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A49LF004
4 Mbit CMOS 3.3Volt-only Firmware Hub Flash Memory Preliminary
Document Title 4 Mbit CMOS 3.3 Volt-only Firmware Hub Flash Memory Revision History
Rev. No.
0.0
History
Initial issue
Issue Date
November 21, 2003
Remark
Preliminary
PRELIMINARY
(November, 2003, Version 0.0)
AMIC Technology, Corp.
A49LF004
4 Mbit CMOS 3.3Volt-only Firmware Hub Flash Memory Preliminary
FEATURES
* Single Power Supply Operation Low voltage range: 3.0 V - 3.6 V for Read and Write Operations * Standard Intel Firmware Hub Interface Read compatible to Intel(R) 82802 Firmware Hub devices * Memory Configuration 512K x 8 (4 Mbit) * Block Architecture 4Mbit: eight uniform 64KByte blocks Supports full chip erase for Address/Address Multiplexed (A/A Mux) mode * Automatic Erase and Program Operation Embedded Byte Program and Block/Chip Erase algorithms Typical 10 s/byte programming time Typical 1s block erase time * Two Operational Modes Firmware Hub Interface (FWH) Mode for in-system operation Address/Address Multiplexed (A/A Mux) Interface Mode for programming equipment * Firmware Hub (FWH) Mode 33 MHz synchronous operation with PCI bus 5-signal communication interface for in-system read and write operations Standard SDP Command Set Data# Polling (I/O7) and Toggle Bit (I/O6) features Block Locking Register for all blocks 4 ID pins for multi-chip selection 5 GPI pins for General Purpose Input Register TBL# pin for hardware write protection to Boot Block WP# pin for hardware write protection to whole memory array except Boot Block
* Address/Address Multiplexed (A/A Mux) Mode 11-pin multiplexed address and 8-pin data I/O interface Supports fast programming on EPROM programmers Standard SDP Command Set Data# Polling (I/O7) and Toggle Bit (I/O6) features * Lower Power Consumption Typical 12mA active read current Typical 24mA program/erase current * High Product Endurance Guarantee 100,000 program/erase cycles for each block Minimum 20 years data retention * Compatible Pin-out and Packaging 32-pin (8 mm x 14 mm) TSOP (TYPE I) 32-pin PLCC
GENERAL DESCRIPTION
The A49LF004 flash memory device is designed to be readcompatible with the Intel 82802 Firmware Hub (FWH) device for PC-BIOS application. This device is designed to use a single low voltage, range from 3.0 Volt to 3.6 Volt power supply to perform in-system or off-system read and write operations. It provides protection for the storage and update of code and data in addition to adding system design flexibility through five general-purpose inputs. Two interface modes are supported by the A49LF004: Firmware Hub (FWH) Interface mode for In-System programming and Address/Address Multiplexed (A/A Mux) mode for fast factory programming of PC-BIOS applications. The memory is divided into eight uniform 64Kbyte blocks that can be erased independently without affecting the data in other blocks. Blocks also can be protected individually to prevent accidental Program or Erase commands from modifying the memory. The Program and Erase operations are executed by issuing the Program/Erase commands into the command interface by which activating the internal control logic to automatically process the Program/Erase procedures. The device can be programmed on a byte-bybyte basis after performing the Erase operation. In addition to the Block Erase operation, the Chip Erase feature is provided in A/A Mux mode that allows the whole memory to be erased in one single Erase operation. The A49LF004 provides the status detection such as Data# Polling and Toggle Bit Functions in both FWH and A/A Mux modes. The process or completion of Program and Erase operations can be detected by reading the status bits. The A49LF004 is offered in 32-lead TSOP and 32-lead PLCC packages. See Figures 1 and 2 for pin assignments and Table 1 for pin descriptions.
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PIN CONFIGURATIONS
RST# (RST#)
A9 (FGPI3)
4
3
2
1
32
31
A7 (FGPI1) A6 (FGPI0) A5 (WP#) A4 (TBL#) A3 (ID3) A2 (ID2) A1 (ID1) A0 (ID0) I/O0 (FWH0)
5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20
30
A10 (FGPI4)
R/C# (CLK)
VDD (VDD)
A8 (FGPI2)
NC
29 28 27
IC (IC) VSS (VSS) NC NC VDD (VDD) OE# (INIT#) WE# (FWH4) RB# (RES) I/O7 (RES)
32-lead PLCC Top View
26 25 24 23 22 21
I/O 1 (FWH1)
I/O 2 (FWH2)
I/O 3 (FWH3)
VSS (VSS)
I/O 4 (RES)
I/O 5 (RES)
(*) Designates FWH Mode
FIGURE 1: Pin Assignments for 32-Lead PLCC
I/O 6 (RES)
NC NC NC VSS (VSS) IC (IC) A10 (FGPI4) R/C# (CLK) VDD (VDD) NC RST# (RST#) A9 (FGPI3) A8 (FGPI2) A7 (FGPI1) A6 (FGPI0) A5 (WP#) A4 (TBL#)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 (*) Designates FWH Mode
32-lead TSOP (8MM X 14MM) Top View
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
OE# (INIT#) WE# (FWH4) VDD (VDD) I/O7 (RES) I/O6 (RES) I/O5 (RES) I/O4 (RES) I/O3 (FWH3) VSS (VSS) I/O2 (FWH2) I/O1 (FWH1) I/O0 (FWH0) A0 (ID0) A1 (ID1) A2 (ID2) A3 (ID3)
FIGURE 2: Pin Assignments for 32-Lead TSOP
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BLOCK DIAGRAM
FWH[3:0] CLK FWH4 ID[3:0] FGPI[4:0] A[10:0] I/O7 ~ I/O0 WE# OE# R/C# IC RST# RB# Y-Decoder
Address Latch
FWH Mode Interface
Control Logic
Input/Output Buffers
A/A Mux Mode Interface High Voltage Generator Data Latch
Y-Gating
X-decoder
Cell Matrix
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Table 1: Pin Description
Interface Symbol Pin Name Type A/A Mux X X X X FWH Descriptions Inputs for addresses during Read and Write operations in A/A Mux mode. Row and column addresses are latched by R/C# pin. To output data during Read cycle and receive input data during Write cycle in A/A Mux mode. The outputs are in tri-state when OE# is high. To control the data output buffers. To control the Write operations. To determine which interface is operational. When held high, A/A Mux mode is enabled and when held low, FWH mode is enabled. This pin must be setup at power-up or before return from reset and not change during device operation. This pin is internally pulled down with a resistor between 20-100 K. This is the second reset pin for in-system use. INIT# and RST# pins are internally combined and initialize a device reset when driven low. These four pins are part of the mechanism that allows multiple FWH devices to be attached to the same bus. To identify the component, the correct strapping of these pins must be set. The boot device must have ID[3:0]=0000 and it is recommended that all subsequent devices should use sequential up-count strapping. These pins are internally pulled down with a resistor between 20-100 K. These individual inputs can be used for additional board flexibility. The state of these pins can be read immediately at boot, through FWH internal registers. These inputs should be at their desired state before the start of the PCI clock cycle during which the read is attempted, and should remain in place until the end of the Read cycle. Unused FGPI pins must not be floated. To prevent any write operations to the Boot Block when driven low, regardless of the state of the block lock registers. When TBL# is high it disables hardware write protection for the top Boot Block. This pin cannot be left unconnected. I/O Communications in FWH mode. To provide a clock input to the device. This pin is the same as that for the PCI clock and adheres to the PCI specifications. Input communication in FWH mode. To reset the operation of the device When low, prevents any write operations to all but the highest addressable block. When WP# is high it disables hardware write protection for these blocks. This pin cannot be left unconnected. This pin determines whether the address pins are pointing to the row addresses or the column addresses in A/A Mux mode. To determine if the device is busy in write operations. Valid only in A/A Mux mode. X PWR PWR X X X X X X Reserved. These pins must be left unconnected. To provide power supply (3.0-3.6Volt). Circuit ground. All VSS pins must be grounded. Unconnected pins.
A10-A0 I/O7-I/O0 OE# WE#
Address Data Output Enable Write Enable Interface Configuration Pin
IN I/O IN IN
IC
IN
X
X
INIT#
Initialize
IN
X
ID[3:0]
Identification Inputs
IN
X
FGPI[4:0]
General Purpose Inputs
IN
X
TBL# FWH[3:0] CLK FWH4 RST# WP# R/C# RB# RES VDD VSS NC
Top Block Lock FWH I/Os Clock FWH Input Reset Write Protect Row/Column Select Ready/Busy# Reserved Power Supply Ground No Connection
IN I/O IN IN IN IN IN OUT X X X
X X X X X X
1. IN=Input, OUT=output, I/O=Input/Output, PWR=Power
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ABSOLUTE MAXIMUM RATINGS*
Temperature Under Bias . . . . . . . . . . . . . -55C to + 125C Storage Temperature . . . . . . . . . . . . . . . . . -65C to + 125C D.C. Voltage on Any Pins with Respect to Ground (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD + 0.5V Package Power Dissipation Capability (Ta=25C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD + 0.5V (2) Output Short Circuit Current . . . . . . . . . . . . . . . . 50mA
*Comments
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to this device. These are stress ratings only. Functional operation of this device at these or any other conditions above those indicated in the operational sections of these specifications are not implied or intended. Exposure to the absolute maximum rating conditions for extended periods may affect device reliability.
Operating Ranges
Commercial (C) Devices Ambient Temperature (TA) . . . . . . . . . . . . . . 0C to +85C VDD Supply Voltages VDD for all devices . . . . . . . . . . . . . . . . . . +3.0V to +3.6V Operating ranges define those limits between which the functionally of the device is guaranteed. when FWH4 is high and no internal operation is in progress. The device is in ready mode when FWH4 is low and no activity is on the FWH bus.
Notes:
1. Minimum DC voltage on input or I/O pins is -0.5V. During voltage transitions, input or I/O pins may undershoot VSS to 2.0V for periods of up to 20ns. Maximum DC voltage on input and I/O pins is VDD + 0.5V. During voltage transitions, input or I/O pins may overshoot to VDD + 2.0V for periods up to 20ns. 2. No more than one output is shorted at a time. Duration of the short circuit should not be greater than one second.
MODE SELECTION
The A49LF004 flash memory devices can operate in two distinct interface modes: the Firmware Hub Interface (FWH) mode and the Address/Address Multiplexed (A/A Mux) mode. The IC (Interface Configuration pin) is used to set the interface mode selection. If the IC pin is set to logic High, the device is in A/A Mux mode; while if the IC pin is set Low, the device is in the FWH mode. The IC selection pin must be configured prior to device operation. The IC pin is internally pulled down if the pin is not connected. In FWH mode, the device is configured to interface with its host using Intel's Firmware Hub proprietary protocol. Communication between Host and the A49LF004 occurs via the 4-bit I/O communication signals, FWH [3:0] and the FWH4. In A/A Mux mode, the device is programmed via an 11-bit address A10-A0 and an 8-bit data I/O7-I/O0 parallel signals. The address inputs are multiplexed in row and column selected by control signal R/C# pin. The column addresses are mapped to the higher internal addresses, and the row addresses are mapped to the lower internal addresses. See the Device Memory Maps in Figure 3 for address assignment.
FWH Read Operation
FWH Read operations read from the memory cells or specific registers in the FWH device. A valid FWH Read operation starts when FWH4 is Low as CLK rises and a START value "1101b" is on FWH[3:0]. Addresses and data are transferred to and from the device decided by a series of "fields". Field sequences and contents are strictly defined for FWH Read operations. Refer to Table 2 for FWH Read Cycle Definition.
FWH Write Operation
FWH Write operations write to the FWH Interface or FWH registers. A valid FWH Write operation starts when FWH4 is Low as CLK rises and a START value "1110b" is on FWH[3:0]. Addresses and data are transferred to and from the device decided by a series of "fields". Field sequences and contents are strictly defined for FWH Write operations. Refer to Table 3 for FWH write Cycle Definition.
FWH Abort Operation
If FWH4 is driven low for one or more clock cycles during a FWH cycle, the cycle will be terminated and the device will wait for the ABORT command. The host may drive the FWH[3:0] with `1111b' (ABORT command) to return the device to Ready mode. If abort occurs during a Write operation, the data may be incorrectly altered.
FWH MODE OPERATION
The FWH interface consists of four data signals (FWH[3:0]), one control signal (FWH4) and a clock (CLK). The data signals, control signal and clock comply with PCI specifications. Operations such as Memory Read and Memory Write use Intel FWH propriety protocol. JEDEC Standard SDP (Software Data Protection) Byte-Program and Block-Erase command sequences are incorporated into the FWH memory cycles. Chip-Erase command is only available in A/A Mux mode. The addresses and data are transferred through FWH[3:0] synchronized with the input clock CLK during a FWH memory cycle. The pulse of FWH4 is inserted for at least one clock period to indicate the start of a FWH memory cycle. The address or data on FWH[3:0] is latched on the rising edge of CLK. The device enters standby mode
Response To Invalid Fields
During FWH operations, the FWH will not explicitly indicate that it has received invalid field sequences. The response to specific invalid fields or sequences is as follows: Address out of range: The FWH address sequence is 7 fields long (28 bits), but only the last five address fields (20 bits) will be decoded by A49LF004. Address A22 has the special function of directing reads and writes to the flash memory (A22=1) or to the register space (A22=0).
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Table 2: FWH Read Cycle
Clock Cycle Field FWH[3:0] MEMORY I/O Descriptions FWH4 must be active (low) for the part to respond. Only the last start field (before FWH4 transitioning high) should be recognized. The START field contents indicate an FWH read cycle. Indicates which FWH device should respond. If the IDSEL (ID select) field matches the value ID[3:0], then that particular device will respond to subsequent commands. These seven clock cycles make up the 28-bit memory address. YYYY is one nibble of the entire address. Addresses are transferred most-significant nibble first. A field of this size indicates how many bytes will be transferred during multibyte operations. In this clock cycle, the master (Intel ICH) has driven the bus to all 1s and then floats the bus, prior to the next clock cycle. This is the first part of the bus "turnaround cycle." The FWH takes control of the bus during this cycle. During the next clock cycle, it will be driven "sync data." During this clock cycle, the FWH will generate a "ready-sync" (RSYNC) indicating that the least-significant nibble of the leastsignificant byte will be available during the next clock cycle. YYYY is the least-significant nibble of the data byte. YYYY is the most-significant nibble of the data byte. In this clock cycle, the A49LF004 has driven the bus to all 1s and then floats the bus prior to the next clock cycle. This is the first part of the bus "turnaround cycle." The master (Intel ICH) resumes control of the bus during this cycle.
1
START
1101
IN
2
IDSEL
0000 to 1111
IN
3-9 10 11 12 13 14 15 16 17
IMADDR IMSIZE TAR0 TAR1 RSYNC DATA DATA TAR0 TAR1
YYYY 0000 (1 byte) 1111 1111 (float) 0000 (READY) YYYY YYYY 1111 1111 (float)
IN IN IN then float Float then OUT OUT OUT OUT OUT then float Float then IN
FWH Single-Byte Read Waveforms
1 CLK 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
FWH4
FWH[3:0]
START
IDSEL
IMADDR
IMSIZE
TAR0
TAR1
RSYNC
DATA
TAR0
TAR1
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Table 3: FWH Write Cycle
Clock Cycle Field FWH[3:0] MEMORY I/O Descriptions FWH4 must be active (low) for the part to respond. Only the last start field (before FWH4 transitioning high) should be recognized. The START field contents indicate an FWH write cycle. Indicates which FWH device should respond. If the IDSEL (ID select) field matches the value ID[3:0], then that particular device will respond to subsequent commands. These seven clock cycles make up the 28-bit memory address. YYYY is one nibble of the entire address. Addresses are transferred most-significant nibble first. A field of this size indicates how many bytes will be transferred during multibyte operations. This field is the least-significant nibble of the data byte. This data is either the data to be programmed into the flash memory or any valid flash command. This field is the most-significant nibble of the data byte. In this clock cycle, the master (Intel ICH) has driven the bus to all 1s then floats the bus, prior to the next clock cycle. This is the first part of the bus "turnaround cycle." The A49LF004 takes control of the bus during this cycle. During the next clock cycle it will be driving the "sync" data. The A49LF004 outputs the values 0000, indicating that it has received data or a flash command. In this clock cycle, the A49LF004 has driven the bus to all ones and then floats the bus prior to the next clock cycle. This is the first part of the bus "turnaround cycle." The master (Intel ICH) resumes control of the bus during this cycle.
1
START
1110
IN
2
IDSEL
0000 to 1111
IN
3-9 10 11 12 13 14 15 16 17
IMADDR IMSIZE DATA DATA TAR0 TAR1 RSYNC TAR0 TAR1
YYYY 0000 (1 byte) YYYY YYYY 1111 1111 (float) 0000 1111 1111 (float)
IN IN IN IN IN then float Float then OUT OUT OUT then float Float then IN
FWH Write Waveforms
1 CLK 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
FWH4
FWH[3:0]
START
IDSEL
IMADDR
IMSIZE
DATA
TAR0
TAR1
RSYNC
TAR0
TAR1
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Invalid IMSIZE field: If the FWH receives an invalid size field during a Read or Write operation, the device will reset and no operation will be attempted. The A49LF004 will not generate any kind of response in this situation. Invalid size fields for a Read/Write cycle are anything but 0000b. detection includes two status bits: Data# Polling (I/O7) and Toggle Bit (I/O6). The End-of-Write detection mode is incorporated into the FWH Read cycle. The actual completion of the nonvolatile write is asynchronous with the system; therefore, either a Data# Polling or Toggle Bit read may be simultaneous with the completion of the Write cycle. If this occurs, the system may possibly get an erroneous result, i.e., valid data may appear to conflict with either I/O7 or I/O6. In order to prevent spurious rejection, if an erroneous result occurs, the software routine should include a loop to read the accessed location an additional two times. If both reads are valid, then the device has completed the Write cycle, otherwise the rejection is valid. Data# Polling (I/O7) When the A49LF004 device is in the internal Program operation, any attempt to read I/O7 will produce the complement of the true data. Once the Program operation is completed, I/O7 will produce true data. Note that even though I/O7 may have valid data immediately following the completion of an internal Write operation, the remaining data outputs may still be invalid: valid data on the entire data bus will appear in subsequent successive Read cycles after an interval of 1 s. During internal Erase operation, any attempt to read I/O7 will produce a `0'. Once the internal Erase operation is completed, I/O7 will produce a `1'. Proper status will not be given using Data# Polling if the address is in the invalid range. Toggle Bit (I/O6) During the internal Program or Erase operation, any consecutive attempts to read I/O6 will produce alternating `0's and `1's, i.e., toggling between 0 and 1. When the internal Program or Erase operation is completed, the toggling will stop.
Device Memory Hardware Write Protection
The Top Boot Lock (TBL#) and Write Protect (WP#) pins are provided for hardware write protection of device memory in the A49LF004. The TBL# pin is used to write protect the top boot block (64 Kbytes) at the highest flash memory address range for the A49LF004. WP# pin write protects the remaining blocks in the flash memory. An active low signal at the TBL# pin prevents Program and Erase operations of the top boot block. When TBL# pin is held high, write protection of the top boot block is then determined by the Boot Block Locking register. The WP# pin serves the same function for the remaining blocks of the device memory. The TBL# and WP# pins write protection functions operate independently of one another. Both TBL# and WP# pins must be set to their required protection states prior to starting a Program or Erase operation. A logic level change occurring at the TBL# or WP# pin during a Program or Erase operation could cause unpredictable results. TBL# and WP# pins cannot be left unconnected. TBL# is internally ORed with the top Boot Block Locking register. When TBL# is low, the top Boot Block is hardware write protected regardless of the state of the Write-Lock bit for the Boot Block Locking register. Clearing the Write-Lock bit in the register when TBL# is low will have no functional effect, even though the register may indicate that the block is no longer locked. WP# is internally ORed with the Block Locking register. When WP# is low, the blocks are hardware write protected regardless of the state of the Write-Lock bit for the corresponding Block Locking registers. Clearing the WriteLock bit in any register when WP# is low will have no functional effect, even though the register may indicate that the block is no longer locked.
Multiple Device Selection
The four ID pins, ID[3:0], allow multiple devices to be attached to the same bus by using different ID strapping in a system. When the A49LF004 is used as a boot device, ID[3:0] must be strapped as 0000, all subsequent devices should use a sequential up-count strapping (i.e. 0001, 0010, 0011, etc.). The A49LF004 will compare the strapping values, if there is a mismatch, the device will ignore the remainder of the cycle and go into standby mode. For further information regarding FWH device mapping and paging, please refer to the Intel 82801(ICH) I/O Controller Hub documentation. Since there is no ID support in A/A Mux mode, to program multiple devices a stand-alone PROM programmer is recommended.
Reset
A VIL on INIT# or RST# pin initiates a device reset. INIT# and RST# pins have the same function internally. It is required to drive INIT# or RST# pins low during a system reset to ensure proper CPU initialization. During a Read operation, driving INIT# or RST# pins low deselects the device and places the output drivers, FWH[3:0], in a highimpedance state. The reset signal must be held low for a minimal duration of time TRSTP. A reset latency will occur if a reset procedure is performed during a Program or Erase operation. See Table 16, Reset Timing Parameters for more information. A device reset during an active Program or Erase will abort the operation and memory contents may become invalid due to data being altered or corrupted from an incomplete Erase or Program operation. In this case, the device can take up to TRSTE to abort a Program or Erase operation.
REGISTERS
There are three types of registers available on the A49LF004, the General Purpose Inputs Register, Block Locking Registers, and the JEDEC ID Registers. These registers appear at their respective address location in the 4 GByte system memory map. Unused register locations will read as 00H. Any attempt to read or write any register during an internal Write operation will be ignored. Refer to Table 4 for the FWH register memory map.
Write Operation Status Detection
The A49LF004 device provides two software means to detect the completion of a Write (Program or Erase) cycle, in order to optimize the system Write cycle time. The software PRELIMINARY (November, 2003, Version 0.0) 8
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Table 4: FWH Register Memory Map
Memory Address FFBF0002h FFBE0002h FFBD0002h FFBC0002h FFBB0002h FFBA0002h FFB90002h FFB80002h FFBC0100h FFBC0000h FFBC0001h FFBC0003h Mnemonic T_BLOCK_LK T_MINUS01_LK T_MINUS02_LK T_MINUS03_LK T_MINUS04_LK T_MINUS05_LK T_MINUS06_LK T_MINUS07_LK FGPI_REG MANUF_REG DEV_REG CONT_REG Register Name Top Block Lock Register (Block 7) Top Block [-1] Lock Register (Block 6) Top Block [-2] Lock Register (Block 5) Top Block [-3] Lock Register (Block 4) Top Block [-4] Lock Register (Block 3) Top Block [-5] Lock Register (Block 2) Top Block [-6] Lock Register (Block 1) Top Block [-7] Lock Register (Block 0) FWH General Purpose Input Register Manufacturer ID Register Device ID Register Continuation ID Register Default 01h 01h 01h 01h 01h 01h 01h 01h N/A 37h 95h 7Fh Type R/W R/W R/W R/W R/W R/W R/W R/W R R R R
General Purpose Inputs Register The GPI_REG (General Purpose Inputs Register) passes the state of FGPI[4:0] pins at power-up on the A49LF004. It is recommended that the FGPI[4:0] pins are in the desired state before FWH4 is brought low for the beginning of the bus cycle, and remain in that state until the end of the cycle. There is no default value since this is a pass-through register. The GPI register for the boot device appears at FFBC0100H in the 4 GByte system memory map, and will appear elsewhere if the device is not the boot device. Register is not available for read when the device is in Erase/Program operation. See Table 5 for the GPI_REG bits and function.
Table 5: General Purpose Inputs Register
Bit 7:5 4 3 2 1 0 Bit Name FGPI[4] FGPI[3] FGPI[2] FGPI[1] FGPI[0] Function Reserved GPI_REG Bit 4 GPI_REG Bit 3 GPI_REG Bit 2 GPI_REG Bit 1 GPI_REG Bit 0 Pin Number 32-PLCC 32-TSOP 30 3 4 5 6 6 11 12 13 14
Write-Lock. The Write-Lock Bit determines whether the contents of the Block can be modified (using the Program or Erase Command). When the Write-Lock Bit is set to `1', the block is write protected; any operations that attempt to change the data in the block will fail and the Status Register will report the error. When the Write-Lock Bit is reset to `0', the block is not write protected through the Locking Register and may be modified unless write protected through some other means. If Top Block Lock, TBL#, is Low, VIL, then the Top Block (Block 7) is write protected and cannot be modified. Similarly, if Write Protect, WP#, is Low, VIL, then the Main Blocks (Blocks 0 to 6) are write protected and cannot be modified. After power-up or reset the Write-Lock Bit is always set to `1' (write protected). Read-Lock. The Read-Lock bit determines whether the contents of the Block can be read (from Read mode). When the Read-Lock Bit is set to `1', the block is read protected; any operation that attempts to read the contents of the block will read 00h instead. When the Read-Lock Bit is reset to `0', read operations in the Block return the data programmed into the block as expected. After power-up or reset the Read-Lock Bit is always reset to `0' (not read protected). Lock-Down. The Lock-Down Bit provides a mechanism for protecting software data from simple hacking and malicious attack. When the Lock-Down Bit is set to `1', further modification to the Write-Lock, Read-Lock and Lock-Down Bits cannot be performed. A reset or power-up is required before changes to these bits can be made. When the LockDown Bit is reset to `0', the Write-Lock, Read-Lock and Lock-Down Bits can be changed.
Block Locking Registers A49LF004 provides software controlled lock protection through a set of Block Locking registers. The Block Locking Registers are read/write registers and it is accessible through standard addressable memory locations specified in Table 6. Unused register locations will read as 00H.
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Table 6: Lock Register Bit Definition
Data 00h 01h 02h 03h 04h 05h 06h 07h Reserved Bit 7:3 00000 00000 00000 00000 00000 00000 00000 00000 Read-Lock Bit 2 0 0 0 0 1 1 1 1 Lock-Down Bit 1 0 0 1 1 0 0 1 1 Write-Lock Bit 0 0 1 0 1 0 1 0 1 Full Access. Write locked. Default state at power-up. Locked open (full access locked down). Write-locked down. Read locked. Read and Write locked. Read-locked down Read- and Write-locked down Function
Data 7:3 2 Reserved Read-Lock 1 = Prevents read operations in the block where set
Function
0 = Normal operation for reads in the block where clear. This is the default state. Lock-Down 1 = Prevents further set or clear operations to the Write-Lock and Read-Lock bits. Lock-Down only can be set 1 but not clear. The block will remain lock-down until reset (with RST# or INIT# being Low), or until the device is power-on reset. 0 = Normal operation for Write-Lock and Read-Lock bit altering in the block where clear. This is the default state. Write-Lock 0 1 = Prevents program or erase operations in the block where set. This is the default state. 0 = Normal operation for programming and erase in the block where clear.
ADDRESS/ADDRESS MULTIPLEXED (A/A MUX) MODE
Device Operation
Commands are used to initiate the memory operation functions of the device. The data portion of the software command sequence is latched on the rising edge of WE#. During the software command sequence the row address is latched on the falling edge of R/C# and the column address is latched on the rising edge of R/C#. Refer to Table 7 and Table 8 for operation modes and the command sequence.
Byte-Program Operation
The A49LF004 device is programmed on a byte-by-byte basis. Before programming, one must ensure that the block, in which the byte which is being programmed exists, is fully erased. The Byte-Program operation is initiated by executing a four-byte command load sequence for Software Data Protection with address and data in the last byte sequence. During the Byte-Program operation, the row address (A10A0) is latched on the falling edge of R/C# and the column Address (A21-A11) is latched on the rising edge of R/C#. The data bus is latched in the rising edge of WE#. See Figure 11 for Program operation timing diagram, Figure 14 for timing waveforms, and Figure 19 for its flowchart. During the Program operation, the only valid reads are Data# Polling and Toggle Bit. During the internal Program operation, the host is free to perform additional tasks. Any commands written during the internal Program operation will be ignored.
Read
The Read operation of the A49LF004 device is controlled by OE#. OE# is the output control and is used to gate data from the output pins. Refer to the Read cycle timing diagram, Figure 10 for further details.
Reset
A VIL on RST# pin initiates a device reset.
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Table 7: A/A Mux Mode Operation Selection
Mode Read Write Standby Output Disable Reset Product Identification RST# VIH VIH VIH VIH VIL VIH OE# VIL VIH VIH VIH X VIL WE# VIH VIL VIH X X VIH Address AIN AIN X X X A21 - A2 = X, A1 = VIL, A0 = VIL A21 - A2 = X, A1 = VIL, A0 = VIH A21 - A2 = X, A1 = VIH, A0 = VIH DOUT DIN High Z High Z High Z Manufacturer ID Device ID Continuation ID I/O
Block-Erase Operation
The Block-Erase Operation allows the system to erase the device in 64 KByte uniform block size for the A49LF004. The Block-Erase operation is initiated by executing a six-byte command load sequence for Software Data Protection with Block-Erase command (30H or 50H) and block address. The internal Block-Erase operation begins after the sixth WE# pulse. The End-of-Erase can be determined using either Data# Polling or Toggle Bit methods. See Figure 15 for timing waveforms. Any commands written during the Block- Erase operation will be ignored.
Chip-Erase
The A49LF004 device provides a Chip-Erase operation only in A/A Mux mode, which allows the user to erase the entire memory array to the `1's state. This is useful when the entire device must be quickly erased. The Chip-Erase operation is initiated by executing a six-byte Software Data Protection command sequence with Chip-Erase command (10H) with address 5555H in the last byte sequence. The internal Erase operation begins with the rising edge of the sixth WE#. During the internal Erase operation, the only valid read is Toggle Bit or Data# Polling. See Table 8 for the command sequence, Figure 16 for timing diagram, and Figure 21 for the flowchart. Any commands written during the Chip-Erase operation will be ignored.
When the A49LF004 device is in the internal Program operation, any attempt to read I/O7 will produce the complement of the true data. Once the Program operation is completed, I/O7 will produce true data. Note that even though I/O7 may have valid data immediately following the completion of an internal Write operation, the remaining data outputs may still be invalid: valid data on the entire data bus will appear in subsequent successive Read cycles after an interval of 1 s. During internal Erase operation, any attempt to read I/O7 will produce a `0'. Once the internal Erase operation is completed, I/O7 will produce a `1'. The Data# Polling is valid after the rising edge of fourth WE# pulse for Program operation. For Block- or ChipErase, the Data# Polling is valid after the rising edge of sixth WE# pulse. See Figure 12 for Data# Polling timing diagram. Proper status will not be given using Data# Polling if the address is in the invalid range.
Data# Polling (I/O7)
Toggle Bit (I/O6)
Write Operation Status Detection
The A49LF004 device provides two software means to detect the completion of a Write (Program or Erase) cycle, in order to optimize the system Write cycle time. The software detection includes two status bits: Data# Polling (I/O7) and Toggle Bit (I/O6). The End-of-Write detection mode is enabled after the rising edge of WE# which initiates the internal Program or Erase operation. The actual completion of the nonvolatile write is asynchronous with the system; therefore, either a Data# Polling or Toggle Bit read may be simultaneous with the completion of the Write cycle. If this occurs, the system may possibly get an erroneous result, i.e., valid data may appear to conflict with either I/O7 or I/O6. In order to prevent spurious rejection, if an erroneous result occurs, the software routine should include a loop to read the accessed location an additional two times. If both reads are valid, then the device has completed the Write cycle, otherwise the rejection is valid. PRELIMINARY (November, 2003, Version 0.0) 11
During the internal Program or Erase operation, any consecutive attempts to read I/O6 will produce alternating `0's and `1's, i.e., toggling between 0 and 1. When the internal Program or Erase operation is completed, the toggling will stop. The device is then ready for the next operation. The Toggle Bit is valid after the rising edge of fourth WE# pulse for Program operation. For Block- or Chip-Erase, the Toggle Bit is valid after the rising edge of sixth WE# pulse. See Figure 13 for Toggle Bit timing diagram.
Data Protection
The A49LF004 device provides both hardware and software features to protect nonvolatile data from inadvertent writes.
Hardware Data Protection
Noise/Glitch Protection: A WE# pulse of less than 5 ns will not initiate a Write cycle. VDD Power Up/Down Detection: The Write operation is inhibited when VDD is less than 1.5V. Write Inhibit Mode: Forcing OE# low, WE# high will inhibit the Write operation. This prevents inadvertent writes during powerup or power-down.
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A49LF004
Software Data Protection (SDP)
The A49LF004 provides the JEDEC approved Software Data Protection scheme for all data alteration operation, i.e., Program and Erase. Any Program operation requires the inclusion of a series of three-byte sequences. The three-byte load sequence is used to initiate the Program operation, providing optimal protection from inadvertent Write operations, e.g., during the system power-up or power-down. Any Erase operation requires the inclusion of a six-byte load sequence. The A49LF004 device is shipped with the Software Data Protection permanently enabled. See Table 8 for the specific software command codes. During SDP command sequence, invalid commands will abort the device to Read mode, within TRC.
Electrical Specifications
The AC and DC specifications for the FWH Interface signals (FWH[3:0], CLK, FWH4, and RST#) as defined in Section 4.2.2 of the PCI Local Bus Specification, Rev. 2.1. Refer to Table 9 for the DC voltage and current specifications. Refer to the specifications on Table 10 to Table 19 for Clock, Read/Write, and Reset operations.
Product Identification
The product identification mode identifies the Manufacturer ID, Continuation ID, and Device ID of the A49LF004. See Table 7 for detail information.
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Figure 3: System Memory Map and Device Memory Map for A49LF004
System Memory (Top 4M Bytes) FFFFFFFFh
A49LF004 Block 7 (64K Bytes) Block 6 (64K Bytes) Block 5 (64K Bytes) Block 4 (64K Bytes) Block 3 (64K Bytes) Block 2 (64K Bytes) Block 1 (64K Bytes) Block 0 (64K Bytes)
Device Memory 07FFFF TBL# 070000 06FFFF 060000 05FFFF 050000 04FFFF 040000 03FFFF 030000 02FFFF 020000 01FFFF 010000 00FFFF 000000
WP# for Block 6 ~ 0
FFF80000h
Range for Additional FWH Devices
FFC0000h
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Table 8: Software Data Protection Command Definition
Command Bus Cycles 6 6 4 3 1 3 1 Cycle Addr
(2) st (1)
2
nd
Cycle Data 55H 55H 55H 55H
3 Cycle Addr 5555H 5555H 5555H 5555H Data 80H 80H A0H 90H
rd
4 Cycle Addr 5555H 5555H PA
(6)
th
5 Cycle Addr 2AAAH 2AAAH Data 55H 55H
th
6 Cycle Addr BA
(4)
th
Data AAH AAH AAH AAH F0H AAH
Addr 2AAAH 2AAAH 2AAAH 2AAAH
Data AAH AAH PD
(6)
Data 30H/50H 10H
(5)
Block Erase Chip Erase
(3)
5555H 5555H 5555H 5555H XXXX 5555H
5555H
Byte Program Product ID Entry Product ID Exit Product ID Exit
(7) (7)
2AAAH
55H
5555H
F0H
Notes: 1. FWH Mode uses consecutive Write cycles to complete a command sequence; A/A Mux Mode uses consecutive bus cycles to complete a command sequence. 2. Addresses A14 - A0 are used for SDP command decoding; A21 - A15 can be VIL or VIH but no other value for the command sequence in A/A Mux Mode. 3. Chip erase is available in A/A Mux Mode only. 4. BA: Block Erase Address. 5. Either 30H or 50H are acceptable for Block Erase. 6. PA: Program Byte Address; PD: Byte data to be programmed. 7. Both Product ID Exit commands are equivalent.
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Operating Range AC Conditions of Test Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . 3ns Output Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . CL = 30pF
Range Commercial
Ambient Temperature 0C to +85C
VDD 3.0-3.6V
Table 9: DC Operating Characteristics (All Interfaces)
Limits Symbol Parameter Min Active VDD Current: IDD Read Active VDD Current: Write ISB
(2) (1)
Test Conditions Max 12 24 100 10 100 1 1 1.0 -0.5 0.5VDD -0.5 VDD+0.5 0.4 VDD+0.5 0.3VDD 0.1VDD 0.9VDD Units mA mA A mA A A A V V V V V V Address Input=VIL/VIH, at F=1/TRCMin, VDD=VDDMax(A/A Mux Mode) OE#=VIH, WE#=VIH FWH4=0.9VDD,f=33MHz,VDD=VDDMax, All other inputs 0.9VDD or 0.1VDD FWH4=VIL,f=33MHz,VDD=VDDMax, All other inputs 0.9VDD or 0.1VDD VIN=GND to VDD, VDD=VDDMax VIN=GND to VDD, VDD=VDDMax VOUT=GND to VDD, VDD=VDDMax VDD=VDDMax VDD=VDDMin VDD=VDDMax VDD=VDDMin IOL=1500A, VDD=VDDMin IOH=-500A, VDD=VDDMin
Standby VDD Current (FWH Mode) Ready Mode VDD Current (FWH Mode) Input Current for IC and ID[3:0] Pins Input Leakage Current Output Leakage Current INIT# Input High Voltage INIT# Input Low Voltage Input High Voltage Input Low Voltage Output Low Voltage Output High Voltage
IRY
II ILI ILO VIHI VILI
(3) (3)
VIH VIL VOL VOH
Notes: 1. IDD active while Erase or Program is in progress. 2. The device is in Ready Mode when no activity is on the FWH bus. 3. Do not violate processor or chipset specification regarding INIT# voltage.
Table 10: Recommended System Power-Up Timings
Symbol TPU-READ T
(1)
Parameter Power-up to Read Operation Power-up to Write Operation
Min 100 100
Units s s
(1) PU-WRITE
Notes: 1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
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Table 11: Pin Impedance (VDD=3.3V, Ta=25C, f=1MHz, other pins open)
Parameter CI/O CIN LPIN
(1) (1) (2)
Description I/O Pin Capacitance Input Capacitance Pin Inductance
Test Condition VI/O = 0V VIN = 0V
Max 12pF 12pF 20nH
Notes: 1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter. 2. Refer to PCI specifications.
Table 12: Clock Timing Parameters
Symbol TCYC THIGH TLOW Parameter CLK Cycle Time CLK High Time CLK Low Time CLK Slew Rate (peak-to-peak) Min 30 11 11 1 4 Max Units ns ns ns V/ns
Figure 4: CLK Waveform
TCYC THIGH 0.6 VDD 0.5 VDD 0.4 VDD 0.3 VDD 0.2 VDD 0.4 VDD Peak-to-Peak (Min) TLOW
Table 13: FWH Mode Read/Write Cycle Timing Parameters, VDD=3.0-3.6V
Symbol TSU TDH TVAL TON TOFF Parameter Input Set Up Time to CLK Rising CLK Rising to Data Hold Time CLK Rising to Data Valid CLK Rising to Active (Float to Active Delay) CLK Rising to Inactive (Active to Float Delay) Min 7 0 2 2 28 11 Max Units ns ns ns ns ns
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Table 14: FWH Mode Interface Measurement Condition Parameters
Symbol VTH VTL VTEST VMAX Input Signal Edge Rate Value 0.6 VDD 0.2 VDD 0.4 VDD 0.4 VDD 1V/ns Units V V V V
Figure 5: Input Timing Parameters
VTH CLK VTEST VTL TSU TDH FWH[3:0] (Valid Input Data) Valid Inputs VMAX
Figure 6: Output Timing Parameters
VTH CLK VTEST VTL TVAL FWH[3:0] (Valid Output Data)
FWH[3:0] (Float Output Data) TON TOFF
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Table 15: FWH Mode Interface AC Input/Output Characteristics
Symbol Parameter Test Conditions 0 < VOUT 0.3VDD IOH (AC) Switching Current High 0.3VDD < VOUT 0.9VDD 0.7VDD < VOUT VDD (Test Point) VOUT = 0.7VDD VDD > VOUT 0.6VDD IOL (AC) Switching Current Low 0.6VDD > VOUT > 0.1VDD 0.18VDD > VOUT > 0 (Test Point) ICL ICH slewr slewf Low Clamp Current High Clamp Current Output Rise Slew Rate Output Fall Slew Rate VOUT=0.18VDD -3 < VIN -1 VDD+4 > VIN > VDD+1 0.2VDD-0.6VDD load 0.6VDD-0.2VDD load -25+(VIN+1)/0.015 25+(VIN-VDD-1)/0.015 1 1 4 4 16VDD 26.7VOUT Equation D 38VDD Min -12 VDD -17.1(VDD-VOUT) Equation C -32 VDD Max Units mA mA mA mA mA mA mA mA mA mA V/ns V/ns
Notes: 1. See PCI specification. 2. PCI specification output load is used.
Table 16: FWH Mode Interface Reset Timing Parameters, VDD=3.0-3.6V
Symbol TPRST TKRST TRSTP TRSTF TRST
(1)
Parameter VDD Stable to Reset Low Clock Stable to Reset Low RST# Pulse Width RST# Low to Output Float RST# High to FWH4 Low RST# Low to Reset During Erase or Program RST# or INIT# Slew Rate
Min 1 100 100
Max
Units ms s ns
48 1 10 50
ns s s mV/ns
TRSTE
Notes: 1. There will be a latency of TRSTE if a reset procedure is performed during a Program or Erase operation.
Figure 7: Reset Timing Diagram
VDD CLK TKRST RST#/INIT# TRSTF FWH[3:0] TRSTE TRST
Program or Erase Operation Aborted
TPRST
TRSTP
FWH4
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Figure 8: A/A Mux Mode AC Input/Output Reference Waveforms
VIHT INPUT VILT AC test inputs are driven at VIHT (0.9VDD) for a logic HIGH and VILT (0.1VDD) for a logic LOW. Measurement reference points for inputs and outputs are VIT (0.5VDD) and VOT (0.5VDD). Input rise and fall times (10% <-> 90%) are < 5ns Note: V IT: VINPUT Test V OT: VOUTPUT Test V IHT: VINPUT HIGH Test V ILT: VINPUT LOW Test VIT Reference Points VOT OUTPUT
Figure 9: A/A Mux Mode Test Load Condition
TO TESTER
TO DUT CL=30pF
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A/A MUX MODE AC CHARACTERISTICS Table 17: Read Cycle Timing Parameters VDD=3.0-3.6V
Symbol TRC TRST TAS TAH TAA TOE TOLZ TOHZ TOH Parameter Read Cycle Time RST# High to Row Address Setup R/C# Address Set-up Time R/C# Address Hold Time Address Access Time Output Enable Access Time OE# Low to Active Output OE# High to High-Z Output Output Hold from Address Change 0 0 35 Min 270 1 45 45 120 60 Max Units ns s ns ns ns ns ns ns ns
Table 18: Program/Erase Cycle Timing Parameters, VDD=3.0-3.6V
Symbol TRST TAS TAH TCWH TOES TOEH TOEP TOET TWP TWPH TDS TDH TIDA TBP TBE TSCE Parameter RST# High to Row Address Setup R/C# Address Setup Time R/C# Address Hold Time R/C# to Write Enable High Time OE# High Setup Time OE# High Hold Time OE# to Data# Polling Delay OE# to Toggle Bit Delay WE# Pulse Width WE# Pulse Width High Data Setup Time Data Hold Time Product ID Access and Exit Time Byte Programming Time Block Erase Time Chip Erase Time 100 100 50 5 150 300 8 10 Min 1 50 50 50 20 20 40 40 Max Units s ns ns ns ns ns ns ns ns ns ns ns ns s s s
Table 19: Reset Timing Parameters, VDD=3.0-3.6V
Symbol TPRST TRSTP TRSTF TRST
(1)
Parameter VDD Stable to Reset Low RST# Pulse Width RST# Low to Output Float RST# High to FWH4 Low RST# Low to Reset During Erase or Program
Min 1 100
Max
Units ms ns
48 1 10
ns s s
TRSTE
1. There will be a reset latency of TRSTE if a reset procedure is performed during a Program or Erase operation.
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Figure 10: A/A Mux Mode Read Cycle Timing Diagram
TRSTP RST#
TRST
Row Address
TRC
Column Address Row Address Column Address
Address
TAS R/C# VIH
TAH
TAS
TAH
WE#
TAA
TOH
OE# TOE High-Z TOLZ
Data Valid
TOHZ High-Z
I/O7-I/O0
Figure 11: A/A Mux Mode Write Cycle Timing Diagram
TRSTP RST#
TRST
Row Address Column Address
Address
TAS R/C#
TAH
TAS
TAH
TCWH OE# TOES TWP
TOEH TWPH
WE# TDS I/O7-I/O0 High-Z
Data Valid
TDH
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Figure 12: A/A Mux Mode Data# Polling Timing Diagram
Address
Row Address Column Address Row Address Column Address Row Address Column Address Row Address Column Address
R/C#
WE# TOEP OE# High-Z
I/O7
Data In
Data#
Data#
Data
Final Input Command
Status Bit
Status Bit
Data
Command Input
Write Operation In Progress
Write Operation Complete
Figure 13: A/A Mux Mode Toggle Bit Timing Diagram
Address
Row Address Column Address Row Address Column Address Row Address Column Address Row Address Column Address
R/C#
WE# TOET OE# High-Z
I/O6
Data In
Data
Final Input Command
Status Bit
Status Bit
Data
Command Input
Write Operation In Progress
Write Operation Complete
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Figure 14: A/A Mux Mode Byte Program Timing Diagram
Four-Byte Byte Program Command Sequence 5555 Address 2AAA 5555 PA
R/C#
OE#
TWP
TWPH
TBP
WE# High-Z
AA 55 A0 PD
I/O7-I/O0
Byte Program Command Input PA = Byte Program Address PD = Byte Program Data
Byte Program Operation In Progress
Figure 15: A/A Mux Mode Block Erase Timing Diagram
Six-Byte Block Erase Command Sequence 5555 Address 2AAA 5555 5555 2AAA BA
R/C#
OE#
TWP TWPH
TBE
WE# High-Z
AA 55 80 AA 55 30/50
I/O7-I/O0
Block Erase Command Input BA = Block Address
Block Erase Operation In Progress
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Figure 16: A/A Mux Mode Chip Erase Timing Diagram
Six-Byte Chip Erase Command Sequence 5555 Address 2AAA 5555 5555 2AAA 5555
R/C#
OE#
TWP TWPH
TSCE
WE# High-Z
AA 55 80 AA 55 10
I/O7-I/O0
Chip Erase Command Input
Chip Erase Operation In Progress
Figure 17: A/A Mux Mode Product ID Entry and Read Timing Diagram
Three-Byte Product ID Entry Command Sequence 5555 Address 2AAA 5555 0000 0001 0003
R/C#
OE#
TWP TWPH
TIDA
WE# High-Z
AA 55 90 37
TAA
95 7F
I/O7-I/O0
Figure 18: A/A Mux Mode Product ID Exit and Reset Timing Diagram
Three-Byte Product ID Exit and Reset Command Sequence 5555 Address 2AAA 5555
R/C#
OE#
TWP TWPH
WE# High-Z
AA 55 F0
I/O7-I/O0
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Figure 19: Automatic Byte Program Algorithm
Start
Write Command Address: 5555H Data: AAH
Write Command Address: 2AAAH Data: 55H
Write Command Address: 5555H Data: A0H
Write Command Address: PA Data: PD
NO
I/O7 = Data ? Or I/O6 Stop Toggle?
YES
Byte Program Completed
PA: Byte Program Address PD: Byte Program Data
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Figure 20: Automatic Block Erase Algorithm
Start
Write Command Address: 5555H Data: AAH
Write Command Address: 2AAAH Data: 55H
Write Command Address: 5555H Data: 80H
Write Command Address: 5555H Data: AAH
NO
Write Command Address: 2AAAH Data: 55H
I/O7 = Data ? Or I/O6 Stop Toggle?
YES
Write Command Address: BA Data: 30H or 50H
Block Erase Completed
BA: Block Address
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Figure 21: Automatic Chip Erase Algorithm
Start
Write Command Address: 5555H Data: AAH
Write Command Address: 2AAAH Data: 55H
Write Command Address: 5555H Data: 80H
Write Command Address: 5555H Data: AAH
NO
Write Command Address: 2AAAH Data: 55H
I/O7 = Data ? Or I/O6 Stop Toggle?
YES
Write Command Address: 5555H Data: 10H
Chip Erase Completed
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Figure 22: Product ID Command Flowchart
Start
Start
OR
Write Command Address: 5555H Data: AAH
Write Command Address: 5555H Data: AAH
Write Command Address: 2AAAH Data: 55H
Write Command Address: 2AAAH Data: 55H
Write Command Address: 5555H Data: 90H
Write Command Address: 5555H Data: F0H
Write Command Address: XXXXH Data: F0H
Enter Product ID Mode
Exit Product ID Mode
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Ordering Information
A49LF004T x - 33 C
Temperature Range
C = Commercial (0C to +85C)
Clock Frequency
33 = 33MHz
Package Type
L = PLCC X = TSOP (8mmX14mm)
Device Number
4 Mbit FWH Flash Memory
Part No.
Clock Frequency (MHz)
33 33
Boot Block Location
Top Top
Temperature Range
0C to +85C 0C to +85C
Package Type
A49LF004TL-33
32-pin PLCC 32-pin TSOP (8mm X 14 mm)
A49LF004TX-33
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Package Information PLCC 32L Outline Dimension
HD D 13 5
unit: inches/mm
14
4
32
20
30
21
29
A2
A
HE
1
E
b1 GD y D
A1
e
b
GE
Dimensions in inches
Dimensions in mm Min 0.47 2.67 0.66 0.41 0.20 13.89 11.35 1.12 12.45 9.91 14.86 12.32 1.91 0 Nom 2.80 0.71 0.46 0.254 13.97 11.43 1.27 12.95 10.41 14.99 12.45 2.29 Max 3.40 2.93 0.81 0.54 0.35 14.05 11.51 1.42 13.46 10.92 15.11 12.57 2.41 0.075 10
Symbol
A A1 A2 b1 b C D E e GD GE HD HE L y
Min 0.0185 0.105 0.026 0.016 0.008 0.547 0.447 0.044 0.490 0.390 0.585 0.485 0.075 0
Nom 0.110 0.028 0.018 0.010 0.550 0.450 0.050 0.510 0.410 0.590 0.490 0.090 -
Max 0.134 0.115 0.032 0.021 0.014 0.553 0.453 0.056 0.530 0.430 0.595 0.495 0.095 0.003 10
Notes: 1. Dimensions D and E do not include resin fins. 2. Dimensions GD & GE are for PC Board surface mount pad pitch design reference only.
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L
c
A49LF004
Package Information
TSOP 32L TYPE I (8 X 14mm) Outline Dimensions unit: inches/mm
Pin1
0.254 Gage Plane L Detail "A"
A2
E
D1 D Detail "A"
A1
c
e
b y D
Dimensions in inches Symbol A A1 A2 b c E e D D1 L y Min 0.002 0.037 0.0067 0.004 0.311 0.543 0.484 0.020 0.000 0 Nom 0.039 0.0087 0.315 0.0197 0.551 0.488 0.024 3 Max 0.047 0.006 0.041 0.0106 0.0083 0.319 0.559 0.492 0.028 0.003 5
Dimensions in mm Min 0.05 0.95 0.17 0.10 7.90 13.80 12.30 0.50 0.00 0 Nom 1.00 0.22 8.00 0.50 14.00 12.40 0.60 3 Max 1.20 0.15 1.05 0.27 0.21 8.10 14.20 12.50 0.70 0.076 5
Notes: 1. Dimension E does not include mold flash. 2. Dimension D1 does not include interlead flash. 2. Dimension b does not include dambar protrusion.
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