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CY62126BV
64K x 16 Static RAM
Features
* 2.7V-3.6V operation * CMOS for optimum speed/power * Low active power (70 ns, LL version) -- 54 mW (max.) (15 mA) * Low standby power (70 ns, LL version) -- 54 W (max.) (15 A) * Automatic power-down when deselected * Independent control of Upper and Lower Bytes * Available in 44-pin TSOP II (forward) and fBGA (BLE) is LOW, then data from I/O pins (I/O 1 through I/O8), is written into the location specified on the address pins (A0 through A15). If Byte High Enable (BHE) is LOW, then data from I/O pins (I/O 9 through I/O16) is written into the location specified on the address pins (A0 through A15). Reading from the device is accomplished by taking Chip Enable (CE) and Output Enable (OE) LOW while forcing the write enable (WE) HIGH. If Byte Low Enable (BLE) is LOW, then data from the memory location specified by the address pins will appear on I/O1 to I/O 8. If Byte High Enable (BHE) is LOW, then data from memory will appear on I/O 9 to I/O16. See the truth table at the back of this data sheet for a complete description of read and write modes. The input/output pins (I/O 1 through I/O16) are placed in a high-impedance state when the device is deselected (CE HIGH), the outputs are disabled (OE HIGH), the BHE and BLE are disabled (BHE, BLE HIGH), or during a write operation (CE LOW, and WE LOW). The CY62126BV is available in standard 44-pin TSOP Type II (forward pinout) and fBGA packages.
Functional Description
The CY62126BV is a high-performance CMOS static RAM organized as 65,536 words by 16 bits. This device has an automatic power-down feature that significantly reduces power consumption by 99% when deselected. The device enters power-down mode when CE is HIGH. Writing to the device is accomplished by taking Chip Enable (CE) and Write Enable (WE) inputs LOW. If Byte Low Enable
Logic Block Diagram
Pin Configurations
TSOP II (Forward) Top View A4 A3 A2 A1 A0 CE I/O1 I/O2 I/O3 I/O4 VCC VSS I/O5 I/O6 I/O7 I/O8 WE A15 A14 A13 A12 NC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23
DATA IN DRIVERS A12 A11 A10 A9 A7 A6 A3 A2 A1 A0
64K x 16 RAM Array 1024 X 1024
I/O1 - I/O8 I/O9 - I/O16
COLUMN DECODER
BHE WE CE OE BLE
62126BV-1
A5 A6 A7 OE BHE BLE I/O16 I/O15 I/O14 I/O13 VSS VCC I/O12 I/O11 I/O10 I/O9 NC A8 A9 A10 A11 NC
ROW DECODER
A4 A5 A8 A13 A14 A15
SENSE AMPS
62126BV-2
Cypress Semiconductor Corporation
*
3901 North First Street
*
San Jose
*
CA 95134
*
408-943-2600 June 14, 2000
CY62126BV
Pin Configurations (continued)
fBGA 1 BLE I/O9 2 OE BHE 3 A0 A3 A5 4 A1 A4 A6 A7 NC A15 A13 A10 5 A2 CE I/O 2 I/O 4 I/O5 I/O 6 WE A11 6 NC I/O 1 I/O 3 VCC VSS I/O 7 I/O 8 NC A B C D E F G H
62126BV-3
I/O10 I/O11 VSS VCC
I/O12 NC I/O13 NC A14 A12 A9
I/O15 I/O14 I/O 16 NC NC A8
Selection Guide
CY62126BV-55 Maximum Access Time Maximum Operating Current Maximum CMOS Standby Current 55 20 15 CY62126BV-70 70 15 15 Units ns mA A
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................. -65C to +150C Ambient Temperature with Power Applied ............................................. -55C to +125C Supply Voltage on VCC to Relative GND[1] .... -0.5V to +4.6V DC Voltage Applied to Outputs in High Z State[1] .....................................-0.5V to VCC +0.5V DC Input Voltage[1]..................................-0.5V to VCC +0.5V
Notes: 1. VIL (min.) = -2.0V for pulse durations of less than 20 ns. 2. TA is the "Instant On" case temperature.
Current into Outputs (LOW)......................................... 20 mA Static Discharge Voltage .......................................... >2001V (per MIL-STD-883, Method 3015) Latch-Up Current .................................................... >200 mA
Operating Range
Range Industrial Ambient Temperature[2] -40C to +85C VCC 2.7V-3.6V
2
CY62126BV
Electrical Characteristics Over the Operating Range
62126BV Parameter VOH VOL VIH VIL IIX IOZ ICC Description Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage [1] Input Load Current Output Leakage Current VCC Operating Supply Current Automatic CE Power-Down Current -- TTL Inputs Automatic CE Power-Down Current -- CMOS Inputs GND V I VCC GND V I VCC, Output Disabled VCC = Max., IOUT = 0 mA, f = fMAX = 1/tRC Max. V CC, CE VIH VIN VIH or VIN VIL, f = fMAX Max. V CC, CE VCC - 0.3V, VIN VCC - 0.3V, or V IN 0.3V, f=0 0.5 55 ns 70 ns Test Conditions VCC = Min., IOH = -1.0 mA VCC = Min., IOL = 2.1 mA Min. 2.2 0.4 2.0 -0.3 -1 -1 VCC + 0.3 0.4 +1 +1 20 15 2 Typ.[3] Max. Unit V V V V A A mA mA mA
ISB1
ISB2
15
A
Capacitance[4]
Parameter CIN COUT Description Input Capacitance Output Capacitance Test Conditions TA = 25C, f = 1 MHz, VCC = 3.3V Max. 9 9 Unit pF pF
AC Test Loads and Waveforms
R1 1076 3.0V OUTPUT 30 pF INCLUDING JIG AND SCOPE (a) 3.0V R1 1076 3.0V 90% R2 1262 GND Rise TIme: 1 V/ns 1.62V
62126BV-4
ALL INPUT PULSES 90% 10% Fall TIme 1 V/ns
OUTPUT R2 5 pF 1262 INCLUDING JIG AND SCOPE (b) 581
10%
OUTPUT Equivalent to: THEVENIN EQUIVALENT
Notes: 3. Typical specifications are the mean values measured over a large sample size across normal production process variations and are taken at nominal conditions (TA = 25C, VCC=3.0V). Parameters are guaranteed by design and characterization, and not 100% tested. 4. Tested initially and after any design or process changes that may affect these parameters.
3
CY62126BV
Switching Characteristics[5] Over the Operating Range
62126BV-55 Parameter READ CYCLE tRC tAA tOHA tACE tDOE tLZOE tHZOE tLZCE tHZCE tPU tPD tDBE tLZBE tHZBE WRITE CYCLE tWC tSCE tAW tHA tSA tPWE tSD tHD tLZWE tHZWE tBW Read Cycle Time Address to Data Valid Data Hold from Address Change CE LOW to Data Valid OE LOW to Data Valid OE LOW to Low Z
[7] [6, 7]
62126BV-70 Min. 70 Max. Unit ns 70 10 70 35 5 25 10 25 0 70 35 5 25 70 60 60 0 0 50 30 0 5 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 25 60 ns ns
Description
Min. 55
Max.
55 10 55 25 5 20 10 20 0 55 25 5 20 55 45 45 0 0 40 25 0 5 25 45
OE HIGH to High Z CE HIGH to High Z
CE LOW to Low Z[7]
[6, 7]
CE LOW to Power-Up CE HIGH to Power-Down Byte Enable to Data Valid Byte Enable to LOW Z
[8] [7] [6,7]
Byte Disable to HIGH Z Write Cycle Time CE LOW to Write End
Address Set-Up to Write End Address Hold from Write End Address Set-Up to Write Start WE Pulse Width Data Set-Up to Write End Data Hold from Write End WE HIGH to Low Z[7] WE LOW to High Z
[6,7]
Byte Enable to End of Write
Notes: 5. Test conditions assume signal transition time of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified I OL/IOH and 30-pF load capacitance. 6. t HZOE, tHZCE, tHZWE, and tHZBE are specified with a load capacitance of 5 pF as in part (b) of AC Test Loads. Transition is measured 500 mV from steady-state voltage. 7. At any given temperature and voltage condition, t HZCE is less than tLZCE, tHZOE is less than tLZOE, tHZWE is less than tLZWE, and tHZBE is less than tLZBE, for any given device. 8. The internal write time of the memory is defined by the overlap of CE LOW and WE LOW. CE and WE must be LOW to initiate a write, and the transition of any of these signals can terminate the write. The input data set-up and hold timing should be referenced to the leading edge of the signal that terminates the write. Refer to truth table for further conditions from BHE and BLE.
4
CY62126BV
Data Retention Characteristics (Over the Operating Range for "L" and "LL" version only)
Parameter VDR ICCDR tCDR[4] tR Description VCC for Data Retention Data Retention Current Chip Deselect to Data Retention Time Operation Recovery Time VCC=VDR=2.0V, CE VCC - 0.3V, VIN VCC - 0.3V or, VIN 0.3V Conditions[9] Min. 2.0 0.5 0 tRC Typ Max. 3.6 15 Unit V A ns ns
Data Retention Waveform
DATA RETENTION MODE VCC 3.0V tCDR CE
62126BV-5
VDR > 2V
3.0V tR
Switching Waveforms
Read Cycle No.1[10, 11]
tRC ADDRESS tAA tOHA DATA OUT PREVIOUS DATA VALID DATA VALID
62126BV-6
Read Cycle No. 2 (OE Controlled)[11, 12, 13]
ADDRESS tRC CE tACE OE
BHE, BLE tDBE tLZBE tDOE tLZOE HIGH IMPEDANCE tLZCE VCC SUPPLY CURRENT tPU 50% tHZBE tHZOE tHZCE DATA VALID tPD 50% ISB 62126BV-7 ICC HIGH IMPEDANCE
DATA OUT
Notes: 9. No input may exceed VCC + 0.3V. 10. Device is continuously selected. OE, CE, BHE, BLE = VIL. 11. WE is HIGH for read cycle. 12. Address valid prior to or coincident with CE transition LOW. 13. Data I/O is high impedance if OE = VIH or BHE and BLE = VIH.
5
CY62126BV
Switching Waveforms (continued)
Write Cycle No. 1 (CE Controlled)[13, 14]
tWC ADDRESS tSCE CE tSA
tAW BHE, BLE tBW tPWE WE tSD DATA I/O DATA VALID tHD
tHA
62126BV-8
Write Cycle No. 2 (WE Controlled, OE HIGH During Write)[13,14]
tWC ADDRESS tSCE CE
tAW tSA WE tBW BHE, BLE tPWE
tHA
OE tHZOE DATA I/O NOTE 15 t SD DATAIN VALID
62126BV-9
t HD
Notes: 14. If CE, BHE, or BLE go HIGH simultaneously with WE going HIGH, the output remains in a high-impedance state. 15. During this period the I/Os are in the output state and input signals should not be applied.
6
CY62126BV
Switching Waveforms (continued)
Write Cycle No.3 (WE Controlled, OE LOW)[13, 14]
tWC ADDRESS tSCE CE
tSA WE
tAW tPWE
tHA
tBW BHE, BLE t tHZWE DATAI/O NOTE 15 tSD DATA VALID tLZWE
62126BV-10
HD
Truth Table
CE H L L L L L L L OE X L L L X X X H WE X H H H L L L H BLE X L L H L L H X BHE X L H L L H L X I/O 1-I/O8 High Z Data Out Data Out High Z Data In Data In High Z High Z I/O9-I/O16 High Z Data Out High Z Data Out Data In High Z Data In High Z Power Down Read All bits Read Lower bits only Read Upper bits only Write All bits Write Lower bits only Write Upper bits only Selected, Outputs Disabled Mode Power Standby (ISB) Active (ICC) Active (ICC) Active (ICC) Active (ICC) Active (ICC) Active (ICC) Active (ICC)
7
CY62126BV
Ordering Information
Speed (ns) 55 70 Ordering Code CY62126BVLL-55ZI CY62126BVLL-55BAI CY62126BVLL-70ZI CY62126BVLL-70BAI Document #: 38-00584-** Package Name Z44 BA48 Z44 BA48 44-Lead TSOP II 48-ball Fine Pitch Ball Grid Array 44-Lead TSOP II 48-ball Fine Pitch Ball Grid Array Package Type Operating Range Industrial
Package Diagrams
44-Pin TSOP II Z44
51-85087-A
8
CY62126BV
Package Diagrams (continued)
48-Ball (7.00 mm x 7.00 mm) FBGA BA48
51-85096-C
(c) Cypress Semiconductor Corporation, 2000. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.

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