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| AT27C1024 Features * Fast Read Access Time - 45 ns * Low Power CMOS Operation * - 100 A max. Standby - 30 mA max. Active at 5 MHz JEDEC Standard Packages - 40-Lead 600-mil PDIP - 44-Lead PLCC - 40-Lead TSOP (10 mm x 14 mm) Direct Upgrade from 512K (AT27C516) EPROM 5V 10% Power Supply High Reliability CMOS Technology - 2000V ESD Protection - 200 mA Latchup Immunity RapidTM Programming Algorithm - 100 s/word (typical) CMOS and TTL Compatible Inputs and Outputs Integrated Product Identification Code Commercial and Industrial Temperature Ranges AT27C1024 * * * * * * * 1-Megabit (64K x 16) OTP EPROM AT27C1024 Description The AT27C1024 is a low-power, high-performance 1,048,576 bit one-time programmable read only memory (OTP EPROM) organized 64K by 16 bits. It requires only one 5V power supply in normal read mode operation. Any word can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states. The by-16 organization make this part ideal for high-performance 16- and 32-bit microprocessor systems. (continued) Pin Configurations Pin Name A0 - A15 O0 - O15 CE OE PGM NC Note: Function Addresses Outputs Chip Enable Output Enable Program Strobe No Connect Both GND pins must be connected. PDIP Top View PLCC Top View TSOP Top View Type 1 0019I-A-7/97 1 AT27C1024 In read mode, the AT27C1024 typically consumes 15 mA. Standby mode supply current is typically less than 10 A. The AT27C1024 is available in industry standard JEDECapproved one-time programmable (OTP) plastic PDIP, PLCC, and TSOP packages. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems. With high density 64K word storage capability, the AT27C1024 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. Atmel's 27C1024 have additional features to ensure high quality and efficient production use. The RapidTM Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 s/word. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages. System Considerations Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 F high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 F bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array. 2 AT27C1024 Block Diagram Absolute Maximum Ratings* Temperature Under Bias ......................-55C to +125C Storage Temperature............................-65C to +150C Voltage on Any Pin with Respect to Ground ..............................-2.0V to +7.0V (1) Voltage on A9 with Respect to Ground ...........................-2.0V to +14.0V (1) VPP Supply Voltage with Respect to Ground ............................-2.0V to +14.0V (1) *NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V DC which may overshoot to +7.0V for pulses of less than 20 ns. Operating Modes Mode/Pin Read Output Disable Standby Rapid Program(2) PGM Verify PGM Inhibit Product Identification(4) Notes: 1. X can be VIL or VIH. 2. Refer to Programming Characteristics. 3. VH = 12.0 0.5V. 4. Two identifier words may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled low (VIL) to select the Manufacturer's Identification word and high (VIH) to select the Device Code word. 5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB. CE VIL X VIH VIL VIL VIH VIL OE VIL VIH X VIH VIL X VIL PGM X(1) X X VIL VIH X X Ai Ai X X Ai Ai X A9 = VH(3) A0 = VIH or VIL A1 - A15 = VIL VPP X X X(5) VPP VPP VPP VCC Outputs DOUT High Z High Z DIN DOUT High Z Identification Code 3 AT27C1024 DC and AC Operating Conditions for Read Operation AT27C1024 -45 Operating Temperature (Case) VCC Power Supply Com. Ind. 0C - 70C -40C - 85C 5V 10% -55 0C - 70C -40C - 85C 5V 10% -70 0C - 70C -40C - 85C 5V 10% -90 0C - 70C -40C - 85C 5V 10% -12 0C - 70C -40C - 85C 5V 10% -15 0C - 70C -40C - 85C 5V 10% DC and Operating Characteristics for Read Operation Symbol ILI ILO IPP1(2) ISB ICC VIL VIH VOL VOH Note: Parameter Input Load Current Output Leakage Current VPP(1)) Read/Standby Current VCC(1) Standby Current VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage IOL = 2.1 mA IOH = -400 A 2.4 Condition VIN = 0V to VCC VOUT = 0V to VCC VPP = VCC ISB1 (CMOS), CE = VCC 0.3V ISB2 (TTL), CE = 2.0 to VCC + 0.5V f = 5 MHz, IOUT = 0 mA, CE = VIL -0.6 2.0 Min Max 1 5 10 100 1 30 0.8 VCC + 0.5 0.4 Units A A A A mA mA V V V V 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP. 2. VPP may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and IPP. AC Characteristics for Read Operation AT27C1024 -45 Symbol Parameter tACC(3) tCE(2) tOE(2)(3) tDF(4)(5) tOH Notes: Address to Output Delay CE to Output Delay OE to Output Delay OE or CE High to Output Float, whichever occurred first Output Hold from Address, CE or OE, whichever occurred first 2, 3, 4, 5. - see AC Waveforms for Read Operation. 7 Condition CE = OE = VIL OE = VIL CE = VIL -55 -70 -90 -12 -15 Min Max Min Max Min Max Min Max Min Max Min Max Units 45 45 20 20 7 55 55 25 25 7 70 70 25 25 0 90 90 30 30 0 120 120 35 30 0 150 150 50 40 ns ns ns ns ns 4 AC Waveforms for Read Operation(1) Notes: 1. Timing measurement reference level is 1.5V for -45 and -55 devices. Input AC drive levels are VIL = 0.0V and VIH = 3.0V. Timing measurement reference levels for all other speed grades are VOL = 0.8V and VOH = 2.0V. Input AC drive levels are VIL = 0.45V and VIH = 2.4V. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC. This parameter is only sampled and is not 100% tested. Output float is defined as the point when data is no longer driven. 2. 3. 4. 5. Pin Capacitance (f = 1 MHz T = 25C)(1) Typ CIN COUT Note: 4 8 Max 10 12 Units pF pF Conditions VIN = 0V VOUT = 0V 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. Input Test Waveforms and Measurement Levels Output Test Load For -45 and -55 Devices Only For -70 and slower Devices Only Note: CL = 100 pF including jig capacitance except -45 and -55 devices, where CL = 30 pF. 5 AT27C1024 AT27C1024 Programming Waveforms(1) Notes: 1. 2. 3. The Input Timing Reference is 0.8V for V IL and 2.0V for VIH. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. When programming the AT27C1024 a 0.1 F capacitor is reqired across VPP and ground to suppress sputious voltage transients. DC Programming Characteristics TA = 25 5xC, VCC = 6.5 0.25V, VPP = 13.0 0.25V Limits Symbol ILI VIL VIH VOL VOH ICC2 IPP2 VID Parameter Input Load Current Input Low Level Input High Level Output Low Voltage Output High Voltage VCC Supply Current (Program and Verify) VPP Supply Current A9 Product Identification Voltage CE = PGM = VIL 11.5 IOL = 2.1 mA IOH = -400 A 2.4 50 30 12.5 Test Conditions VIN = VIL, VIH -0.6 2.0 Min Max 10 0.8 VCC + 0.1 0.4 Units A V V V V mA mA V 6 AT27C1024 AC Programming Characteristics TA = 25 5C, VCC = 6.5 0.25V, VPP = 13.0 0.25V Limits Symbol tAS tCES tOES tDS tAH tDH tDFP tVPS tVCS tPW tOE tPRT Notes: 1. 2. 3. Test Conditions(1) Parameter Address Setup Time CE Setup Time OE Setup Time Data Setup Time Address Hold Time Data Hold Time OE High to Output Float Delay(2) VPP Setup Time VCC Setup Time PGM Program Pulse Width(3) Data Valid from OE VPP Pulse Rise Time During Programming Min 2 2 Max Units s s s s s s Input Rise and Fall Times (10% to 90%) 20ns Input Pulse Levels 0.45V to 2.4V Input Timing Reference Level 0.8V to 2.0V Output Timing Reference Level 0.8V to 2.0V 2 2 0 2 0 2 2 95 105 150 50 130 ns s s s ns ns VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven -- see timing diagram. Program Pulse width tolerance is 100 sec 5%. Atmel's 27C1024 Integrated Product Identification Code Pins Codes Manufacturer Device Type A0 0 1 015-08 0 0 O7 0 1 O6 0 1 O5 0 1 O4 1 1 O3 1 0 O2 1 0 O1 1 0 O0 0 1 Hex Data 001E 00F1 7 Rapid Programming Algorithm A 100 s PGM pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and VPP is raised to 13.0V. Each address is first programmed with one 100 s PGM pulse without verification. Then a verification / reprogramming loop is executed for each address. In the event a word fails to pass verification, up to 10 successive 100 s pulses are applied with a verification after each pulse. If the word fails to verify after 10 pulses have been applied, the part is considered failed. After the word verifies properly, the next address is selected until all have been checked. VPP is then lowered to 5.0V and VCC to 5.0V. All words are read again and compared with the original data to determine if the device passes or fails. 8 AT27C1024 AT27C1024 Ordering Information tACC (ns) 45 ICC (mA) Active 30 Standby 0.1 Ordering Code AT27C1024-45JC AT27C1024-45PC AT27C1024-45VC AT27C1024-45JI AT27C1024-45PI AT27C1024-45VI AT27C1024-55JC AT27C1024-55PC AT27C1024-55VC AT27C1024-55JI AT27C1024-55PI AT27C1024-55VI AT27C1024-70JC AT27C1024-70PC AT27C1024-70VC AT27C1024-70JI AT27C1024-70PI AT27C1024-70VI AT27C1024-90JC AT27C1024-90PC AT27C1024-90VC AT27C1024-90JI AT27C1024-90PI AT27C1024-90VI AT27C1024-12JC AT27C1024-12PC AT27C1024-12VC AT27C1024-12JI AT27C1024-12PI AT27C1024-12VI AT27C1024-15JC AT27C1024-15PC AT27C1024-15VC AT27C1024-15JI AT27C1024-15PI AT27C1024-15VI Package 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V Operation Range Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C) Commercial (0C to 70C) Industrial (-40C to 85C) 30 0.1 55 30 0.1 30 0.1 70 30 0.1 30 0.1 90 30 0.1 30 0.1 120 30 0.1 30 0.1 44J 40P6 40V 44J 40P6 40V 44J 40P6 40V 150 30 0.1 30 0.1 Package Type 44J 40P6 40V 44-Lead, Plastic J-Leaded Chip Carrier (PLCC) 40-Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 40-Lead, Plastic Thin Small Outline Package (TSOP) 10 x 14 mm 9 |
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