Features: ` Fast access time
- Speed options as fast as 55 ns
` Low power consumption
- 20 A typical CMOS standby current
` JEDEC-approved pinout
- 40-Pin DIP/PDIP
- 44-Pin PLCC
` Single +5 V power supply
` ±10% power supply tolerance standard
`100% Flashrite™ programming
- Typical programming time of 8 seconds
` Latch-up protected to 100 mA from 1 V to VCC + 1 V
` High noise immunity
` Versatile features for simple interfacing
- Both CMOS and TTL input/output compatibility
- Two line control functionsPinout
SpecificationsStorage Temperature
OTP Products. . . . . . . . . . . . . . . 65°C to +125°C
All Other Products . . . . . . . . . . . 65°C to +150°C
Ambient Temperature
with Power Applied. . . . . . . . . . 55°C to +125°C
Voltage with Respect to VSS
All pins except A9, VPP, VCC . . 0.6 V to VCC + 0.6 V
A9 and VPP (Note 2) . . . . . . . . . . . .0.6 V to 13.5 V
VCC (Note 1). . . . . . . . . . . . . . . . . . . .0.6 V to 7.0 V
Notes:
1. Minimum DC voltage on input or I/O pins 0.5 V. During voltage transitions, the input may overshoot VSS to 2.0 V for periods of up to 20 ns. Maximum DC voltage on input and I/O pins is VCC + 5 V. During voltage transitions, input and I/O pins may overshoot to VCC + 2.0 V for periods up to 20 ns.
2. Minimum DC input voltage on A9 is 0.5 V. During voltage transitions, A9 and VPP may overshoot VSS to 2.0 V for periods of up to 20 ns. A9 and VPP must not exceed +13.5 V at any time.
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure of the device to absolute maximum ratings for extended periods may affect device reliability.
DescriptionThe Am27C1024 is a 1 Megabit, ultraviolet erasable programmable read-only memory. AM27C1024-120 is organized as 64 Kwords by 16 bits per word, operates from a single +5 V supply, has a static standby mode, and features fast single address location programming. Products are available in windowed ceramic DIP packages, as well as plastic one time programmable (OTP) PDIP and PLCC packages.
Data can be typically accessed in less than 55 ns, allowing high-performance microprocessors to operate without any WAIT states. AM27C1024-120 offers separate Output Enable (OE#) and Chip Enable (CE#) controls, thus eliminating bus contention in a multiple bus microprocessor system.
AMD's CMOS process technology provides high speed, low power, and high noise immunity. Typical power consumption is only 125 mW in active mode, and 100 W in standby mode.
All signals are TTL levels, including programming signals.
Bit locations may be programmed singly, in blocks, or at random. AM27C1024-120 supports AMD's Flashrite programming algorithm (100 s pulses), resulting in a typical programming time of 8 seconds.
AM27C1024-120 Data Sheet
