AT27C1024
1
PDIP Top View
TSOP Top View
Type 1
PLCC Top View
Features
• Fast Read Access Time - 45 ns
• Low Power CMOS Operation
– 100 µA 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
• Rapid
™
Programming Algorithm - 100 µs/word (typical)
• CMOS and TTL Compatible Inputs and Outputs
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges
Description
The AT27C1024 is a low-power, high-performance 1,048,576 bit one-time program-
mable 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.
0019I-A–7/97
AT27C1024
1-Megabit
(64K x 16)
OTP EPROM
AT27C1024
Pin Configurations
Note: Both GND pins must be
connected.
Pin Name Function
A0 - A15 Addresses
O0 - O15 Outputs
CE Chip Enable
OE Output Enable
PGM Program Strobe
NC No Connect
(continued)