AT27C512R
Pin Configurations
Pin Name Function
A0 - A15 Addresses
O0 - O7 Outputs
CE Chip Enable
OE /VPP Output Enable/VPP
NC No Connect
512K (64K x 8)
OTP
CMOS
EPROM
PDIP, SOIC Top View
Note: PLCC Package Pins 1 and
17 are DON’T CONNECT.
PLCC Top View
Features
•
Fast Read Access Time - 45 ns
•
Low Power CMOS Operation
100 µA max. Standby
20 mA max. Active at 5 MHz
•
JEDEC Standard Packages
28-Lead 600-mil PDIP
32-Lead PLCC
28-Lead TSOP and SOIC
•
5V ± 10% Supply
•
High Reliability CMOS Technology
2,000V ESD Protection
200 mA Latchup Immunity
•
Rapid

Programming Algorithm - 100 µs/byte (typical)
•
CMOS and TTL Compatible Inputs and Outputs
•
Integrated Product Identification Code
•
Commercial and Industrial Temperature Ranges
Description
The AT27C512R is a low-power, high performance 524,288 bit one-time program-
mable read only memory (OTP EPROM) organized 64K by 8 bits. It requires only
one 5V power supply in normal read mode operation. Any byte can be accessed in
less than 45 ns, eliminating the need for speed reducing WAIT states on high per-
formance microprocessor systems.
Atmel’s scaled CMOS technology provides high speed, lower active power con-
sumption, and significantly faster programming. Power consumption is typically only
8 mA in Active Mode and less than 10 µA in Standby.
(continued)
TSOP Top View
Type 1
0015H
AT27C512R
3-135