AT27C512R
Features
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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
512K (64K x 8)
OTP
CMOS
EPROM
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)
Pin Configurations
Pin Name
A0 - A15
O0 - O7
CE
OE /V
PP
NC
Function
Addresses
Outputs
Chip Enable
Output Enable/V
PP
No Connect
PDIP, SOIC Top View
AT27C512R
PLCC Top View
TSOP Top View
Type 1
Note: PLCC Package Pins 1 and
17 are DON’T CONNECT.
0015H
3-135
ATMEL [ ATMEL CORPORATION ]
