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AT27C256R Datasheet

  • AT27C256R

  • 256K (32K x 8) OTP EPROM

  • 16頁

  • ATMEL   ATMEL

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AT27C256R
Features
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Fast Read Access Time - 45 ns
Low Power CMOS Operation
100
碌A(chǔ)
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
鹵
10% Supply
High Reliability CMOS Technology
2,000V ESD Protection
200 mA Latchup Immunity
Rapid
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Programming Algorithm - 100
碌s/byte
(typical)
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial and Industrial Temperature Ranges
256K (32K x 8)
OTP
CMOS
EPROM
Description
The AT27C256R is a low-power, high performance 262,144 bit one-time programma-
ble read only memory (OTP EPROM) organized 32K 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 performance
microprocessor systems.
Atmel鈥檚 scaled CMOS technology provides low active power consumption, and fast
programming. Power consumption is typically only 8 mA in Active Mode and less
than 10
碌A(chǔ)
in Standby.
(continued)
Pin Configurations
Pin Name
A0 - A14
O0 - O7
CE
OE
NC
Function
Addresses
Outputs
Chip Enable
Output Enable
No Connect
PDIP, SOIC Top View
AT27C256R
PLCC Top View
TSOP Top View
Type 1
Note: PLCC Package Pins 1 and
17 are DON鈥橳 CONNECT.
0014G
3-125

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