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AT27BV256-90TC fiches techniques PDF

ATMEL Corporation - 256K 32K x 8 Unregulated Battery-Voltage High Speed OTP CMOS EPROM

Numéro de référence AT27BV256-90TC
Description 256K 32K x 8 Unregulated Battery-Voltage High Speed OTP CMOS EPROM
Fabricant ATMEL Corporation 
Logo ATMEL Corporation 





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AT27BV256-90TC fiche technique
AT27BV256
Features
Fast Read Access Time - 70 ns
•• Dual Voltage Range Operation
Unregulated Battery Power Supply Range, 2.7V to 3.6V
or Standard 5V ± 10% Supply Range
Pin Compatible with JEDEC Standard AT27C256
•• Low Power CMOS Operation
20 µA max. (less than 1 µA typical) Standby for VCC = 3.6V
29 mW max. Active at 5 MHz for VCC = 3.6V
JEDEC Standard Surface Mount Packages
32-Lead PLCC
28-Lead 330-mil SOIC
28-Lead TSOP
High Reliability CMOS Technology
2,000V ESD Protection
200 mA Latchup Immunity
RapidProgramming Algorithm - 100 µs/byte (typical)
CMOS and TTL Compatible Inputs and Outputs
JEDEC Standard for LVTTL and LVBO
Integrated Product Identification Code
•• Commercial and Industrial Temperature Ranges
Description
256K (32K x 8)
Unregulated
Battery-Voltage
High Speed
OTP
CMOS EPROM
The AT27BV256 is a high performance, low power, low voltage 262,144 bit one-time
programmable read only memory (OTP EPROM) organized as 32K by 8 bits. It re-
quires only one supply in the range of 2.7V to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using either regulated or unregulated battery
power.
Atmel’s innovative design techniques provide fast speeds that rival 5V parts while
keeping the low power consumption of a 3V supply. At VCC = 2.7V, any word can be
accessed in less than 70 ns. With a typical power dissipation of only 18 mW at 5 MHz
and VCC = 3V, the AT27BV256 consumes less than one fifth the power of a standard
5V EPROM.
(continued)
Pin Configurations
SOIC Top View
AT27BV256
Pin Name
A0 - A14
O0 - O7
CE
OE
NC
Function
Addresses
Outputs
Chip Enable
Output Enable
No Connect
PLCC Top View
TSOP Top View
Type 1
Note: PLCC Package Pins 1
and 17 are DON’T CONNECT.
0601A
3-3

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