max. (less than 1
29 mW max. Active at 5 MHz for V
鈩?/div>
Programming Algorithm - 100
碌s/byte
(typical)
CMOS and TTL Compatible Inputs and Outputs
JEDEC Standard for LVTTL
Integrated Product Identification Code
Commercial and Industrial Temperature Ranges
256K (32K x 8)
Low Voltage
OTP
CMOS EPROM
Description
The AT27LV256A 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 3.0V to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using battery power.
Atmel鈥檚 innovative design techniques provide fast speeds that rival 5V parts while
keeping the low power consumption of a 3.3V supply. At V
CC
= 3.0V, any byte can be
accessed in less than 70 ns. With a typical power dissipation of only 18 mW at 5 MHz
and V
CC
= 3.3V, the AT27LV256A consumes less than one fifth the power of a stand-
ard 5V EPROM.
(continued)
Pin Configurations
Pin Name
A0 - A14
O0 - O7
CE
OE
NC
Function
Addresses
Outputs
Chip Enable
Output Enable
No Connect
AT27LV256A
SOIC Top View
PLCC Top View
TSOP Top View
Type 1
Note:PLCC Package Pins 1 and 17
are DON鈥橳 CONNECT.
0547A
3-75