W27E257-12

32K X 8 ELECTRICALLY ERASABLE EPROM

 

 

 

GENERAL DESCRIPTION

The W27E257 is a high-speed, low-power Electrically Erasable and Programmable Read Only

Memory organized as 32768 ´ 8 bits that operates on a single 5 volt power supply. The W27E257

provides an electrical chip erase function. This part was the same EPROM Writer's utilities as the

W27E256.

 

 

FEATURES

High speed access time:

100/120/150 nS (max.)

Read operating current: 15 mA (typ.)

Erase/Programming operating current

1 mA (typ.)

Standby current: 5 mA (typ.)

Single 5V power supply

+14V erase/+12V programming voltage

Fully static operation

All inputs and outputs directly TTL/CMOS 

compatible

Three-state outputs

Available packages: 28-pin 600 mil DIP and

32-pin PLCC

 

 

 

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