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NOT FOR NEW DESIGN

November 2000

This is information on a product still in production but not recommended for new designs.

M27512

NMOS 512 Kbit (64Kb x 8) UV EPROM

s

FAST ACCESS TIME: 200ns

s

EXTENDED TEMPERATURE RANGE

s

SINGLE 5V SUPPLY VOLTAGE

s

LOW STANDBY CURRENT: 40mA max

s

TTL COMPATIBLE DURING READ and

PROGRAM

s

FAST PROGRAMMING ALGORITHM

s

ELECTRONIC SIGNATURE

s

PROGRAMMING VOLTAGE: 12V

DESCRIPTION

The M27512 is a 524,288 bit UV erasable and

electrically programmable memory EPROM. It is

organized as 65,536 words by 8 bits.

The M27512 is housed in a 28 Pin Window Ce-

ramic Frit-Seal Dual-in-Line package. The trans-

parent lid allows the user to expose the chip to

ultraviolet light to erase the bit pattern. A new pat-

tern can then be written to the device by following

the programming procedure.

Figure 1. Logic Diagram

AI00765B

16

Q0-Q7

VCC

M27512

GVPP

VSS

8

A0-A15

E

1

28

FDIP28W (F)