M27C64A

64 Kbit (8Kb x 8) UV EPROM and OTP EPROM

March 1998

1/12

5V

± 10% SUPPLY VOLTAGE in READ

OPERATION

FAST ACCESS TIME: 150ns

LOW POWER “CMOS” CONSUMPTION:

– Active Current 30mA

– Standby Current 100

µA

PROGRAMMING VOLTAGE: 12.5V

± 0.25V

HIGH SPEED PROGRAMMING

(less than 1 minute)

ELECTRONIC SIGNATURE

– Manufacturer Code: 9Bh

– Device Code: 08h

DESCRIPTION

The M27C64A is a 64Kbit EPROM offered in the

two ranges UV (ultra violet erase) and OTP (one

time programmable). It is ideally suited for micro-

processor systems requiring large programs and is

organized as 8,192 by 8 bits.

The FDIP28W (window ceramic frit-seal package)

has transparent lid which allows the user to expose

the chip to ultraviolet light to erase the bit pattern.

A new pattern can then be written to the device by

following the programming procedure.

For applications where the content is programmed

only on time and erasure is not required, the

M27C64A is offered in PLCC32 package.

AI00834B

13

A0-A12

P

Q0-Q7

VPP

VCC

M27C64A

G

E

VSS

8

Figure 1. Logic Diagram

A0-A12

Address Inputs

Q0-Q7

Data Outputs

E

Chip Enable

G

Output Enable

P

Program

Program Supply

Supply Voltage

Ground

Table 1. Signal Names

PLCC32 (C)

1

28

FDIP28W (F)