M27C64A
64 Kbit (8Kb x 8) UV EPROM and OTP EPRO M
March 1998 1/12
5V
±
10% SUPPLY VOLTAGE in READ
OPERATION
FAST A CCES S TIME : 150ns
LOW POWER “CMOS” CONSUMPTI ON:
– Active Current 30mA
– Standby Current 100
µ
A
PROGRAMMING VOL TAGE: 12.5V
±
0.25V
HIG H SPEED PROGRAMMIN G
(less than 1 minute)
ELECTR ON IC SIGNATUR E
– Manufacturer Code: 9Bh
– Device Code: 08h
DES CRIPTION
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 ceram ic 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
V
PP
V
CC
M27C64A
G
E
V
SS
8
Figure 1. Logic Diagram
A0-A12 Address Inputs
Q0-Q7 Data Outputs
E Chip Enable
G Output Enable
P Program
V
PP
Program Supply
V
CC
Supply Voltage
V
SS
Ground
Table 1. Signal Names
PLCC32 (C)
1
28
FDIP28W (F)