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2764A Datasheet

  • 2764A

  • 64K (8K x 8) UV EPROM and OTP ROM

  • 101.50KB

  • 11頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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M27C64A
64K (8K x 8) UV EPROM and OTP ROM
VERY FAST ACCESS TIME: 150ns
COMPATIBLE with HIGH SPEED
MICROPROCESSORS, ZERO WAIT STATE
LOW POWER 鈥淐MOS鈥?CONSUMPTION:
鈥?Active Current 30mA
鈥?Standby Current 100碌A
PROGRAMMING VOLTAGE: 12.5V
ELECTRONIC SIGNATURE for AUTOMATED
PROGRAMMING
HIGH SPEED PROGRAMMING
(less than 1 minute)
28
1
FDIP28W (F)
PLCC32 (C)
DESCRIPTION
The M27C64A is a high speed 65,536 bit UV eras-
able and electrically programmable memory
EPROM ideally suited for microprocessor systems
requiring large programs. It is organized as 8,192
by 8 bits.
The 28 pin Window Ceramic Frit-Seal Dual-in-Line
package has transparent lid which allows the user
to expose the chip to ultraviolet light to erase the
bit pattern. Anew 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 Plastic Leaded Chip Carrier
package.
Figure 1. Logic Diagram
VCC
VPP
13
A0-A12
8
Q0-Q7
P
M27C64A
Table 1. Signal Names
A0 - A12
Q0 - Q7
E
G
P
V
PP
V
CC
V
SS
Address Inputs
Data Outputs
Chip Enable
Output Enable
Program
Program Supply
Supply Voltage
Ground
E
G
VSS
AI00834B
March 1995
1/11

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