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M27256-20F1 Arkusz danych(PDF) 1 Page - STMicroelectronics

Numer części M27256-20F1
Szczegółowy opis  NMOS 64K (8K x 8) UV EPROM
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M27256-20F1 Arkusz danych(HTML) 1 Page - STMicroelectronics

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AI00776B
13
A0-A12
P
Q0-Q7
VPP
VCC
M2764A
G
E
VSS
8
Figure 1. Logic Diagram
M2764A
NMOS 64K (8K x 8) UV EPROM
FAST ACCESS TIME: 180ns
EXTENDED TEMPERATURE RANGE
SINGLE 5V SUPPLY VOLTAGE
LOW STANDBY CURRENT: 35mA max
TTLCOMPATIBLE DURING READ and PROGRAM
FAST PROGRAMMING ALGORITHM
ELECTRONIC SIGNATURE
PROGRAMMING VOLTAGE: 12V
DESCRIPTION
The M2764A is a 65,536 bit UV erasable and
electrically programmable memory EPROM. It is
organized as 8,192 words by 8 bits.
The M27C64A 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
pattern can then be written to the device by follow-
ing the programming procedure.
A0 - A12
Address Inputs
Q0 - Q7
Data Outputs
E
Chip Enable
G
Output Enable
P
Program
VPP
Program Supply
VCC
Supply Voltage
VSS
Ground
Table 1. Signal Names
1
28
FDIP28W (F)
March 1995
1/10


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