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E2PROM
W27C020
PIN CONFIGURATIONS
Vcc
Vpp
32
1
A16
31
PGM
2
A15
3
30
A17
A14
A12
4
29
A13
A7
5
28
27
A8
A6
6
A5
26
A9
7
32-pin DIP
A4
8
25
A11
A3
9
24
OE
A2
10
23
A10
A1
11
22
CE
21
Q7
A0
12
Q0
13
20
Q6
14
19
Q5
Q1
18
Q2
15
Q4
GND
16
17
Q3
8-9
BLOCK DIAGRAM
Q0
PGM
OUTPUT
.
CE
CONTROL
BUFFER
OE
Q7
A0
.
CORE
DECODER
ARRAY
A17
V
CC
GND
V
PP
PIN DESCRIPTION
SYMBOL
DESCRIPTION
Address Inputs
A0−A17
Q0−Q7
Data Inputs/Outputs
Chip Enable
CE
Output Enable
OE
Program Enable
PGM
V
Program/Erase Supply Voltage
PP
V
Power Supply
CC
GND
Ground
DRAM
T224162B28S
8-9
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