w29c020-12b Winbond Electronics Corp America, w29c020-12b Datasheet - Page 2

• Manufacturer Part Number: w29c020-12b
• Description: 256k X 8 Cmos Flash Memory
• Manufacturer: Winbond Electronics Corp America

PIN CONFIGURATIONS
A13
A14
A17
V
A16
A15
A12
A11
WE
NC
A9
A7
A6
A5
A4
A8
DD
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
DQ0
GND
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
A12
A16
A15
NC
A5
A4
A3
A2
A1
A0
A7
A6
10
11
12
13
6
8
5
7
9
10
15
11
12
13
14
16
2
3
5
6
7
8
9
1
4
14
4
A
1
2
D
Q
1
15
3
A
1
5
D
Q
2
16
32-pin
A
1
6
2
G
N
D
32-pin
PLCC
32-pin
TSOP
DIP
17
N
C
1
D
Q
3
32
18
V
D
D
D
Q
4
31
19
W
E
D
Q
5
/
30
20
D
Q
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
6
A
1
7
27
23
29
28
26
25
24
22
21
V
WE
OE
DQ7
DQ5
DQ4
DQ3
A17
A14
A13
A8
A9
A11
A10
CE
DQ6
DD
A14
A13
A11
OE
A10
CE
DQ7
A8
A9
31
29
28
26
25
23
18
17
32
30
27
24
22
21
20
19
DQ5
A0
A2
OE
A10
CE
DQ7
DQ6
DQ4
DQ3
GND
DQ2
DQ1
DQ0
A1
A3
- 2 -
BLOCK DIAGRAM
PIN DESCRIPTION
V
WE
DQ0 DQ7
V
CE
OE
A17
SYMBOL
DD
SS
A0
A0 A17
.
.
.
GND
V
WE
OE
CE
NC
DD
CONTROL
DECODER
Address Inputs
Data Inputs/Outputs
Chip Enable
Output Enable
Write Enable
Power Supply
Ground
No Connection
PIN NAME
8K Byte Boot Block (Optional)
8K Byte Boot Block (Optional)
OUTPUT
BUFFER
ARRAY
CORE
W29C020
DQ0
DQ7
.
.