W39L020 Datasheet, PDF (2/26 Pages) Winbond – 256K × 8 CMOS FLASH MEMORY

3. PIN CONFIGURATIONS
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
AAA
1 11
2 56
N
C
V
D
D
#
W
E
A
1
7
4 3 2 1 32 31 30
5
29
6
28
7
27
8
26
9
32L PLCC
25
10
24
11
23
12
22
13
21
14 15 16 17 18 19 20
A14
A13
A8
A9
A11
#OE
A10
#CE
DQ7
DDVD DDD
QQSQ QQQ
1 2S3 4 56
W39L020
4. BLOCK DIAGRAM
VDD
V_SS
#CE
#OE
#WE
CONTROL
OUTPUT
BUFFER
D_.Q0
.
DQ7
A0
.
DECODER
.
A17
CORE
ARRAY
A11
1
A9
2
A8
3
A13
4
A14
5
A17
6
#WE
7
VDD
8
NC
9
A16
10
A15
11
A12
12
A7
13
A6
14
A5
15
A4
16
32L TSOP & STSOP
32
31
#OE
A10
5. PIN DESCRIPTION
30
#CE
29
DQ7
28
DQ6
27
DQ5
SYMBOL
PIN NAME
26
DQ4
25
DQ3
24
V SS
A0 − A17 Address Inputs
23
DQ2
22
DQ1
21
DQ0
DQ0 − DQ7 Data Inputs/Outputs
20
A0
19
A1
#CE
Chip Enable
18
A2
17
A3
#OE
Output Enable
#WE
Write Enable
VDD
Power Supply
VSS
Ground
-2-