JVC XV-D9000 Service Manual page 24

XV-D9000
IS61LV256-12T(IC163,IC164,IC165,IC173):32k X 8 Low voltage CMOS Static RAM
1.Pin layout
OE 22
A11 23
A9 24
A8 25
A13 26
WE 26
VCC 28
A14 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
3.Pin function
Pin No. Symbol
1 A14
2 A12
3~10 A7~A0
11~13 I/O0~I/O2
14 GND
15~19 I/O3~I/O7
20 CE
21 A10
22 OE
23 A11
24,25 A9,A8
26 A13
27 WE
28 VCC
1-24
21 A10
20 CE
19 I/O7
18 I/O6
17 I/O5
16 I/O4
15 I/O3
14 GND
13 I/O2
12 I/O1
11 I/O0
10 A0
9 A1
8 A2
Function
I/O
I Address input
I
Address input
I
Address input
I/O Data I/O
-
Connects with the ground
I/O
Data I/O
I Chip enable input
I
Address input
I Output enable input
I Address input
I
Address input
I Address input
I Write enable input
-
Power supply terminal
2.Block diagram
A0-A14 DECODER
VCC
GND
I/O
I/O0-I/O7
DATA
CIRCUIT
CE
CONTROL
OE
CIRCUIT
WE
256 X 1024
MEMORY ARRAY
COLUMN I/O