Yamaha RX-V396 Service Manual page 34

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RX-V396/RX-V396RDS/HTR-5230/HTR-5230RDS
IC7 : LP61256GS-8Q (256K SRAM)
32768-word x 8-bit High Speed Static RAM
A14
1
2
A12
A7
3
A6
4
5
A5
A4
6
7
A3
TOP VIEW
8
A2
A1
9
10
A0
11
D0
D1
12
13
D2
14
GND
NOTE)
A0-A14:
Address input
D0-D7:
Data input/output
/CS:
Chip select input
/OE:
Output enable input
/WE:
Write enable input
33
A0
28
VCC
10
A5
5
27
/WE
A6
4
26
A13
A7
3
A9
24
25
A8
A10
21
24
A9
A11
23
23
A11
A12
2
22
/OE
21
A10
20
/CS
A1
9
19
D7
A2
8
A3
7
18
D6
A4
6
17
D5
A8
25
16
D4
A13
26
A14
1
15
D3
/CS
20
/WE
27
/OE
22
32768-word x 8-bit
MEMORY ARRAY
(256-row X 1024-column)
COLUMN I/O
COLUMN ADDRESS
DECODER
COLUMN INPUT
BUFFER
CHIP SELECT
WRITE CONTROL
OUTPUT CONTROL
VCC
28
GND
14
11
D0
12
D1
13
D2
15
D3
16
D4
17
D5
18
D6
19
D7

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