Yamaha RX-V396 Service Manual page 34

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