JVC KD-S845 Service Manual page 17
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Also See for KD-S845:
- Service manual (26 pages) ,
- Schematic diagrams (10 pages) ,
- Instructions manual (35 pages)
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4.2
IC-PST600M/G/-W (IC702) : System reset
• Block diagram
4.3 K6R1008VDTI10-X (IC451) : 128K x 8 Bit High-Speed CMOS Static RAM
• Pin layout
A
1
0
A
2
1
A
3
2
A
4
3
CS
5
I/O
6
1
I/O
7
2
V
8
CC
TE
L 13942296513
V
9
SS
I/O
10
3
I/O
11
4
WE
12
A
13
4
A
14
5
A
15
6
A
16
7
• Pin function
Pin No.
Symbol
1 to 4
A0 to A3 Address inputs
5
CS
6,7
I/O1,I/O2 Data inputs/outputs
8
VCC
9
VSS
10,11
I/O3,I/O4 Data inputs/outputs
12
WE
www
.
Co1
32
A
16
31
A
15
30
A
14
29
A
13
28
OE
27
I/O
8
26
I/O
7
25
V
SS
24
V
CC
23
I/O
6
22
I/O
5
21
A
12
20
A
11
19
A
10
18
A
9
17
A
8
Function
Chip select
Power (+3.3V)
Ground
Write enable
x
ao
y
i
http://www.xiaoyu163.com
8
OP1
• Block diagram
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
Q Q
A
8
3
6 7
1 3
I/O
to I/O
1
8
CS
WE
OE
Pin No.
Symbol
13 to 21 A4 to A12
22,23
I/O5,I/O6 Data inputs/outputs
24
VCC
25
26,27
I/O7,I/O8 Data inputs/outputs
28
29 to 30 A13 to A16 Address inputs
u163
.
2 9
9 4
2 8
1
IN
3
Vout
2
GND
Pre-Charge Circuit
Clk Gen.
Memory Array
512 Rows
256x8 Columns
1 5
0 5
8
2 9
9 4
Data
I/O Circuit
Cont.
Column Select
CLK
Gen.
A
A
A
A
9
10
11
12
Function
Address inputs
Power (+3.3V)
VSS
Ground
OE
Output enable
m
co
9 9
2 8
9 9
A
A
A
A
13
14
15
16
(No.49858)1-17
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