Sanyo DWM-1000 Service Manual page 28

IC BLOCK DIAGRAM & DESCRIPTION
IC101 BU4066BCF (Quad Analog Switch)
IC201 T224162B-35S (DRAM)
15
WE
CASL 31
30
CASH
NO.2 CLOCK
GENERATOR
COLUMN
ADDRESS
9
BUFFER
18
A0
REFRESH
19
A1
CONTROLLER
A2 20
A3 21
A4
24
REFRESH
A5 25
COUNTER
A6
26
A7
9
27
A8
28
ROW
9 ADDRESS
BUFFER(9)
NO.1 CLOCK
RAS 16
GENERATOR
TSOP44
V V
CC 1 44 SS
I/O1 I/O16
2 43
I/O2 I/O15
3 42
I/O3 I/O14
4 41
I/O4 I/O13
5 40
V
V 6 39
SS
CC
I/O5 I/O12
7 38
I/O6 I/O11
8 37
I/O7 I/O10
9 36
I/O8 I/O9
10 35
NC 13 32
NC
NC 14 31 CASL
WE 15 30
CASH
RAS 16 29 OE
NC 17 28
A8
18 27 A7
A0
A1 19 26 A6
20 25 A5
A2
A3 21 24 A4
V V
22 23 SS
CC
Top view
- 60 -
I / O 1
1
OUT / IN IN / OUT
SWA
O / I 2
1
SWD
O / I 3
2 OUT / IN IN / OUT
I / O 4
2
IN / OUT OUT / IN
C 5 SWB
2
C 6
SWC
3
IN / OUT
V 7
ss
CONTROL
DATA-IN BUFFER
LOGIC
COLUMN
9
DECODER
512
8
SENSE AMPLIFIERS
VO GATING
512x16
512x512x16
512
9
MEMORY
ARRAY
PIN NO. SYM. TYPE
16~19,22~26 A0~A8 Input Address Input
14 RAS Input Row Address Strobe
28 CASH Input Column Address Stlobe /Upper Byte Control
29 CASL Input Column Address Stlobe /Lower Byte Control
13 WE Input Write Enable
27 OE Input Output Enable
2~5,6~10,31~34,36~39 I/O1-I/O16 Input/Output Data Input /Output
1,6,20 V Supply Power, 5V
CC
21,35,40 V Ground Ground
SS
11,12,15,30 NC - No Connec
14 V
DD
13 C
1
12 C
4
I / O
11
4
10 O / I
4
9
O / I
3
OUT / IN
8
I / O
3
2~5 I/O1~I/O4
7~10 I/O7~I/O8
16
35~38 I/O9~I/O12
40~43 I/O13~I/O16
DATA-OUT
BUFFER
29 OE
16
8
6 V
CC
V
39
SS
DESCRIPTION