— 49 —
WRITE
CLOCK
GENERATOR
DATA INPUT
BUFFER
DATA OUTPUT
BUFFER
COLUMN
DECODER
SENSE AMP
I/O GATE
4M BIT
MEMORY
CELL
ROW
DECODER
ADDRESS
BUFFER
PRE-
DECODER
REFRESH
ADDRESS
COUNTER
BOARD
BIAS
GENERATOR
MODE
CONTROL
CLOCK
GENERATOR
1
CLOCK
GENERATOR
2
18
24
25
26
17
16
15
14
5
4
1
2
3
9
10
11
12
13
23
22
DQ1
DQ2
WE
RAS
A9
A0
A1
A2
A3
VCC
VSS
DQ4
DQ3
CAS
OE
A8
A7
A6
A5
A4
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
LEVEL
SHIFT
OP-AMP
LEVEL
SHIFT
DRIVER-MUTE
50K
D.BUF
13.3K
10K
FIN
Vcc
VIN4
VIN4
VO4(–)
VO4(+)
VO3(–)
VO3(+)
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
D.BUF
D.BUF
D.BUF
–
+
–
+
–
+
–
+
13.3K
50K
10K
100
10K
10K
LEVEL
SHIFT
D.BUF
D.BUF
–
+
13.3K
10K
LEVEL
SHIFT
D.BUF
13.3K
D.BUF
–
+
NC
Vcc
REGULATOR
BIAS
T.S.D.
MONITOR
–
+
VIN3
VIN3
GND
NC
OP
IN(–)
OP
OUT
GND
BIAS IN
BIAS
VIN1
VIN1
VO1(+)
VO2(–)
VO2(+)
VIN2
REG OUT
MUTE
RESET
REG-B
REGULA
T
OR
FIN
VO1(–)
GND
IC703
BA6898S
IC706
MB814400C
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