Sony UCP-8060E Maintenance Manual page 40

IC
MAX1771CSA-TP (MAXIM)
STEP UP DC-DC CONTROLLER
—TOP VIEW—
EXT 1 8
OUT
V+ 2 7
FB 3 6
IN
SHDN 4 5
IN
1.5 V
REFERENCE
ERROR
COMPARATOR
MIN OFF-TIME
ONE-SHOT
Q
TRIG
2.3 us
F/F
S Q
R
LOW-VOLTAGE
OSCILLATOR
MAX ON-TIME
ONE-SHOT
Q
TRIG
16 us
CURRENT-SENSE
MT4LC4M16R6TG-5TR (MICRON)
64 M (4,194,304 x 16)-BIT DRAM WITH EXTENDED DATA OUT
—TOP VIEW—
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
INPUTS
A0 - A11 : ADDRESS
A12 : ADDRESS FOR 8 K PRODUCT
LCAS
: LOWER COLUMN ADDRESS STROBE
RAS
: ROW ADDRESS STROBE
UCAS
: UPPER COLUMN ADDRESS STROBE
W
: READ/WRITE
*PIN NO.33
SIGNAL ROW ADDRESS
8 K
A12 KM416V4004, MT4LC4M16N3
NC 4 K KM416V4104, MT4LC4M16R6
3-4
INPUTS
CS : CURRENT SENSE AMPLIFIER
CS
IN
FB : FEED BACK SET
GND
SHDN : SHUTDOWN
V+ : POWER SUPPLY INPUT
A.GND
REF
OUT OUTPUTS
EXT : GATE DRIVE FOR EXTERNAL
N-CHANNEL POWER TRANSISTOR
REF : 1.5 V REFERENCE VOLTAGE
DUAL-MODE
COMPARATOR
_
+
+
BIAS
50 mV
_
CIRCUITRY
+
_
_
+
+
2.5 V
_
_
+
+
0.1 V
_
AMPLIFIER
PIN PIN
I/O SIGNAL I/O
NO. NO.
50
1 — V 26 —
49 CC
48 2 I/O DQ0 27 I
3 I/O DQ1 28 I
47
4 I/O DQ2 29 I
46
5 I/O DQ3 30 I
45
6 — V 31 I
44 CC
43 7 I/O DQ4 32 I
8 I/O DQ5 33 I
42
9 I/O DQ6 34 —
41
10 I/O DQ7 35 —
40
11 — NC 36 O
39
38 12 — V 37 I
CC
W
13 I 38 I
37
RAS
14 I 39 —
36
15 — NC 40 —
35
16 — NC 41 I/O
34
17 — NC 42 I/O
33
18 — NC 43 I/O
32
19 I A0 44 I/O
31
20 I A1 45 —
30
21 I A2 46 I/O
29
22 I A3 47 I/O
28
23 I A4 48 I/O
27
24 I A5 49 I/O
26
25 — V 50 —
CC
OUTPUT
OE
: DATA ENABLE
INPUTS/OUTPUTS
DQ0 - DQ15 : DATA
DEVICE NAME
RQ5RW28BA-TR (RICOH)
POSITIVE VOLTAGE REGULATOR
—TOP VIEW—
CE V
OUT
4 3
1 2
GND V
CC
5
REF
2
V
CC
3
FB
4
SHDN
V REF
4
CE
2
V+
1
EXT
8
CS
SIGNAL
GND
A6
A7
A8
A9
A10
A11
A12 (NC)*
NC
NC
OE
UCAS
LCAS
GND
NC
DQ8
DQ9
DQ10
DQ11
GND
DQ12
DQ13
DQ14
DQ15
GND
2 3
V V
CC OUT
CE GND
4 1
3
V OUT
_
+
CURRENT
LIMIT
1
GND
UCP-8060