Sony BC-1WD, Service Manual

Page: 24 / 34

5-4
BC-1WD
IC
1 2 3 4 5 6 7
14 13 12 11 10 9 8
GND
V
CC
+
_
+
_
+
_
+
_
QUAD COMPARATORS
—TOP VIEW—
L78MG (SANYO)
LM339NS (TI)
UPC339G2
37
38
39
40
41
42
43
44
45
46
47
48
24
23
22
21
20
19
18
17
16
15
14
13
36 35 34 33 32 31 30 29 28 27 26 25
1 2 3 4 5 6 7 8 9
10 11 12
8-BIT ORIGINAL MICRO CONTROLLER
—TOP VIEW—
1
2
3
4
5
6
7
8
9
10
11
12
—
I/O
I
I
I
O
—
I
O
O
O
O
A.V
CC
RST
MOD0
MOD1
X0
X1
V
CC
X0A
X1A
P27
P26
P25
13
14
15
16
17
18
19
20
21
22
23
24
O
I/O
I/O
O
O
I/O
—
I/O
I/O
I/O
I/O
I/O
P24
P23
P22
P21
P20
P17
GND
P16
P15
P14
P13
P12
25
26
27
28
29
30
31
32
33
34
35
36
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
P11
P10
PO7/(INT27)
PO6/(INT26)
PO5/(INT25)
PO4/(INT24)
PO3/(INT23)
PO2/(INT22)
PO1/(INT21)
PO0/(INT20)
P37/BZ/RCO
P36/INT2
37
38
39
40
41
42
43
44
45
46
47
48
I/O
I/O
I/O
I/O
I/O
I/O
—
I
I/O
I/O
I/O
I/O
P35/INT1
P34/TO/INT0
P33/EC/SCO
P32/SI
P31/SO
P30/
SCK
A.GND
AVR
P43/AN3
P42/AN2
P41/AN1
P40/AN0
PIN
NO.
I/O SIGNAL
PIN
NO.
I/O SIGNAL
PIN
NO.
I/O SIGNAL
PIN
NO.
I/O SIGNAL
INPUTS
AN0 - AN3
MOD0, MOD1
P10
P11
P12, 13
P15
P16
P33
P34 - P37
RST
X0, X1
X0A, X1A
OUTPUTS
P30
P31
P32
PO0 - PO3
PO4 - PO7
P14
P17
P20, P22, P24, P26
P21, P23, P25, P27
: BATTERY VOLTAGE DETECTING (1CH - 4CH)
: MODE 0, 1
: FULL CHARGE DETECTING
: VOLTAGE DETECTING AT DISCHARGE COMPLETED
: I
Ø
, VH DETECTING
: DISCHARGE RESET SW
: LIFE JUDGING SW
: SERVICE PORT
: BATTERY DETECTING (1CH - 4CH)
: RESET
: CLOCK 0, 1
: SUB CLOCK
: DISCHARGE COUNT
: LIFE DISCHARGE
: LIFE JUDGING MODE DISPLAY
: CHARGE (1CH - 4CH)
: DISCHARGE (1CH - 4CH)
: TRIGGER CHARGE
: MODE DISPLAY
: CHARGE DISPLAY (1CH - 4CH)
: DISCHARGE DISPLAY (1CH - 4CH)
RST
2
X1
6
X0
5
X1A
9
PO7 - PO0
27-34
P17,P16 - P10
18,20-26
8
P27 - 24, P21, P20
10-13,16,17
8
4
4
X0A
8
MOD0 - MOD1
3-4
P22,P23
14,15
OSCILLATOR
(MAX3 MHz)
CLOCK
CONTROL
RAM
(128 x 8-BIT)
F 2 MC-8L
CPU
ROM
(4K x 8-BIT)
LOW POWER
OSCILLATOR
(32.768 kHz)
PORT0/1
C-MOS
INPUT/OUT-
PUT PORT
PORT2
C-MOS
OUTPUT
PORT
N CH OPEN
DRAIN
OUTPUT
PORT
EXTERNAL
BUS
INTERFACE
8-BIT
TIMER
COUNTER
8-BIT
A/D
CONVERTER
TIME BASE
TIMER
RESET
(WDT)
8-BIT
COUNTER
8-BIT
SERIAL
EXTERNAL
INTERRUPTION
INTERNAL BUS
PORT3 C-MOS I/O PORT
P34/TO/INT0
38
P33/EC/SCO
39
P30/SCK
42
P31/SO
41
P32/SI
40
P35/INT1
37
AVR
44
P36/INT2
36
P37/BZ/RCO
35
P43/AN3 - P40/AN0
45-48
MB89131 (FUJITSU)
OUT
1
GND
2
IN
3
3 1
IN OUT
2
GND
POSITIVE VOLTAGE REGULATOR
NJM78L05A (JRC) + 5V(100mA)
UPC78L05J
REFERENCE
VOLTAGE
INPUT
1
OUTPUT
ERROR
AMPLIFIER
OUTPUT PATH TRANSISTOR
3
CONT
4
GND
2
SOA
PROTECTOR
THERMAL
PROTECTOR
STARTER
+
_
EXCESS CURRENT
PROTECTION
4
1
POSITIVE VOLTAGE REGULATOR (500mA)