Sony HB-501P Service Manual page 57

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a
UPD780C-1 (NEC)
N-MOS 8-BIT MICROPROCESSOR
— TOP VIEW —
A11 out m
A12 OUT 2
A13 OUT 3
A14 out [4j
A15 OUT 5
IN
D4 I/O m
D3 I/O 8
D5 I/O 9
D6 I/O 10
D2 I/O 12
D7 I/O 13
DO I/O 0
01 I/O 1
I NT m 16
NMI
in
|17
()
HALT
out
[18
MREQ OUT 19
IORQ OUT
o
Vdd
< + 5V)
m
A10 OUT
A9 OUT
A 8 OUT
37 A 7 out
24
GND
p6 A6 OUT
35 A5 OUT
A4 out
A3 out
A 2 OUT
1 A1 OUT
AO OUT
RFSH
OUT
27 M1 OUT
RESET in
25 BUSRQ IN
33
WAIT
in
BUSAK OUT
2 WRITE OUT
21 READ OUT
25.
17.
WAIT Ml
AO
A 1
A 2
A3
A4
A 5
A6
A 7
<P
A 8
A 9
A10
All
A \2
A 13
A 14
A 15
BUSRQ
BUSAK
DO
INT D l
NMI
D 2
D 3
D 4
D 5
D 6
D 7
MREQ
IORQ
READ
WRITE
RFSH
HALT L
RESET [
30
31_
_32
33
34
35
36
37
38
39
40
1
2_
3
4
5
23
14
15
12
8
_
7
9
10
13^
19
,20
21
22
28
18
*
1
•
t
I
■*»
I
INTERNAL DATA BUS
WAIT
INT
NMI
RESET
BUS RO
INDEX
COUNTER
GENERAL-
PURPOSE
REGISTER
STACK
POINTER
INTERRUPT
PAGE VECTOR
REGISTER
PROGRAM
COUNTER
MEMORY
REFRESH
REGISTER
3
INSTRUCTION
DECODER
AND
MACHINE CYCLE
ENCODER
18^ 23
HALT
27
Ml
r
TT
♦
BUSAK
19
t
MREO
I 20 J
IORQ
21
22^ 28
WRITE
V
t
READ
I
RFSH
16-BIT
ADDRESS
BUS
CONTROL
TEMP. REG. ; TEMPORARY REGISTER
0
A0-A15
BUSAK •
BUSRQ
D0-D7
HALT
INT
IORQ
Ml
MREQ
NM I
READ
RFSH
WRITE
CLOCK
3-STATE ADDRESS OUTPUT
BUS ACKNOWLEDGE
BUS REQUEST
3-STATE DATA INPUT/OUTPUT
HALT STATE
INTERRUPT REQUEST
3-STATE I/O REQUEST
MACHINE CYCLE 1
3-STATE MEMORY REQUEST
NON-MASKABLE INTERRUPT
( DOWN EDGE TRIGGER)
3-STATE MEMORY READ
REFRESH
3-STATE MEMORY WRITE
NJM78M ? ?A (JRC)
VOLTAGE REGULATOR
— FRONT VIEW —
INPUT COMMON OUTPUT
(3) (2) (1)
5V NJM78M05A
6V NJM78M06A
8V NJM78M08A
9V NJM78M09A
12V NJM78M12A
15V NJM78M15A
18V NJM78M18A
20V NJM78M20A
24V NJM78M24A
INPUT OUTPUT
COMMON
NJM79L ? ?A (JRC)
NEGATIVE VOLTAGE REGULATOR (100mA)
— FRONT VIEW —
COMMON
(1
)
INPUT
(
2
)
OUTPUT
VOLTAGE P?
t •
- 3V
03
- 5V 05
- 6V 06
- 8V 08
— 9V
09
-12V 12
-15V 15
-18V
18
-24V
24
OUTPUT
(3)
IlNPUT OUTPUT
COMMON
1
SI-3052V (SANKEN)
POSITIVE VOLTAGE REGULATOR (2A)
til (2) 13)
5 V S I —3052V
12V SI —31 22 V
:: —v: f r
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