2-92
BVW-55
IC
UPD78P014GC-AB8 (NEC)
PIN
NO.
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
I/O
I/O
I/O
I/O
I/O
I/O
I/O
SIGNAL
P30/TO0
P31/TO1
P32/TO2
P33/TI1
P34/TI2
P35/PCL
P36/BUZ
P37
GND
P40/AD0
P41/AD1
P42/AD2
P43/AD3
P44/AD4
P45/AD5
P46/AD6
PIN
NO.
I/O
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
SIGNAL
P47/AD7
P50/A8
P51/A9
P52/A10
P53/A11
P54/A12
P55/A13
GND
P56/A14
P57/A15
P60
P61
P62
P63
P64/
RD
P65/
WR
PIN
NO.
I/O
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
I/O
I/O
I
I
I/O
I/O
I/O
—
O
I
—
—
I
—
I
I
SIGNAL
P66/
WAIT
P67/ASTB
RESET
P00/INTP0/TI0
P01/INTP1
P02/INTP2
P03/INTP3
V
DD
X2
X1
V
PP
XT2
P04/XT1
A
GND
P10/ANI0
P11/ANI1
PIN
NO.
I/O
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
I
I
I
I
I
I
—
—
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
SIGNAL
P12/ANI2
P13/ANI3
P14/ANI4
P15/ANI5
P16/ANI6
P17/ANI7
AV
DD
AV
REF
P20/SI1
P21/SO1
P22/
SCK1
P23/STB
P24/BUSY
P25/SI0/SB0
P26/SO0/SB1
P27/
SCK0
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
8-BIT SINGLE CHIP MICROCOMPUTER WITH ONE TIME PROM
—TOP VIEW—
35
41
42
44
36
37
38
39
45
56
47
48
49
50
51
52
53
54
57
58
59
60
61
62
63
64
RESET
X2
X1
XT2
P00/INTP1/TI0
P01/INTP1
P02/INTP2
P03/INTP3
P04/XT1
AV
REF
P10/ANI0
P11/ANI1
P12/ANI2
P13/ANI3
P14/ANI4
P15/ANI5
P16/ANI6
P17/ANI7
P20/SI1
P21/SO1
P22/
SCK1
P23/STB
P24/BUSY
P25/SI0/SB0
P26/SO0/SB1
P27/
SCK0
P30/TO0
P31/TO1
P32/TO2
P33/TI1
P34/TI2
P35/PCL
P36/BUZ
P37
P40/AD0
P41/AD1
P42/AD2
P43/AD3
P44/AD4
P45/AD5
P46/AD6
P47/AD7
P50/A8
P51/A9
P52/A10
P53/A11
P54/A12
P55/A13
P56/A14
P57/A15
P60
P61
P62
P63
P64/
RD
P65/
WR
P66/
WAIT
P67/ASTB
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
25
26
27
28
29
30
31
32
33
34
INPUTS
ANI0 - ANI7
AV
REF
BUSY
INTP0 - INTP3
P00, P04
P10 - P17
RESET
SI0, SI1
TI0 - TI2
WAIT
X1, X2
XT1, XT2
OUTPUTS
A8 - A15
ASTB
BUZ
PCL
RD
SO0, SO1
STB
TO0 - TO2
WR
INPUTS/OUTPUTS
AD0 - AD7
P01 - P03
P20 - P27
P30 - P37
P40 - P47
P50 - P57
P60 - P67
SB0, SB1
SCK0, SCK1
: ANALOG
: ANALOG REFERENCE VOLTAGE
: BUSY
: INTERRUPT FROM PERIPHERALS
: PORT0
: PORT1
: RESET
: SERIAL
: TIMER
: WAIT
: CRYSTAL (MAIN SYSTEM CLOCK)
: CRYSTAL (SUB SYSTEM CLOCK)
: ADDRESS BUS
: ADDRESS STROBE
: BUZZER CLOCK
: PROGRAMMABLE CLOCK
: READ STROBE
: SERIAL
: STROBE
: TIMER
: WRITE STROBE
: ADDRESS/DATA BUS
: PORT0
: PORT2
: PORT3
: PORT4
: PORT5
: PORT6
: SERIAL BUS
: SERIAL CLOCK
16-BIT TIMER/
EVENT
COUNTER
1
36
TO0
TI0
2
4
TO1
TI1
3
5
TO2
TI2
57
58
59
60
61
SI1
SO1
SCK1
STB
BUSY
56
AV
REF
8-BIT TIMER/
EVENT
COUNTER 1
8-BIT TIMER/
EVENT
COUNTER 2
WATCHDOG
TIMER
WATCH
TIMER
SERIAL
INTERFACE 0
SERIAL
INTERFACE 1
INTERRUPT
CONTROL
36 - 39
INTP0 - INTP3
47 - 54
ANI0 - ANI7
PORT0
EXTERNAL
ACCESS
PSW SP
BUZZER
OUTPUT
CLOCK
OUTPUT
CONTROL
CLOCK
DIVIDER
STANDBY
CONTROL
CLOCK
GENERATOR
SUB MAIN
37 - 39
P01 - P03
PORT1
47 - 54
P10 - P17
PORT2
57 - 64
P20 - P27
PORT3
1 - 8
P30 - P37
PORT4
10 - 17
P40 - P47
PORT5
18 - 23,
25, 26
P50 - P57
PORT6
27 - 34
P60 - P67
10 - 17
AD0 - AD7
18 - 23,
25, 26
A8 - A15
31
32
33
34
RD
WR
WAIT
ASTB
BUZ
62
63
64
SI0/SB0
SO0/SB1
SCK0
A/D
CONVERTER
35, 45
P00 - P04
PCL XT1 XT2 X1 X2
7 6 45 44 42 41
RESET
35
ALU
PROGRAM
COUNTER
ONE TIME
PROM
32,768 x 8-BIT
DECODE
AND
CONTROL
RAM
DATA
MEMORY
1,024 x 8-BIT
GENERAL
REG.
1OUT 1
OUT 2
NC
NC
GND
V
DD
D1
IN
R
FB
IN
V
REF
IN
D7
IN
(LSB)
D6
IN
D5
IN
D2
IN
D3
IN
D4
IN
V
REF
D0
IN
(MSB)
2
3
4
5
6
7
8
15
RR R
10 K
2
1
16
11
D7
6
D2
5
D1
4
D0
2R 2R2R2R2R
S-1 S-2 S-3 S-8
OUT 2
OUT 1
R
FB
16
4
5
6
7
8
9
10
11
15
16
1
2
OUT 1
OUT 2
D0
D1
D2
D3
D4
D5
D6
D7
V
REF
R
FB
15
14
13
12
11
10
9
MP7523
XRD7523
: R = 10 K
: R = 20 K
C-MOS 8-BIT D/A CONVERTER
—TOP VIEW—
XRD7523AID-JTR (EXAR)
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