42
12
13
14
15
16
17
18
19
20
21
22
PE1
PE0
VDD
OSC2
OSC1
VSS
PB1
PC2/INV2I
PB0
PA3
PB3
PA1
PB2
PC3/INV2O
PO0
PD3/INV4O
PD2/INV4I
PO3
PO2
PO1
PD1/INV30
PD0/INV3I
PA0
P93
P92
P91
P90
P83
P82
P81
P80
P73
P72
P71
P70
P40/INV0I
P41/INV0O
TEST
23
24
25
26
27
28
29
30
31
32
P53/INT2
P52
P51
P50
P43/INV1O
P42/INV1I
P62/SCK1/DT
P63/PIN1
P60/SI1/ML
1
2
3
4
5
6
7
8
9
10
11
52
51
50
49
48
PA2
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
64
63
62
61
60
59
58
57
56
55
PC1
PC0
53
54
P21/SO0
P20/SI0
P13
P12
P11
P10
P31/POUT0
P32/POUT1
P23/INT0
P22/SCK0
P30/INT1
RES
P33/HOLD
P61/SO1/DP
ROM
12K/16K/
8KB
PC
PRESCALER
MPX
MPX
INTERRUPT
CONTROL
DTMF
GEN.
SYSTEM
CONTROL
TIMER
0
SERIAL
I/O 0
MPX
TIMER
1
SERIAL
I/O 1
RAM
STACK
(512W)
SP
EMR
DPH
DPL
DPX
DPY
E
A
FLAG
C
Z
ALU
PC
PD
PE
P7
P8
P9
PA
PB
P6
P5
P4
P3
P2
P1
P0
INT3, INT4, INT5
IC302
LC662516A-4L37 (BASE MAIN board)