Technical information

3
MITSUBISHI MICROCOMPUTERS
3806 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
FUNCTIONAL BLOCK DIAGRAM (Package : 80P6N)
CNTR
1
CNTR
0
V
REF
AV
SS
INT
2
to
INT
4
RAM
ROM
CPU
A X Y S
PC
H
PC
L
PS
V
SS
32
RESET
27
V
CC
73 26
CNV
SS
P0(8)
49 50
51 52
53
54 55
56
P1(8)
41
43
45 47
42
44
46
48
P2(8)
33 35 37 3934 36 38
40
P3(8)
57 59
61
6358
60
62
64
P4(8)
20 22 24
28
21
23
25 29
P5(8)
12
14 16 1813 15 17 19
P7(8)
4
6
8
1057
9
11
P8(8)
65 67 69 7166 68
70
72
P6(8)
76 78
2
77
13
74
75
X
IN
30
X
OUT
31
Serial I/O2
(8)
D-A
(8)
D-A
(8)
Reset input
Clock generating circuit
Clock input Clock output
A-D
converter
converter 2
converter 1
Prescaler 12 (8)
Timer 1 (8)
Timer 2 (8)
I/O port P4 I/O port P0I/O port P1I/O port P2I/O port P3
I/O port P5
I/O port P7
I/O port P8
I/O port P6
(8)
79 80
Serial I/O1
(8)
INT
0
to
INT
1
Prescaler X (8)
Timer X (8)
Prescaler Y (8)
Timer Y (8)
CPU
Data bus