
1-4
HARDWARE
3800 GROUP USER’S MANUAL
FUNCTIONAL BLOCK
Fig. 3 Functional block diagram
FUNCTIONAL
BLOCK
DIA
GRAM
(P
ac
ka
g
e
:
64P4B)
FUNCTIONAL BLOCK
CNTR
1
CNTR
0
INT
2
to
INT
5
RAM
ROM
CPU
A
X
Y
S
PC
H
PC
L
PS
V
SS
32
RESET
27
V
CC
1
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
39
34
36
38
40
P3(8)
57
59
61
63
58
60
62
64
P4(8)
20
22
24
28
21
23
25
29
P5(8)
12
14
16
18
13
15
17
19
P7(2)
3
2
P6(8)
4
6
10
59
1
X
IN
30
X
OUT
31
Reset
input
Clock
generating
circuit
Clock
input
Clock
output
Prescaler
12
(8)
Timer
1
(8)
Timer
2
(8)
I/O
port
P4
I/O
port
P0
I/O
port
P1
I/O
port
P2
I/O
port
P3
I/O
port
P5
I/O
port
P7
I/O
port
P6
7
8
Serial
I/O(8)
INT
0,
INT
1
Prescaler
X
(8)
Timer
X
(8)
Prescaler
Y
(8)
Timer
Y
(8)
CPU
Data
bus