1.2 Internal Block Diagram
Figure 1-1 shows a block diagram of the H8/3867 Series and H8/3827 Series.
Figure 1-1 Block Diagram
P1
0
/TMOW
P1
1
/TMOFL
P1
2
/TMOFH
P1
3
/TMIG
P1
4
/
IRQ
4
/
ADTRG
P1
5
/
IRQ
1
/TMIC
P1
6
/
IRQ
2
P1
7
/
IRQ
3
/TMIF
P3
0
/PWM
P3
1
/UD
P3
2
/
RESO
P3
3
/SCK
31
P3
4
/RXD
31
P3
5
/TXD
31
P3
6
/AEVH
P3
7
/AEVL
P5
0
/
WKP
0
/SEG
1
P5
1
/
WKP
1
/SEG
2
P5
2
/
WKP
2
/SEG
3
P5
3
/
WKP
3
/SEG
4
P5
4
/
WKP
4
/SEG
5
P5
5
/
WKP
5
/SEG
6
P5
6
/
WKP
6
/SEG
7
P5
7
/
WKP
7
/SEG
8
P4
0
/SCK
32
P4
1
/RXD
32
P4
2
/TXD
32
P4
3
/
IRQ
0
OSC
1
OSC
2
System Clock
OSC
Port 1
Port A
Port 8
Port 7
Port 6
Port 3
Port 4
Port 5
X
1
X
2
Sub Clock
OSC
V
SS
V
SS
V
CC
CV
CC
RES
TEST
H8/300L
CPU
LCD Power
Supply
ROM
(60k/48k/40k/32k
24k/16k)
RAM
(2k/1k)
Timer - A
Timer - C
Timer - F
Timer - G
Asynchronous
counter
Serial
communication
interface 3-1
Serial
communication
interface 3-2
14-bit
PWM
WDT
LCD
Controller
A/D
(10bit)
V
0
V
1
V
2
V
3
PA
3
/COM
4
PA
2
/COM
3
PA
1
/COM
2
PA
0
/COM
1
P8
7
/SEG
32
/CL
1
P8
6
/SEG
31
/CL
2
P8
5
/SEG
30
/DO
P8
4
/SEG
29
/M
P8
3
/SEG
28
P8
2
/SEG
27
P8
1
/SEG
26
P8
0
/SEG
25
P7
7
/SEG
24
P7
6
/SEG
23
P7
5
/SEG
22
P7
4
/SEG
21
P7
3
/SEG
20
P7
2
/SEG
19
P7
1
/SEG
18
P7
0
/SEG
17
P6
7
/SEG
16
P6
6
/SEG
15
P6
5
/SEG
14
P6
4
/SEG
13
P6
3
/SEG
12
P6
2
/SEG
11
P6
1
/SEG
10
P6
0
/SEG
9
Port B
AV
CC
AV
SS
PB
0
/AN
0
PB
1
/AN
1
PB
2
/AN
2
PB
3
/AN
3
PB
4
/AN
4
PB
5
/AN
5
PB
6
/AN
6
PB
7
/AN
7
5