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1. Overview
1.2
Internal Block Diagram
Figures 1.1 and 1.2 show internal block diagrams of the H8/3857 Group and H8/3854 Group.
P1
/TMOW
0
P1
/TMOFL
1
P1
/TMOFH
2
P1
3
P1
/PWM
4
P1
/IRQ
/TMIB
5
1
P1
/IRQ
/TMIC
6
2
P1
/IRQ
/TMIF
7
3
P2
/IRQ
/ADTRG
0
4
P2
/UD
1
P2
2
P2
3
P2
4
P2
5
P2
6
P2
7
P3
/SCK
0
1
P3
/SI
1
1
P3
/SO
2
1
P3
3
P3
4
P3
5
P3
6
P3
7
P4
/SCK
0
P4
/RXD
1
P4
/TXD
2
P4
/IRQ
3
V5OUT
V4OUT
V3OUT
V2OUT
V1OUT
V4
V34
V3
V
LCD
Rev.3.00 Jul. 19, 2007 page 6 of 532
REJ09B0397-0300
3
0
Figure 1.1 H8/3857 Group Internal Block Diagram
CPU
(8-bit)
Data bus (lower)
FLASH/
MASK
RAM
ROM
Timer A
SCI1
Timer B
SCI3
Timer C
A/D
Timer F
14-bit
PWM
Port 9
Port A
LCD
· · ·
· · ·
P5
/WKP
7
7
P5
/WKP
6
6
P5
/WKP
5
5
P5
/WKP
4
4
P5
/WKP
3
3
P5
/WKP
2
2
P5
/WKP
1
1
P5
/WKP
0
0
PB
/AN
7
7
PB
/AN
6
6
PB
/AN
5
5
PB
/AN
4
4
PB
/AN
3
3
PB
/AN
2
2
PB
/AN
1
1
PB
/AN
0
0
AV
CC
AV
SS
Internal
I/O port
VLOUT
C
–
1
C
+
1
C
–
2
C
+
2
V
Ci
· · ·
· · ·
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