HD643303x Hitachi, HD643303x Datasheet - Page 20

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

1.2 Block Diagram
Figure 1-1 shows an internal block diagram.
P6
Note: PROM version is available only in the H8/3032 Series.
P8
P8
P8
P8
P6
P6
P6
0
EXTAL
3
2
1
0
RESO
/WAIT
STBY
XTAL
/IRQ
/IRQ
/IRQ
/IRQ
5
4
RES
3
MD
MD
/WR
NMI
/RD
/AS
ø
1
0
3
2
1
0
Port B
controller (TPC)
timer-pulse unit
Programmable
timing pattern
(or masked
Figure 1-1 Block Diagram
integrated
PROM*
ROM)
16-bit
(ITU)
RAM
H8/300H CPU
Port A
5
(SCI)
communication
A/D converter
Watchdog
controller
Interrupt
interface
(WDT)
Serial
timer
Data bus (upper)
Data bus (lower)
Address bus
1 channel
Port 3
Port 7
P5
P5
P5
P5
P2
P2
P2
P2
P2
P2
P2
P2
P1
P1
P1
P1
P1
P1
P1
P1
P9
P9
P9
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
4
2
0
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/A
/SCK/IRQ
/RxD
/TxD
15
16
17
18
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
4