HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 20
HD6433044
Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6433044.pdf
(867 pages)
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1.2 Block Diagram
Figure 1-1 shows an internal block diagram.
P8 /RFSH/IRQ
P8 /CS /IRQ
P8 /CS /IRQ
P8 /CS /IRQ
Note: * V
0
V
3
2
1
P6 /BREQ
PP
P6 /BACK
P6 /WAIT
P6 /HWR
P6 /LWR
P8 /CS
1
*
P6 /RD
2
P6 /AS
0
EXTAL
5
1
2
3
/RESO
6
4
STBY
XTAL
4
3
MD
MD
MD
RES
NMI
ø
2
1
0
0
3
2
1
0
PP
function is provided only for the flash memory version.
Port B
Figure 1-1 Block Diagram
Interrupt controller
16-bit integrated
controller (TPC)
(masked ROM,
PROM, or flash
Programmable
timing pattern
timer unit
memory)
ROM
RAM
(ITU)
Port A
H8/300H CPU
5
Port 3
DMA controller
Serial communication
(SCI)
controller
(DMAC)
Refresh
Watchdog timer
A/D converter
D/A converter
Address bus
Data bus (upper)
Data bus (lower)
interface
(WDT)
2 channels
Port 4
Port 7
P5 /A
P5 /A
P5 /A
P5 /A
P2 /A
P2 /A
P2 /A
P2 /A
P2 /A
P2 /A
P2 /A
P2 /A
P1 /A
P1 /A
P1 /A
P1 /A
P1 /A
P1 /A
P1 /A
P1 /A
P9 /SCK /IRQ
P9 /SCK /IRQ
P9 /RxD
P9 /RxD
P9 /TxD
P9 /TxD
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
5
4
3
2
1
0
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
0
1
0
1
0
5
4
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