English
Language : 

HD6433044 Datasheet, PDF (257/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer
◁
Table 9-1 Port Functions
Port Description
Pins
Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7
Port 1 • 8-bit I/O port
P17 to P10/
• Can drive LEDs A7 to A0
Address output pins (A7 to A0)
Address output (A7 to
A0) and generic input
DDR = 0:
generic input
DDR = 1:
address output
Generic
input/
output
Port 2
• 8-bit I/O port
• Input pull-up
MOS
• Can drive LEDs
P27 to P20/
A15 to A8
Address output pins (A15 to A8)
Address output (A15 to
A8) and generic input
DDR = 0:
generic input
DDR = 1:
address output
Generic
input/
output
Port 3 • 8-bit I/O port
P37 to P30/
D15 to D8
Data input/output (D15 to D8)
Generic
input/
output
Port 4 • 8-bit I/O port
• Input pull-up
MOS
P47 to P40/
D7 to D0
Data input/output (D7 to D0) and 8-bit generic input/output
8-bit bus mode: generic input/output
16-bit bus mode: data input/output
Generic
input/
output
Port 5
• 4-bit I/O port
• Input pull-up
MOS
• Can drive LEDs
P53 to P50/
A19 to A16
Address output (A19 to A16)
Address output (A19 to
A16) and 4-bit generic
input DDR = 0:
generic input
DDR = 1:
address output
Generic
input/
output
Port 6
Port 7
Port 8
• 7-bit I/O port
• 8-bit I/O port
• 5-bit I/O port
• P82 to P80 have
Schmitt inputs
P66/LWR,
P65/HWR,
P64/RD,
P63/AS
P62/BACK,
P61/BREQ,
P60/WAIT
P77/AN7/DA1,
P76/AN6/DA0
P75 to P70/
AN5 to AN0
P84/CS0
Bus control signal output (LWR, HWR, RD, AS)
Generic
input/
output
Bus control signal input/output (BACK, BREQ, WAIT) and
3-bit generic input/output
Analog input (AN7, AN6) to A/D converter, analog output (DA1, DA0)
from D/A converter, and generic input
Analog input (AN5 to AN0) to A/D converter, and generic input
DDR = 0: generic input
DDR = 1 (reset value): CS0 output
Generic
input/
output
P83/CS1/IRQ3,
P82/CS2/IRQ2,
P81/CS3/IRQ1
IRQ3 to IRQ1 input, CS1 to CS3 output, and generic input
DDR = 0 (reset value): generic input
DDR = 1: CS1 to CS3 output
P80/RFSH/IRQ0 IRQ0 input, RFSH output, and generic input/output
IRQ3 to
IRQ0
input and
generic
input/
output
244
 ▷