Table 7.1 Port Functions
Expanded
Modes
Single-Chip
Mode
Port
Description
Pins
Mode 1
Mode 2
Mode 3
Port 1
• 8-bit I/O port
• Can drive LEDs
P17 to P10/A7 to A0
Lower address
output (A7 to A0)
Lower address
output (A7 to A0)
or general input
General
input/output
• Built-in input
pull-ups
Port 2
Port 3
• 8-bit I/O port
P27 to P20/A15 to A8
Upper address
output (A15 to A8)
Upper address
output (A15 to A8)
or general input
General
input/output
• Can drive LEDs
• Built-in input
pull-ups
• 8-bit I/O port
P37 to P30/
D7 to D0/
HDB7 to HDB0
Data bus
(D7 to D0)
Data bus
(D7 to D0)
HIF data bus
(HDB7 to
HDB0) or
general input/
output
• Built-in input
pull-ups
• HIF data bus
Port 4
• 8-bit I/O port
P47/PW1
PWM timer 0/1 output (PW0, PW1), or general
input/output
P46/PW0
P45/TMRI1/HIRQ12
P44/TMO1/HIRQ1
P43/TMCI1/HIRQ11
P42/TMRI0
8-bit timer 1 input/output (TMCI1, TMO1, TMRI1), host
processor interrupt request output from HIF (HIRQ11,
HIRQ1, HIRQ12), or general input/output
8-bit timer 0 input/output (TMCI0, TMO0, TMRI0) or
general input/output
P41/TMO0
P40/TMCI0
Port 5
Port 6
• 3-bit I/O port
• 8-bit I/O port
P52/SCK0
Serial communication interface 0 input/output (TxD0,
RxD0, SCK0) or general input/output
P51/RxD0
P50/TxD0
P67/KEYIN7/IRQ7
P66/KEYIN6/FTOB/IRQ6
P65/KEYIN5/FTID
P64/KEYIN4/FTIC
P63/KEYIN3/FTIB
P62/KEYIN2/FTIA
P61/KEYIN1/FTOA
P60/KEYIN0/FTCI
P77/AN7/DA1
16-bit free-running timer input/output (FTCI, FTOA,
FTIA, FTIB, FTIC, FTID, FTOB), key-sense interrupt
input (KEYIN7 to KEYIN0), external interrupt input (IRQ7,
IRQ6), or general input/output
• Built-in input
pull-ups
• Key-sense
interrupt inputs
Port 7
• 8-bit I/O port
Analog input to A/D converter (AN7, AN6), analog output
from D/A converter (DA1, DA0), or general input
P76/AN6/DA0
P75 to P70/
AN5 to AN0
Analog input to A/D converter (AN5 to AN0) or general
input
102
HITACHI [ HITACHI SEMICONDUCTOR ]
