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MITSUBISHI MICROCOMPUTERS
38C8 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table 5 List of I/O port function
Pin
P00–P07
P10/AN4–
P13/AN7
Name
Port P0
Port P1
Input/Output
Input/Output,
individual bits
P14–P17
P20–P27
Port P2
Input/Output,
individual bits
P30/AN0–
P33/AN3
P40/INT0
Port P3
Port P4
Input/Output,
individual bits
Input
P41/INT1
P42/CNTR0/
BEEP+
P43/CNTR1/
BEEP-
P44/RxD
P45/TxD
P46/SCLK
P47/SRDY
COM0–COM7, Common
COM8–COM15
SEG0/COM16– Segment/
SEG7/COM23, Common
SEG60/COM31–
SEG67/COM24
SEG8–SEG59 Segment
Input/Output,
individual bits
Output
I/O format
CMOS 3-state output
CMOS compatible input
level
CMOS 3-state output
CMOS 3-state output
CMOS compatible input
level
CMOS compatible input
level
CMOS 3-state output
LCD common output
Non-port function
Key input (key-on
wake-up) interrupt in-
put
A-D converter input
External interrupt in-
put
Timer X function I/O
Timer Y function input
Serial I/O funtion
I/O
Related SFRs
PULL register A
PULL register A
A-D control register
PULL register A
PULL register A
Interrupt control register 2
PULL register A
A-D control register
PULL register B
Interrupt edge select
register
PULL register B
Timer X mode register
PULL register B
Timer Y mode register
PULL register B
Serial I/O control register
Serial I/O status register
UART control register
LCD mode register
Ref. No.
(1)
(2)
(1)
(1)
(2)
(3)
(1)
(4)
(5)
(6)
(7)
(8)
(9)
LCD segment output
LCD common ouput
LCD segment output
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