11
MITSUBISHI MICROCOMPUTERS
3807 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Table. 4. List of I/O port functions (1)
Pin
Name
Input/Output
I/O Format
Non-Port Function
Related SFRs
Ref.No.
P00–P07
Port P0
Input/output,
CMOS compatible input level Address low-order byte output
CPU mode register
(1)
P10–P17
Port P1
individual bits
CMOS 3-state output
Address high-order byte output Pull-up control register
P20–P27
Port P2
CMOS/TTL input level
Data bus I/O
CPU mode register
CMOS 3-state output
Pull-up control register
Port P2P3 control register
P30/RTP6,
Port P3
CMOS compatible input level Real time port output
CPU mode register
(2)
P31/RTP7
CMOS 3-state output
Real time port control register
P32
CMOS/TTL input level
Control signal input
CPU mode register
(3)
CMOS 3-state output
Port P2P3 control register
P33
CMOS compatible input level Control signal output
CPU mode register
CMOS 3-state output
P34/CKOUT
Clock output,
φ output
CPU mode register
(4)
Port P2P3 control register
P35–P37
Control signal I/O
CPU mode register
(3)
P40/XCOUT,
Port P4
Sub-clock generating circuit
CPU mode register
(5)
P41/XCIN
(6)
P42/INT0,
External interrupt input
Interrupt edge selection register
(7)
P43/INT1
Timer X, Timer Y function input
P44/RXD,
Serial I/O1 function I/O
Serial I/O1 control register
(8)
P45/TXD,
UART control register
(9)
P46/SCLK1,
(10)
P47/SRDY1
(11)
P50/TOUT
Port P5
Timer 2 output
Timer 123 mode register
(12)
P51/SCMP2/
External interrupt input
Interrupt edge selection register
(22)
INT2
Serial I/O2 function I/O
Serial I/O2 control register
P52/INT3,
External interrupt input
Interrupt edge selection register
(7)
P53/INT4
Real time port trigger input (INT4)
P54/CNTR0
Timer X, Timer Y function I/O
Timer X mode register
(13)
P55/CNTR1
Timer Y mode register
P56/DA1,
D-A conversion output
D-A control register
(14)
P57/DA2
P60/AN5—
Port P6
A-D conversion input
A-D control register
(15)
P62/AN7
P63/CMPIN/
Input
CMOS compatible input level Analog comparator input pin
A-D control register
(16)
AN8
A-D conversion input
P64/CMPREF/
Analog comparator reference
AN9
voltage input pin
A-D conversion input
P65/DAVREF/
Input/output,
CMOS compatible input level D-A converter power source
A-D control register
(17)
AN10
individual bits
CMOS 3-state output
input
A-D conversion input
P70/SIN2,
Port P7
Serial I/O2 function I/O
Serial I/O2 control register
(18)
P71/SOUT2,
(19)
P72/SCLK2
(20)
P73/SRDY2/
Serial I/O2 function I/O
Serial I/O2 control register
(21)
ADT/AN0
A-D trigger input
A-D control register
A-D conversion input
P74/AN1—
A-D conversion input
A-D control register
(15)
P77/AN4