
deveopmen
Description
Rev.B2 for proof reading
Mitsubishi Microcomputers
M32C/83 group 
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER 
16
Table 1.1.11.   Pin description (3/4)
Function
I/O port
Sub clock input
UART port
Description
I/O
I
O
I/O
I/O
I/O
I/O
I
I/O type
P8
0
-P8
4
, P8
6
, P8
7
X
CIN
INPC/ISRxD/BE
IN
Pin name
P8
P9
Port
I/O port
Intelligent I/O port
P9
0
 to P9
7
This is a 7-bit I/O port equivalent to P0.  
P8
6
 and P8
7
 function as I/O ports for the sub clock 
generating circuit by software. Connect a crystal between 
the X
CIN
 and the X
COUT
 pins. 
When using PLL frequency synthesizer, connect P8
7
 to  a 
low-pass filter.  To stabilize PLL frequency, connect P8
6
 to 
Vss.
P9
0
 to P9
3
 are I/O ports for UART3.
P9
4
 to P9
7
 are I/O ports for UART4.
I
This is an 8-bit I/O port equivalent to P0.  
I/O
INPC is an input port for time measurement function.
ISRxD/BE
IN 
is receive data input port for intelligent I/O 
communication.
Input port and input ports for NMI interrupt.
CTS/RTS/SS
CLK
RxD/SCL/STxD
TxD/SDA/SRxD
DA0, DA1
Timer A port
Three phase motor 
control output port
External interrupt input 
port
P8
0
 to P8
1
 are I/O ports for timer A4. 
P8
0
 and P8
1
 are U phase output ports.
O
I
TA4
OUT
TA4
IN
P8
2
 to P8
4
 are external interrupt input ports. 
I
INT
0
 to INT
2
Input port
P8
5
/NMI
I
TB0
IN
 to TB4
IN
Timer B port
P9
0
 to P9
4
 are input port for timer B4. 
O
D-A output port
P9
3
 and P9
4
 are D-A output ports. 
I
I
ANEX1, ANEX2
AD
TRG
OUTC/IE
OUT
A-D related port
P9
5
 to P9
6
 are expanded input port for A-D converter.
P9
7
 is A-D trigger input port.
OUTC is an output port for waveform generation function.
IE
OUT 
is transmit data output port for intelligent I/O 
communication. 
IE
IN 
is receive data input port for intelligent I/O 
communication.
Intelligent I/O port
IE
IN
Key input interrupt port
I
I/O
I
KI
0
 to KI
3
AN
0
 to AN
7
P10
I/O port
Analog input port
P10
0
 to P10
7
This is an 8-bit I/O port equivalent to P0.
P10
4
 to P10
7
 are key input interrupt ports. 
P10
0
 to P10
7
 are analog input ports for A-D convertor. 
The protect register prevents a false write to P9 direction register and function select register A3.
U, U
I/O
I
X
COUT
O
Sub clock output
V
COUT
O
Low-pass filter connect 
pin for PLL frequency 
synthesizer