Pin Description
Unde
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
7
V
CC
, V
SS
CNV
SS
X
IN
X
OUT
AV
CC
AV
SS
V
REF
P0
0
to P0
7
P1
0
to P1
7
P3
0
to P3
5
P4
0
to P4
5
Signal name
Power supply
input
CNV
SS
Reset input
Clock input
Clock output
Analog power
supply input
Reference
voltage input
I/O port P0
I/O port P1
I/O port P3
I/O port P4
Supply 2.7 to 5.5 V to the V
CC
pin. Supply 0 V to the V
SS
pin.
Function
Connect it to the V
SS
pin.
A “L” on this input resets the microcomputer.
These pins are provided for the main clock generating circuit.
Connect a ceramic resonator or crystal between the X
IN
and the
X
OUT
pins. To use an externally derived clock, input it to the
X
IN
pin and leave the X
OUT
pin open.
This pin is a power supply input for the A-D converter. Connect
it to V
CC
.
This pin is a power supply input for the A-D converter. Connect
it to V
SS
.
This pin is a reference voltage input for the A-D converter.
This is an 8-bit CMOS I/O port. It has an input/output port
direction register that allows the user to set each pin for input or
output individually. When set for input, the user can specify in
units of four bits via software whether or not they are tied to a
pull-up resistor.
This is an 8-bit I/O port equivalent to P0.
This is a 6-bit I/O port equivalent to P0.
This is a 6-bit I/O port equivalent to P0. The P4
0
pin is shared
with timer A0 input and serial I/O output TxD1. The P4
1
pin is
shared with timer A0 output. The P4
2
pin is shared with serial
I/O input RxD1. The P4
3
pin is shared with external interrupt
INT0 and timer X0 input/output TX0
INOUT
. The P4
4
pin is
shared with external interrupt INT1 and timer X1 input/output
TX1
INOUT
. The P4
5
pin is shared with timer X2 input/output
TX2
INOUT
.
Pin name
Input
Input
Input
Output
Input
Input/output
Input/output
I/O type
Analog power
supply input
Input/output
Input/output
RESET
I/O port P5
Input/output
Input/output
Input/output
I/O port P6
I/O port P7
P5
0
to P5
4
P6
0
to P6
7
P7
0
to P7
1
This is a 5-bit I/O port equivalent to P0. The P5
0
, P5
1
, P5
2
, and
P5
3
pins are shared with serial I/O pins TxD
0
, RxD
0
, CLK
0
,
and CLKS. The P5
4
pin is shared with clock output CLK
OUT
.
Also, these pins are shared with analog input pins AN
50
through AN
54
.
This is an 8-bit I/O port equivalent to P0. These pins are shared
with analog input pins AN
0
through AN
7
.
This is a 2-bit I/O port equivalent to P0 . These pins are used
for input/output to and from the oscillator circuit for the clock.
Connect a crystal oscillator between the X
CIN
and the X
COUT
pins.
Pin Description