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M30220

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

Unddeevrelopment

Tentative Specifications REV.E

Specifications in this manual are tentative and subject to change.

Mitsubishi microcomputers

M30220 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Pin Description

Pin Description

Pin name

VCC, VSS

CNVSS

RESET

Signal name I/O

Function

Power supply

input

Supply 2.7 to 5.5 V to the VCC pin. Supply 0 V to the VSS pin.

CNVSS

I Connect it to the VSS pin.

Reset input

I A “L” on this input resets the microcomputer.

XIN

XOUT

XCIN

XCOUT

Clock input

Clock output

Clock input

Clock output

I These pins are provided for the main clock generating circuit.

O

Connect a ceramic resonator or crystal between the XIN and the

XOUT pins. To use an externally derived clock, input it to the XIN

pin and leave the XOUT pin open.

I These pins are provided for the sub clock generating circuit.

Connect a ceramic resonator or crystal between the XCIN and the

O XCOUT pins. To use an externally derived clock, input it to the

XCIN pin and leave the XCOUT pin open.

AVCC

AVSS

Analog power

supply input

Analog power

supply input

This pin is a power supply input for the A-D converter. Connect

it to VCC.

This pin is a power supply input for the A-D converter. Connect

it to VSS.

VREF

P00 to P07

P10 to P17

P20 to P27

P30 to P35

P40 to P47

P50 to P57

P60 to P67

Reference

voltage input

I This pin is a reference voltage input for the A-D converter.

I/O port P0

I/O port P1

I/O port P2

I/O 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. Pins in this port also use as LCD segment

output and real time port output.

I/O This is an 8-bit I/O port equivalent to P0. Pins in this port also

function as input pins for the key input interrupt function and real

time port output.

I/O This is an 8-bit I/O port equivalent to P0. Pins in this port also

function as input pins for the key input interrupt function and real

time port output.

I/O port P3

I/O port P4

I/O port P5

I/O port P6

I/O This is a 6-bit I/O port equivalent to P0. P30 to P33 also function

as input pins for the key input interrupt function.

I/O This is a 8-bit I/O port equivalent to P0. Pins in this port also

function as timer A0 to A3 I/O pins, INT4 input pin as selected

by software.

I/O This is a 8-bit I/O port equivalent to P0. Pins in this port also

function as timer B0 to B5 and INT3 input pins, CKOUT output

pin as selected by software.

I/O This is an 8-bit I/O port equivalent to P0. Pins in this port also

function as UART0 and UART1 I/O pins as selected by

software.

6

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