M30221 Просмотр технического описания (PDF) - Renesas Electronics

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M30221

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Renesas Electronics 

Pin Description

Mitsubishi microcomputers

M30221 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Pin Description

Pin name

P70 to P76

P77

Signal name

I/O port P7

I/O

Function

I/O P70 to P76 are I/O ports equivalent to P0 (P70 and P71 are N

channel open-drain output).

The P70, P71, and P72 pins are shared with TxD2, RxD2, and

CLK2, respectively. The P73 is shared with CTS2 and RTS2. The

P74, P75 and P76 pins are shared with INT0, INT1 and INT2,

respectively.

I P77 is an input-only port that also functions for NMI.

P80 to P82,

P84, P86

I/O port P8

I/O This is a 5-bit I/O port equivalent to P0. The P80 pin is shared

with timer A4 output and INT5 input . The P81 pin is shared with

timer A4 input and INT5 input. The P82 pin is shared with timer

A5 output. The P84 pin is shared with timer A6 output. The P86

pin is shared with timer A7 output.

P90 to P96 I/O port P9

I/O This is an 7-bit I/O port equivalent to P0. Pins in this port also

function as A-D converter input pins.

P100 to P103 I/O port P10

I/O This is an 4-bit I/O port equivalent to P0. Pins in this port also

function as SEG output for LCD.

P110 to P117 I/O port P11

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

function as SEG output for LCD.

P120 to P125 I/O port P12

I/O This is an 6-bit I/O port equivalent to P0. Pins in this port also

function as SEG output for LCD and real time port output.

P130, P131

SEG2 to

SEG15

I/O port P13 I/O

Segment output O

This is an 2-bit I/O port equivalent to P0. P130 pins in this port

also function as D-A converter output pins or start trigger for A-D

input pins. P131 pins in this port also function as D-A converter

output pins.

Pins in this port function as SEG output for LCD drive circuit.

COM0 to

COM3

VL1 to VL3

Common

output

Power supply

input for LCD

O Pins in this port function as common output for LCD drive circuit.

Power supply input for LCD drive circuit.

C1, C2

Step-up

condenser

connect port

Pins in this port function as external pin for LCD step-up

condenser. Connect a condenser between C1 and C2.

7

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