32C80 datasheet(11/60 Pages) RENESAS

11 / 60 page

1. Overview

page 11

VREF

AN0 to AN7

___________

ADTRG

ANEX0

ANEX1

DA0, DA1

ISCLK0

ISCLK1

ISTxD0

ISTxD1

ISRxD0

ISRxD1

P00 to P07(1)

P10 to P17(2)

P20 to P27(1)

P30 to P37(1)

P40 to P47(1)

P50 to P57(1)

P60 to P67

P70 to P77

P90 to P97

P100 to P107

P80 to P84,

P86, P87

P85

Reference

voltage input

A/D converter

D/A converter

Intelligent I/O

communication

function

I/O port

VCC1

VCC2

VCC1

Applies reference voltage for the A/D converter and D/A converter

Analog input pins for the A/D converter

Input pin for an external A/D trigger

Extended analog input pin for the A/D converter and output pin in

external op-amp connection mode

Extended analog input pin for the A/D converter

Output pin for the D/A converter

Inputs and outputs clock for the intelligent I/O communication

fucntion

Outputs data for the intelligent I/O communication fucntion

Inputs data for the intelligent I/O communication fucntion

I/O ports fro CMOS. Each port can be programmed for nput or

output under the control of the direction register. An input port

can be set, by program, for a pull-up resistor available or for no

pull-up resistor available in 4-bit units

I/O ports having equivalent functions to P0

(P70 and P71 are ports for the N-channel open drain output.)

I/O ports having equivalent functions to P0

_______

Shares a pin with NMI. NMI input state can be got by reading P85

I/O

Supply

Signal name

Pin name

I/O type

Description

voltage

Table 1.5 Pin Description (Continued)

I: Input

O: Output

I/O: Input and output

NOTES:

1. Ports P0 to P5 function as bus control pins when using memory expansion mode or microprocessor mode. They

cannot be used as I/O ports.

2. Port P1 functions as I/O port when the microcomputer is placed in memory expansion mode or microprocessor

mode and all external data buses are selected as 8-bit buses.

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