H838024 datasheet(253/697 Pages) RENESAS

Part #	H838024

Description	Renesas 8-Bit Single-Chip Microcomputer Super Low Power Series

PDF	697 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 8 I/O Ports

Rev. 7.00 Mar 10, 2005 page 211 of 652

REJ09B0042-0700

8.4.3

Pin Functions

Table 8.9 shows the port 4 pin functions.

Table 8.9

Port 4 Pin Functions

Pin Functions and Selection Method

P43/

IRQ

The pin function depends on bit IRQ0 in PMR2.

IRQ0

Pin function

P43 input pin

IRQ

0 input pin

P42/TXD32

The pin function depends on bit TE in SCR3, bit SPC32 in SPCR, and bit PCR42

in PCR4.

SPC32

PCR42

Pin function

P42 input pin

P42 output pin

TXD32 output pin

P41/RXD32

The pin function depends on bit RE in SCR3 and bit PCR41 in PCR4.

PCR41

Pin function

P41 input pin

P41 output pin

RXD32 input pin

P40/SCK32

The pin function depends on bit CKE1 and CKE0 in SCR3, bit COM in SMR3,

and bit PCR40 in PCR4.

CKE1

CKE0

COM

PCR40

Pin function

P40 input pin P40 output pin SCK32 output

SCK32 input

*: Don’t care

H838024 Datasheet(PDF) 253 Page - Renesas Technology Corp

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