HD6432138SW datasheet(75/1061 Pages) RENESAS

75 / 1061 page

Section 1 Overview

Rev. 4.00 Jun 06, 2006 page 21 of 1004

REJ09B0301-0400

Pin No.

Type

Symbol

FP-80A

TFP-80C

I/O

Name and Function

TxD0

TxD1

TxD2

Output Transmit data: Data output pins.

Serial com-

munication

interface

(SCI0, SCI1,

SCI2)

RxD0

RxD1

RxD2

Input

Receive data: Data input pins.

SCK0

SCK1

SCK2

Input/

output

Serial clock: Clock input/output pins.

The SCK0 output type is NMOS push-pull in the

H8S/2138 Group and CMOS output in the

H8S/2134 Group.

SCI with

IrDA (SCI2)

IrTxD

IrRxD

Output

Input

IrDA transmit data/receive data: Input and output

pins for data encoded for IrDA use.

HDB7 to

HDB0

72 to 65

Input/

output

Host interface data bus: Bidirectional 8-bit bus for

accessing the host interface.

Host

interface

(HIF)

CS1,

CS2,

ECS2

15, 75, 20

Input

Chip select 1 and 2: Input pins for selecting host

interface channel 1 or 2.

IOR

Input

I/O read: Input pin that enables reading from the

host interface.

IOW

Input

I/O write: Input pin that enables writing to the host

interface.

HA0

Input

Command/data: Input pin that indicates whether

an access is a data access or command access.

GA20

Output GATE A20: A20 gate control signal output pin.

HIRQ11

HIRQ1

HIRQ12

Output Host interrupt 11, 1, and 12: Output pins for

interrupt requests to the host.

HIFSD

Input

Host interface shutdown: Control input pin used

to place host interface input/output pins in the high-

impedance/cutoff state.

Keyboard

control

KIN0 to

KIN7

21 to 24,

25 to 28

Input

Keyboard input: Matrix keyboard input pins.

Normally, P10 to P17 and P20 to P27 are used as

key-scan outputs. This enables a maximum 16-

output

× 16-input, 256-key matrix to be configured.

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