HD6432142 datasheet(610/1177 Pages) RENESAS

Part #	HD6432142

Description	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1177 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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610 / 1177 page

Section 17 Keyboard Buffer Controller

Rev. 4.00 Sep 27, 2006 page 566 of 1130

REJ09B0327-0400

Bit 6—Keyboard Clock Out (KCLKO): Controls KBC clock I/O pin output.

Bit 6

KCLKO

Description

Keyboard buffer controller clock I/O pin is low

Keyboard buffer controller clock I/O pin is high

(Initial value)

Bit 5—Keyboard Data Out (KDO): Controls KBC data I/O pin output.

Bit 5

KDO

Description

Keyboard buffer controller data I/O pin is low

Keyboard buffer controller data I/O pin is high

(Initial value)

Bit 4—Reserved: This bit cannot be modified and is always read as 1.

Bits 3 to 0—Receive Counter (RXCR3 to RXCR0): These bits indicate the received data bit.

Their value is incremented on the fall of KCLK. These bits cannot be modified.

The receive counter is initialized to 0000 by a reset and when 0 is written in KBE. Its value returns

to 0000 after a stop bit is received.

Bit 3

Bit 2

Bit 1

Bit 0

RXCR3

RXCR2

RXCR1

RXCR0

Receive Data Contents

—

(Initial value)

Start bit

KB0

KB1

KB2

KB3

KB4

KB5

00KB6

KB7

Parity bit

1—

———

HD6432142 Datasheet(PDF) 610 Page - Renesas Technology Corp

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