Figure 17.1 Block Diagram Of Kbu - Renesas H8S Series Hardware Manual

16-bit single-chip microcomputer

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Table of Contents

Section 17 Keyboard Buffer Control Unit (KBU)

KBU data I/O pin

KBU clock I/O pin

KBBR: Keyboard data buffer register

KBCRH: Keyboard control register H

KBCRL: Keyboard control register L

Rev. 3.00 Jul. 14, 2005 Page 582 of 986

REJ09B0098-0300

Transmission

Transmit counter

KBI interrupt

KCI interrupt

KTI interrupt

Keyboard buffer transmit data register

KBCR1: Keyboard control register 1

KBCR2: Keyboard control register 2

Figure 17.1 Block Diagram of KBU

H8s/2100 series H8s/2114r R4f2114r