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Motorola MC68HC908AB32 User Manual

Motorola MC68HC908AB32
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Table of Contents
MC68HC908AB32
—
Rev. 1.0 Technical Data
MOTOROLA Table of Contents
17
17.7 Port E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .326
17.7.1 Port E Data Register (PTE) . . . . . . . . . . . . . . . . . . . . . . . .326
17.7.2 Data Direction Register E (DDRE) . . . . . . . . . . . . . . . . . . .328
17.8 Port F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .329
17.8.1 Port F Data Register (PTF) . . . . . . . . . . . . . . . . . . . . . . . .329
17.8.2 Data Direction Register F (DDRF) . . . . . . . . . . . . . . . . . . .330
17.8.3 Port F Input Pullup Enable Register (PTFPUE) . . . . . . . . .332
17.9 Port G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .332
17.9.1 Port G Data Register (PTG) . . . . . . . . . . . . . . . . . . . . . . . .332
17.9.2 Data Direction Register G (DDRG) . . . . . . . . . . . . . . . . . .333
17.10 Port H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .335
17.10.1 Port H Data Register (PTH) . . . . . . . . . . . . . . . . . . . . . . . .335
17.10.2 Data Direction Register H (DDRH). . . . . . . . . . . . . . . . . . .335
Section 18. External Interrupt (IRQ)
18.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339
18.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339
18.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339
18.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .340
18.4.1 IRQ
Pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .342
18.5 IRQ Status and Control Register (ISCR) . . . . . . . . . . . . . . . .343
18.6 IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . .344
Section 19. Keyboard Interrupt Module (KBI)
19.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .345
19.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .345
19.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .346
19.4 I/O Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .346
19.5 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .347
19.5.1 Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . .349
19.5.2 Keyboard Status and Control Register. . . . . . . . . . . . . . . .349

Table of Contents

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Motorola MC68HC908AB32 Specifications

General IconGeneral
BrandMotorola
ModelMC68HC908AB32
CategoryController
LanguageEnglish

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