MC68HC08AS32FN datasheet(11/394 Pages) MOTOROLA

Part #	MC68HC08AS32FN

Description	M68HC08 Family of 8-bit microcontroller units (MCUs)

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Manufacturer	MOTOROLA [Motorola, Inc]

Direct Link	http://www.freescale.com

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11 / 394 page

Table of Contents

MC68HC08AS32 — Rev. 3.0

Advance Information

MOTOROLA

Table of Contents

11

13.4

I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.1

CGMXCLK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.2

STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.3

COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.4

Internal Reset Resources . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.5

Reset Vector Fetch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.6

COPD (COP Disable) . . . . . . . . . . . . . . . . . . . . . . . . . . . .172

13.4.7

COPS (COP Short Timeout) . . . . . . . . . . . . . . . . . . . . . . .173

13.5

COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

13.6

Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

13.7

Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

13.8

Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174

13.8.1

Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174

13.8.2

Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174

13.9

COP Module During Break Interrupts . . . . . . . . . . . . . . . . . . .174

Section 14. External Interrupt (IRQ)

14.1

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

14.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

14.3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

14.4

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176

14.5

IRQ Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

14.6

IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . .180

14.7

IRQ Status and Control Register . . . . . . . . . . . . . . . . . . . . . .180

Section 15. Input/Output (I/O) Ports

15.1

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183

15.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

15.3

Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185

15.3.1

Port A Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185

15.3.2

Data Direction Register A . . . . . . . . . . . . . . . . . . . . . . . . .186

15.4

Port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188

15.4.1

Port B Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .188

15.4.2

Data Direction Register B . . . . . . . . . . . . . . . . . . . . . . . . .189

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