MC68HC705K1 Datasheet, PDF(15/140 Page) Freescale Semiconductor, Inc

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MC68HC705K1 Datasheet, PDF (15/140 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

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Freescale Semiconductor, Inc.

Technical Data â MC68HC705K1

Section 1. General Description

1.1 Contents

1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

1.4 Mask Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

1.5 MCU Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

1.6 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

1.6.1

1.6.2

VDD and VSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

OSC1 and OSC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

1.6.2.1 Crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

1.6.2.2 Ceramic Resonator . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

1.6.2.3 2-Pin RC Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

1.6.2.4 3-Pin RC Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.6.2.5 External Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.6.3 RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.6.4

1.6.5

IRQ/VPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

PA7âPA0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.6.6 PB1/OSC3 and PB0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.2 Introduction

The MC68HC705K1 is a member of the low-cost, high-performance

M68HC05 Family of 8-bit microcontroller units (MCU). The M68HC05

Family is based on the customer-specified integrated circuit (CSIC)

design strategy. All MCUs in the family use the popular M68HC05

central processor unit (CPU) and are available with a variety of

subsystems, memory sizes and types, and package types.

MC68HC705K1 â Rev. 2.0

General Description

For More Information On This Product,

Go to: www.freescale.com

Technical Data

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