MC68HC705C View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

MFG CO.

MC68HC705C

M68HC05 Microcontrollers

Motorola => Freescale 

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Technical Data — MC68HC705C4A • MC68HSC705C4A

Section 1. General Description

1.1 Contents

1.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

1.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

1.4 Programmable Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1.5 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

1.6 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

1.7 Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

1.7.1

1.7.2

VDD and VSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

OSC1 and OSC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

1.7.2.1

1.7.2.2

Crystal Resonator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Ceramic Resonator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

1.7.2.3 External Clock Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

1.7.3 External Reset Pin (RESET) . . . . . . . . . . . . . . . . . . . . . . . .32

1.7.4 External Interrupt Request Pin (IRQ) . . . . . . . . . . . . . . . . . . 32

1.7.5 Input Capture Pin (TCAP) . . . . . . . . . . . . . . . . . . . . . . . . . . 32

1.7.6 Output Compare Pin (TCMP) . . . . . . . . . . . . . . . . . . . . . . . .33

1.7.7 Port A I/O Pins (PA7–PA0). . . . . . . . . . . . . . . . . . . . . . . . . . 33

1.7.8 Port B I/O Pins (PB7–PB0). . . . . . . . . . . . . . . . . . . . . . . . . . 33

1.7.9 Port C I/O Pins (PC7–PC0) . . . . . . . . . . . . . . . . . . . . . . . . . 33

1.7.10 Port D I/O Pins (PD7 and PD5–PD0) . . . . . . . . . . . . . . . . . . 33

1.2 Introduction

The MC68HC705C4A is a member of the low-cost, high-performance

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

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

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

MC68HC705C4A • MC68HSC705C4A — Rev. 3.0

MOTOROLA

General Description

Technical Data

21

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