HC705CT4GRSSLASHD datasheet(49/152 Pages) NXP

49 / 152 page

MC68HC705CT4 — Rev. 2.0

General Release Specification

MOTOROLA

Operating Modes

General Release Specification — MC68HC705CT4

Section 6. Operating Modes

6.1 Contents

6.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

6.3

Single-Chip Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

6.4

Bootloader Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

6.5

Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

6.5.1

Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

6.5.2

Stop Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

6.5.3

Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

6.5.4

Low-Power Wait . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

6.2 Introduction

The MCU has two modes of operation: single-chip mode and bootloader

mode with two oscillator options. Table 6-1 shows the conditions

required to go into each mode.

Table 6-1. Operating Mode Conditions

RESET

IRQ

PB1

PD5

MODE

TST = 2 x VDD

VSS–VDD

TST

VSS–VDD

Single-Chip

Self-Check

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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