MC68HC705CT4 Datasheet, PDF (49/152 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
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
V_TST = 2 x V_DD
V_SS–V_DD
V_TST
V_SS–V_DD
V_DD
V_SS–V_DD
V_SS
Single-Chip
Self-Check
MC68HC705CT4 — Rev. 2.0
MOTOROLA
General Release Specification
Operating Modes
49
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