MC68HC908GP20 Datasheet, PDF (99/406 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Advance Information — MC68HC908GP20
Section 6. Break Module (BRK)
6.1 Contents
6.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
6.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
6.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
6.4.1 Flag Protection During Break Interrupts . . . . . . . . . . . . . . 102
6.4.2 CPU During Break Interrupts. . . . . . . . . . . . . . . . . . . . . . . 102
6.4.3 TIMI and TIM2 During Break Interrupts. . . . . . . . . . . . . . . 102
6.4.4 COP During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . 102
6.5 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
6.5.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
6.5.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
6.6 Break Module Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
6.6.1 Break Status and Control Register . . . . . . . . . . . . . . . . . . 103
6.6.2 Break Address Registers. . . . . . . . . . . . . . . . . . . . . . . . . . 104
6.6.3 Break Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
6.6.4 Break Flag Control Register . . . . . . . . . . . . . . . . . . . . . . .106
6.2 Introduction
This section describes the break module. The break module can
generate a break interrupt that stops normal program flow at a defined
address to enter a background program.
MC68HC908GP20 — Rev 2.1
Freescale Semiconductor
Advance Information
99