MC68HC08AZ16 Datasheet, PDF (130/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Break Module
Break Module
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Flag protection during break interrupts . . . . . . . . . . . . . . . . . . . . . 131
CPU during break interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
DMA during break interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
TIM and PIT during break interrupts . . . . . . . . . . . . . . . . . . . . . . . 132
COP during break interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Break module registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Break status and control register (BRKSCR) . . . . . . . . . . . . . . . . 133
Break address registers (BRKH and BRKL) . . . . . . . . . . . . . . . . . 134
Low-power modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
WAIT mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
STOP mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Introduction
This section describes the break module. The break module can
generate a break interrupt which stops normal program flow at a defined
address in order to begin execution of a background program.
1-brk
MOTOROLA
Break Module
MC68HC08AZ32
129