
MC68HC908MR16/MC68HC908MR32
—
Rev. 5.0
Advance Information
MOTOROLA
Break Module (BRK)
361
Advance Information
—
MC68HC908MR16/MC68HC908MR32
Section 21. Break Module (BRK)
21.1 Contents
21.2
21.3
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .361
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362
21.4
21.4.1
21.4.2
21.4.3
21.4.4
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362
Flag Protection During Break Interrupts. . . . . . . . . . . . . . .364
CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . .364
TIM1 and TIM2 During Break Interrupts. . . . . . . . . . . . . . .364
COP During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . .364
21.5
21.5.1
21.5.2
21.6
21.6.1
21.6.2
21.6.3
21.6.4
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .364
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .364
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .365
Break Module Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . .365
Break Status and Control Register. . . . . . . . . . . . . . . . . . .365
Break Address Registers . . . . . . . . . . . . . . . . . . . . . . . . . .366
Break Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .367
Break Flag Control Register. . . . . . . . . . . . . . . . . . . . . . . .368
21.2 Introduction
This section describes the break module (BRK). The break module can
generate a break interrupt that stops normal program flow at a defined
address to enter a background program.