MC68HC08AZ60A Datasheet, PDF (171/480 Pages) Motorola, Inc – Microcontrollers

Advance Information — MC68HC08AZ60A
Section 11. Break Module
11.1 Contents
11.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
11.3 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
11.4 Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
11.4.1 Flag Protection During Break Interrupts . . . . . . . . . . . .173
11.4.2 CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . 174
11.4.3 TIM and PIT During Break Interrupts . . . . . . . . . . . . . . . 174
11.4.4 COP During Break Interrupts . . . . . . . . . . . . . . . . . . . . . 174
11.5 Break Module Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
11.5.1 Break Status and Control Register (BRKSCR) . . . . . . . 175
11.5.2 Break Address Registers (BRKH and BRKL) . . . . . . . . 176
11.6 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
11.6.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
11.6.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
11.2 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.
11.3 Features
Features of the break module include the following:
• Accessible I/O registers during the break interrupt
• CPU-generated break Interrupts
MC68HC08AZ60A — Rev 0.0
MOTOROLA
Break Module
Advance Information
171