MC68HC08AB16A Datasheet, PDF (357/380 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC08AB16A
Section 22. Break Module (BRK)
22.1 Contents
22.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
22.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
22.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
22.4.1 Flag Protection During Break Interrupts . . . . . . . . . . . . . . . 360
22.4.2 CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . 360
22.4.3 PIT, TIMA, and TIMB During Break Interrupts . . . . . . . . . . 360
22.4.4 COP During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . 360
22.5 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
22.5.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
22.5.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
22.6 Break Module Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
22.6.1 Break Status and Control Register. . . . . . . . . . . . . . . . . . . 361
22.6.2 Break Address Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 362
22.6.3 SIM Break Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 362
22.6.4 SIM Break Flag Control Register . . . . . . . . . . . . . . . . . . . . 364
22.2 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.
MC68HC08AB16A — Rev. 2.0
MOTOROLA
Break Module (BRK)
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Technical Data
357