MC68HC08BD24 Datasheet, PDF (223/244 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Technical Data — MC68HC08BD24
Section 18. Break Module (BRK)
18.1 Contents
18.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
18.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
18.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224
18.4.1 Flag Protection During Break Interrupts . . . . . . . . . . . . . . . 226
18.4.2 CPU During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . .226
18.4.3 TIM During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . . 226
18.4.4 COP During Break Interrupts . . . . . . . . . . . . . . . . . . . . . . . 226
18.5 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
18.5.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226
18.5.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227
18.6 Break Module Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
18.6.1 Break Status and Control Register. . . . . . . . . . . . . . . . . . . 227
18.6.2 Break Address Registers . . . . . . . . . . . . . . . . . . . . . . . . . . 228
18.6.3 SIM Break Status Register . . . . . . . . . . . . . . . . . . . . . . . . . 228
18.6.4 SIM Break Flag Control Register . . . . . . . . . . . . . . . . . . . . 230
18.2 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.
MC68HC08BD24 — Rev. 1.1
Freescale Semiconductor
Technical Data
223