MC68HC08XL36 Datasheet, PDF (145/362 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Break Module (BRK)
Low-Power Modes
Low-Power Modes
The WAIT and STOP instructions put the MCU in low-power-consump-
tion standby modes.
Wait Mode
If enabled, the break module is active in wait mode. A DMA-generated
address that matches the break address registers in wait mode sets the
BW in the break status register.
The DMA can also use the break status and control register as its
destination address in order to write to the BRKA and BRKE bits during
wait mode. A DMA write to the break status and control register sets the
BW bit.
Stop Mode
The break module is inactive in stop mode. The STOP instruction does
not affect break module register states.
Break Module Registers
These registers control and monitor operation of the break module:
• Break status and control register (BSCR)
• Break address register high (BRKH)
• Break address register low (BRKL)
• Break status register (BSR)
• Break flag control register (BFCR)
5-brk_a
MOTOROLA
Break Module (BRK)
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MC68HC08XL36
145