MC68HC908GZ8 Datasheet, PDF (80/344 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Break Module (BRK)
6.4 Break Module Registers
These registers control and monitor operation of the break module:
• Break status and control register (BRKSCR)
• Break address register high (BRKH)
• Break address register low (BRKL)
• Break status register (BSR)
• Break flag control register (BFCR)
6.4.1 Break Status and Control Register
The break status and control register (BRKSCR) contains break module enable
and status bits.
Address: $FE0B
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
0
0
0
BRKE BRKA
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 6-3. Break Status and Control Register (BRKSCR)
BRKE — Break Enable Bit
This read/write bit enables breaks on break address register matches. Clear
BRKE by writing a logic 0 to bit 7. Reset clears the BRKE bit.
1 = Breaks enabled on 16-bit address match
0 = Breaks disabled
BRKA — Break Active Bit
This read/write status and control bit is set when a break address match occurs.
Writing a logic 1 to BRKA generates a break interrupt. Clear BRKA by writing a
logic 0 to it before exiting the break routine. Reset clears the BRKA bit.
1 = Break address match
0 = No break address match
Data Sheet
80
Break Module (BRK)
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MC68HC908GZ8
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