1 break status and control register (brkscr), 2 break address registers (brkh and brkl), Break status and control register (brkscr) – Freescale Semiconductor MC68HC08KH12 User Manual
Page 245: Break address registers (brkh and brkl)
MC68HC(7)08KH12
—
Rev. 1.1
Advance Information
Freescale Semiconductor
245
16.5.1 Break Status and Control Register (BRKSCR)
The break status and control register contains break module enable and
status bits.
BRKE — Break Enable Bit
This read/write bit enables breaks on break address register matches.
Clear BRKE by writing a logic zero 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 one to BRKA generates a break
interrupt. Clear BRKA by writing a logic zero to it before exiting the
break routine. Reset clears the BRKA bit.
1 =
Break address match
0 =
No break address match
16.5.2 Break Address Registers (BRKH and BRKL)
The break address registers contain the high and low bytes of the
desired breakpoint address. Reset clears the break address registers.
Address: $FE0E
Bit 7
6
5
4
3
2
1
Bit 0
Read:
BRKE
BRKA
0
0
0
0
0
0
Write:
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 16-2. Break Status and Control Register (BRKSCR)