MC68HC908AS60ACFN FREESCALE [Freescale Semiconductor, Inc], MC68HC908AS60ACFN Datasheet - Page 152

• Manufacturer Part Number: MC68HC908AS60ACFN
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Break Module (BRK)
13.5.1 Break Status and Control Register
The break status and control register contains break module enable and status bits.
BRKE — Break Enable Bit
BRKA — Break Active Bit
13.5.2 Break Address Registers
The break address registers contain the high and low bytes of the desired breakpoint address. Reset
clears the break address registers.
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This read/write bit enables breaks on break address register matches. Clear BRKE by writing a 0 to bit
7. Reset clears the BRKE bit.
This read/write status and control bit is set when a break address match occurs. Writing a 1 to BRKA
generates a break interrupt. Clear BRKA by writing a 0 to it before exiting the break routine. Reset
clears the BRKA bit.
1 = Breaks enabled on 16-bit address match
0 = Breaks disabled on 16-bit address match
1 = (When read) Break address match
0 = (When read) No break address match
Register:
Address:
Address:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Figure 13-4. Break Address Registers (BRKH and BRKL)
Figure 13-3. Break Status and Control Register (BSCR)
$FE0E
$FE0C
BRKE
BRKH
Bit 15
Bit 7
Bit 7
Bit 7
0
0
0
= Unimplemented
$FE0D
BRKA
BRKL
14
6
0
6
0
6
0
13
5
0
0
5
0
5
0
12
4
0
0
4
0
4
0
11
3
0
0
3
0
3
0
10
2
0
0
2
0
2
0
1
0
0
1
9
0
1
0
Freescale Semiconductor
Bit 0
Bit 0
Bit 8
Bit 0
0
0
0
0