mc68hc908ap8a Freescale Semiconductor, Inc, mc68hc908ap8a Datasheet - Page 293

• Manufacturer Part Number: mc68hc908ap8a
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

SBSW — Break Wait Bit
21.5.4 SIM Break Flag Control Register
The SIM break flag control register (SBFCR) contains a bit that enables software to clear status bits while
the MCU is in a break state.
BCFE — Break Clear Flag Enable Bit
Freescale Semiconductor
SBSW can be read within the break interrupt routine. The user can modify the return address on the
stack by subtracting 1 from it. The following code is an example.
This read/write bit enables software to clear status bits by accessing status registers while the MCU is
in a break state. To clear status bits during the break state, the BCFE bit must be set.
1 = Wait mode was exited by break interrupt
0 = Wait mode was not exited by break interrupt
1 = Status bits clearable during break
0 = Status bits not clearable during break
Address:
Reset:
Read:
Write:
$FE03
Figure 21-7. SIM Break Flag Control Register (SBFCR)
BCFE
Bit 7
R
0
= Reserved
MC68HC908AP A-Family Data Sheet, Rev. 3
R
6
R
5
R
4
R
3
R
2
R
1
Break Module Registers
Bit 0
R
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