MC68HC908GT16_07 FREESCALE [Freescale Semiconductor, Inc], MC68HC908GT16_07 Datasheet - Page 242

• Manufacturer Part Number: MC68HC908GT16_07
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Development Support
19.2.2.3 SIM Break Status Register
The SIM break status register (SBSR) contains a flag to indicate that a break caused an exit from wait
mode. This register is only used in emulation mode.
SBSW — SIM Break Stop/Wait
19.2.2.4 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
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SBSW can be read within the break state SWI routine. The user can modify the return address on the
stack by subtracting one from it.
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: $FE00
Address:
Reset:
Reset:
Read:
Read:
Write:
Write:
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
$FE03
Figure 19-8. SIM Break Flag Control Register (SBFCR)
BCFE
Bit 7
Bit 7
R
R
R
0
Figure 19-7. SIM Break Status Register (SBSR)
= Reserved
= Reserved
R
R
6
6
R
R
5
5
R
R
4
4
1. Writing a 0 clears SBSW.
R
R
3
3
R
R
2
2
Note
SBSW
R
1
0
1
(1)
Freescale Semiconductor
Bit 0
Bit 0
R
R