mc68hc908gt8 Freescale Semiconductor, Inc, mc68hc908gt8 Datasheet - Page 242
mc68hc908gt8
Manufacturer Part Number
mc68hc908gt8
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908GT8.pdf
(292 pages)
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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
242
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
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