MC68HC908QY2 MOTOROLA [Motorola, Inc], MC68HC908QY2 Datasheet - Page 99

• Manufacturer Part Number: MC68HC908QY2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

7.9.3 Break Status Register
MOTOROLA
MC68HC908QY4•MC68HC908QT4•MC68HC908QY2•MC68HC908QT2•MC68HC908QY1•MC68HC908QT1
Address: $FE00
The break status register (BSR) 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
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.
Reset:
Read:
Write:
This status bit is useful in applications requiring a return to wait mode
after exiting from a break interrupt. Clear SBSW by writing a logic 0 to
it. Reset clears SBSW.
1 = Wait mode was exited by break interrupt
0 = Wait mode was not exited by break interrupt
Bit 7
R
R
System Integration Module (SIM)
Figure 7-22. Break Status Register (BSR)
= Reserved
6
R
R
5
R
4
1. Writing a logic 0 clears SBSW.
R
3
System Integration Module (SIM)
R
2
SBSW
Note 1
1
0
SIM Registers
Bit 0
R
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