mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 99

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

7.7.2 SIM Break Status Register
MC68HC708MP16
Freescale Semiconductor
—
Rev. 3.1
NOTE 1. Writing a logic 0 clears SBSW.
Address:
The SIM break status register contains a flag to indicate that a break
caused an exit from wait 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. The
following code is an example of this. Writing zero to the SBSW bit
clears 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.
$FE00
Bit 7
R
R
Figure 7-15. SIM Break Status Register (SBSR)
System Integration Module (SIM)
= Reserved for factory test
R5
6
R
5
R
4
R
3
System Integration Module (SIM)
R
2
Note
SBSW
1
0
Technical Data
(1)
Bit 0
R
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