mc908jl16 Freescale Semiconductor, Inc, mc908jl16 Datasheet - Page 59

• Manufacturer Part Number: mc908jl16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

4.7 SIM Registers
The SIM has three memory mapped registers.
4.7.1 Break Status Register (BSR)
The break status register contains a flag to indicate that a break caused an exit from stop or wait mode.
SBSW — SIM Break Stop/Wait
Freescale Semiconductor
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This status bit is useful in applications requiring a return to wait or stop mode after exiting from a break
interrupt. Clear SBSW by writing a logic zero to it. Reset clears SBSW.
INT/BREAK
1 = Stop mode or wait mode was exited by break interrupt
0 = Stop mode or wait mode was not exited by break interrupt
Break Status Register (BSR)
Reset Status Register (RSR)
Break Flag Control Register (BFCR)
ICLK
IAB
Address: $FE00
Reset:
NOTE: Previous data can be operand data or the STOP opcode, depending on the last
Read:
Write:
CPUSTOP
Figure 4-19. Stop Mode Recovery from Interrupt or Break
R/W
IDB
IAB
instruction.
Bit 7
R
R
STOP ADDR
Figure 4-20. Break Status Register (BSR)
STOP +1
= Reserved
Figure 4-18. Stop Mode Entry Timing
R
6
PREVIOUS DATA
MC68HC908JL16 Data Sheet, Rev. 1.1
STOP ADDR + 1
R
5
STOP + 2
STOP RECOVERY PERIOD
NEXT OPCODE
R
4
STOP + 2
1. Writing a clears SBSW.
R
3
SAME
SP
SAME
R
2
SP – 1
Note
SBSW
SAME
1
0
(1)
SAME
SP – 2
Bit 0
R
SIM Registers
SP – 3
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