MC68HC908JB8 Datasheet, PDF (113/286 Pages) Motorola, Inc – MICROCONTROLLERS

System Integration Module (SIM)
SIM Registers
OSCXCLK
INT/BREAK
IAB
STOP RECOVERY PERIOD
STOP +1
STOP + 2 STOP + 2
SP
SP – 1
SP – 2
SP – 3
Figure 8-17. Stop Mode Recovery from Interrupt or Break
8.8 SIM Registers
The SIM has two break registers and one reset register.
8.8.1 Break Status Register
The break status register contains a flag to indicate that a break caused
an exit from stop or wait mode.
Address: $FE00
Bit 7
6
5
4
3
2
1
Bit 0
Read:
SBSW
R
R
R
R
R
R
R
Write:
Note 1
Reset:
0
Note 1. Writing a logic 0 clears SBSW. R
= Reserved
Figure 8-18. Break Status Register (BSR)
SBSW — SIM Break Stop/Wait
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 0 to it. Reset clears SBSW.
1 = Stop mode or wait mode was exited by break interrupt
0 = Stop mode or wait mode was not exited by break interrupt
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
System Integration Module (SIM)
Technical Data
113