mc68hc908lb8 Freescale Semiconductor, Inc, mc68hc908lb8 Datasheet - Page 183

• Manufacturer Part Number: mc68hc908lb8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

17.7 SIM Registers
The SIM has three memory-mapped registers.
17.7.1 Break Status Register
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.
Freescale Semiconductor
BUSCLKX4
INT/BREAK
IAB
Address:
Reset:
Note: Previous data can be operand data or the STOP opcode, depending
Read:
CPUSTOP
Write:
R/W
IDB
IAB
on the last instruction.
1. Writing a 0 clears SBSW.
$FE00
Bit 7
R
R
0
Figure 17-16. Stop Mode Recovery from Interrupt
Address
$FE00
$FE01
$FE03
STOP ADDR
Figure 17-17. Break Status Register (BSR)
STOP +1
= Reserved
Figure 17-15. Stop Mode Entry Timing
R
6
0
PREVIOUS DATA
MC68HC908LB8 Data Sheet, Rev. 1
Table 17-3. SIM Registers
R
5
0
STOP ADDR + 1
Register
SRSR
BFCR
BSR
STOP + 2
Table 17-3
STOP RECOVERY PERIOD
NEXT OPCODE
R
4
0
STOP + 2
shows the mapping of these registers.
R
3
0
SAME
Access Mode
SP
User
User
User
R
2
0
SAME
SP – 1
Note
SBSW
SAME
1
0
(1)
SAME
SP – 2
Bit 0
R
0
SIM Registers
SP – 3
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