s908ey8ad4cfjer Freescale Semiconductor, Inc, s908ey8ad4cfjer Datasheet - Page 166

• Manufacturer Part Number: s908ey8ad4cfjer
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

System Integration Module (SIM)
14.7 SIM Registers
The SIM has three memory mapped registers.
14.7.1 SIM Break Status Register
The SIM break status register (SBSR) contains a flag to indicate that a break caused an exit from stop or
wait mode.
166
CGMXCLK
INT
IAB
Note: 1. Writing a 0 clears SBSW
CPUSTOP
Note: Previous data can be operand data or the STOP opcode, depending on the last instruction.
Address: $FE00
Reset:
Read:
Write:
R/W
IAB
IDB
Figure 14-15. Stop Mode Recovery from Interrupt
Bit 7
Figure 14-16. SIM Break Status Register (SBSR)
Address
R
R
0
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
$FE00
$FE01
$FE03
STOP ADDR
STOP +1
Figure 14-14. Stop Mode Entry Timing
= Reserved
PREVIOUS DATA
R
6
0
Table 14-3. SIM Registers
STOP ADDR + 1
R
Register
5
0
SBFCR
STOP + 2
SBSR
SRSR
Table 14-3
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
SAME
R
2
0
SP – 1
Note
SBSW
SAME
1
0
(1)
SAME
SP – 2
Freescale Semiconductor
Bit 0
R
0
SP – 3