MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 150

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

System Integration Module (SIM)
9.7.2 SIM Reset Status Register
Data Sheet
150
Address:
This register contains six flags that show the source of the last reset
provided all previous reset status bits have been cleared. Clear the SIM
reset status register by reading it. A power-on reset sets the POR bit and
clears all other bits in the register.
POR — Power-On Reset Bit
PIN — External Reset Bit
COP — Computer Operating Properly Reset Bit
ILOP — Illegal Opcode Reset Bit
ILAD — Illegal Address Reset Bit (opcode fetches only)
MODRST — Monitor Mode Entry Module Reset Bit
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = Last reset caused by POR circuit
0 = Read of SRSR
1 = Last reset caused by external reset pin (RST)
0 = POR or read of SRSR
1 = Last reset caused by COP counter
0 = POR or read of SRSR
1 = Last reset caused by an illegal opcode
0 = POR or read of SRSR
1 = Last reset caused by an opcode fetch from an illegal address
0 = POR or read of SRSR
1 = Last reset caused by monitor mode entry when vector locations
0 = POR or read of SRSR
$FE01
POR
Bit 7
$FFFE and $FFFF are $FF after POR while IRQ1 = V
1
Figure 9-21. SIM Reset Status Register (SRSR)
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= Unimplemented
PIN
6
0
COP
5
0
ILOP
4
0
ILAD
MC68HC908AP Family — Rev. 2.5
3
0
MODRST
2
0
LVI
1
0
MOTOROLA
DD
Bit 0
0
0