MC68HC908JK3 MOTOROLA [Motorola, Inc], MC68HC908JK3 Datasheet - Page 93

• Manufacturer Part Number: MC68HC908JK3
• Description: MC68HC908JK1
• Manufacturer: MOTOROLA [Motorola, Inc]

MC68H(R)C908JL3
MOTOROLA
—
Rev. 1.0
Address:
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
LVI — Low Voltage Inhibit Reset bit
Read:
Write:
POR:
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
1 = Last reset caused by LVI circuit
0 = POR or read of SRSR
$FE01
POR
Bit 7
$FFFE and $FFFF are $00 after POR while IRQB = V
1
System Integration Module (SIM)
Figure 7-21. Reset Status Register (RSR)
= Unimplemented
PIN
6
0
COP
5
0
ILOP
4
0
ILAD
3
0
System Integration Module (SIM)
MODRST
2
0
LVI
1
0
Technical Data
SIM Registers
DD
Bit 0
0
0
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