MC68HC908AS60MFN MOTOROLA [Motorola, Inc], MC68HC908AS60MFN Datasheet - Page 147

• Manufacturer Part Number: MC68HC908AS60MFN
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

9.6.2 Reset
9.6.3 Break Interrupts
9.6.4 Status Flag Protection in Break Mode
MC68HC908AS60 — Rev. 1.0
MOTOROLA
All reset sources always have higher priority than interrupts and cannot
be arbitrated.
The break module can stop normal program flow at a software-
programmable break point by asserting its break interrupt output. See
Section 12. Break
by forcing it to the SWI vector location. Refer to the break interrupt
subsection of each module to see how each module is affected by the
break state.
The SIM controls whether status flags contained in other modules can
be cleared during break mode. The user can select whether flags are
protected from being cleared by properly initializing the break clear flag
enable bit (BCFE) in the SIM break flag control register (SBFCR).
Freescale Semiconductor, Inc.
For More Information On This Product,
System Integration Module (SIM)
Go to: www.freescale.com
Figure 9-11
INT1
INT2
Module. The SIM puts the CPU into the break state
CLI
LDA
PSHH
PULH
RTI
PSHH
PULH
RTI
.
#$FF
Interrupt Recognition Example
INT1 INTERRUPT SERVICE ROUTINE
INT2 INTERRUPT SERVICE ROUTINE
System Integration Module (SIM)
Program Exception Control
Technical Data
BACKGROUND
ROUTINE
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