4
4-16
Rev.1.0
EIT
4.9 Interrupt Handling
Figure 4.9.1 Timing at Which System Break Interrupt (SBI) is Accepted
16-bit instruction
Order in which instructions are executed
32-bit instruction
Address
1000
Address
1002
Address
1004
Address
1008
Interrupt
can be
accepted
Interrupt
cannot be
accepted
Interrupt
can be
accepted
Interrupt
can be
accepted
16-bit instruction
4.9.2 System Break Interrupt (SBI)
The System Break Interrupt (SBI) is an emergency interrupt which is issued when power outage is
detected or a fault condition is notified from an external watchdog timer. The System Break
Interrupt cannot be masked with the PSW Register IE bit.
Therefore, the System Break Interrupt can only be used when some fatal event has already
occurred in the system when the interrupt is detected. Also, this interrupt must be used on condition
that after processing with the SBI handler, the control will not return to the program it was executing
when the system break interrupt occurred.
[Occurrence condition]
___
A System Break Interrupt is accepted by a falling edge at the input of the SBI pin. (The System
Break Interrupt cannot be masked with the PSW Register IE bit.)
In no case will a System Break Interrupt be activated immediately after executing any 16-bit
instruction that begins from the word boundary. (However, this does not apply to 16-bit branch
instructions, in which case the interrupt is accepted immediately after branching.)
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...