4
4-21
EIT
32180 Group User’s Manual (Rev.1.0)
4.12 Example of EIT Processing
Figure 4.12.3 Example of EIT Processing
BRA instruction
RTE
EIT handler
EIT vector entry
Program being
executed
Save BPC to the stack
Save PSW to the stack
Save general-purpose
registers to the stack
Processing by
EIT handler
Restore general-purpose
registers from the stack
Restore PSW from the stack
Restore BPC from the stack
EIT event
occurs
(SBI)
System Break Interrupt
(SBI) processing
Program terminated
or system reset
(Other than SBI)
PC
→
BPC
PSW
→
BPSW
Hardware
preprocessing
Hardware
postprocessing
BPSW
→
PSW
BPC
→
PC
(Note 1)
(Note 1)
Note 1: Indicates saving and restoring the PSW register bits between its PSW and BPSW fields.
Summary of Contents for M32R/ECU Series
Page 17: ...12 This page is blank for reasons of layout...
Page 712: ...CHAPTER 18 OSCILLATOR CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit...
Page 794: ...CHAPTER 22 TYPICAL CHARACTERISTICS...
Page 796: ...APPENDIX 1 MECHANICAL SPECIFICAITONS Appendix 1 1 Dimensional Outline Drawing...
Page 798: ...APPENDIX 2 INSTRUCTION PROCESSING TIME Appendix 2 1 32180 Instruction Processing Time...
Page 802: ...APPENDIX 3 PROCESSING OF UNUSED PINS Appendix 3 1 Example Processing of Unused Pins...