4
4-9
EIT
32180 Group User’s Manual (Rev.1.0)
4.6 Saving and Restoring the PC and PSW
PSW
BPC
PC
When EIT is accepted
When RTE instruction
is executed
[1] Saving the SM, IE and C bits
BSM
BIE
BC
SM
IE
C
←
←
←
[2] Updating the SM, IE and C bits
SM
IE
C
Unchanged or 0
0
0
←
←
←
[3] Saving the PC
BPC
PC
←
[4] Setting the vector address in the PC
PC
Vector address
←
[B] Restoring the PC from the BPC register
The value stored in the BPC register
after executing the RTE instruction is
undefined.
[A] Restoring the SM, IE and C bits from the
backup field
SM
IE
C
The values stored in the BSM, BIE
and BC bits after executing the RTE
instruction are undefined.
BSM
BIE
BC
←
←
←
[1]
[A]
[B]
[2]
[3]
[4]
Figure 4.6.1 Saving and Restoring the PC and PSW
16 17
23 24 25
31(LSB)
15
8
7
0(MSB)
SM
IE
C
BC
BSM
BIE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PSW
BPSW field
PSW field
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...