5
5-11
Rev.1.0
INTERRUPT CONTROLLER (ICU)
5.3 ICU Related Registers
<When reset: H'07>
D
Bit Name
Function
R
W
0-2
No functions assigned
0
–
(8-10)
3
IREQ (interrupt request)
0 : Interrupt not requested
(11)
1 : Interrupt requested
4
No functions assigned
0
–
(12)
5-7
ILEVEL
000: Interrupt priority level 0
(13-15)
(interrupt priority level)
001: Interrupt priority level 1
010: Interrupt priority level 2
011: Interrupt priority level 3
100: Interrupt priority level 4
101: Interrupt priority level 5
110: Interrupt priority level 6
111: Interrupt priority level 7(Interrupt-disabled state)
W =
: Can only be set/cleared when the "type of input source" is the edge type (and one input source).
(1) IREQ (interrupt request) bit (D3 or D11)
When an interrupt request from internal peripheral I/O occurs, the IREQ (interrupt request) bit is
set to 1.
This bit can be set and cleared in software for only the edge input type of interrupt sources (and
cannot for the level type). The IREQ bit when set for an interrupt request generated by an edge
input type of interrupt source is automatically cleared to 0 upon reading the Interrupt Vector
Register (IVECT). (However, this bit is not automatically cleared for the level type of interrupt
source.)
If this bit is cleared in software at the same time it is set by an interrupt request generated, the
former has priority (i.e., the bit is cleared). Also, if this bit is cleared by reading the IVECT Register
at the same time it is set by an interrupt request generated, the former has priority (i.e., the bit is
cleared).
D0
1
2
3
4
5
6
D7
(D8
9
10
11
12
13
14
D15)
IREQ
ILEVEL
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 ...