10
10-25
Rev.1.0
For interrupts which have two or more interrupt sources for one interrupt vector table, the interrupt
control registers are used to control their interrupt requests and determine interrupt inputs. For this
reason, the status flags in the Interrupt Controller only serve as the bits to determine whether
interrupts are requested from the sources that have been enabled for interrupt and cannot be
accessed for write.
(1) Interrupt request status bit
The status bit is used to determine whether an interrupt is requested. When an interrupt request
occurs, this bit is set in hardware, and cannot be set in software. The status bit is cleared by
writing 0. Writing 1 has no effect, the bit retains its status. Because the status bit is unaffected by
the interrupt mask bit, it can also be used to check operation of the peripheral function. During
interrupt processing, make sure that among the grouped interrupt flags, only the flag which has
had its associated interrupt serviced is cleared.
If any flag for which the interrupt has not been serviced is cleared, unexecuted interrupt requests
are also cleared.
(2) Interrupt mask bit
This flag is used to disable an unnecessary interrupt among the grouped interrupt requests.
Setting this bit to 0 enables the interrupt; setting this bit to 1 disables the interrupt.
Figure 10.2.5 Interrupt Status Register and Mask Register
INPUT/OUTPUT TIMERS
10.2 Common Timer Unit
To the Interrupt
Controller
Each timer or TIN input
interrupt request
Interrupt status
Data bus
Set
Group interrupt
Interrupt enable
clear
F/F
F/F
Data=0
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 ...