Chapter 3
Interrupts
III - 2
Overview
3.1
Overview
The LSI provides vectored interrupt services, consisting of LSI-reset, Non-Maskable Interrupts (NMI), and
Maskable Interrupts. The transition time from the interrupt occurrence to interrupt handler is 6 SYSCLK cycles at
a minimum, and the same amount of time is needed at a minimum when returning from the interrupt handler.
Each interrupt has a interrupt control register (hereinafter described as "xICR", and "x" is replaced with other
words. For example, in the case of Timer-0 interrupt control register, "x" is replaces with "TM0". All interrupt
control registers are described in [3.2 Control Registers].), which includes the interrupt request bit (IR), the inter-
rupt enable bit (IE) and the interrupt level bits (LV1-0).
IR is set to "1" by the corresponding interrupt trigger, and cleared to "0" when the interrupt is accepted.
IR can also be set and cleared by software.
IE controls the interrupt occurrence, and can be set and cleared only by software.
IE is valid when PSW.MIE is "1". NMICR (the interrupt control register of NMI) doesn’t have IE.
LV1-0 control the priority level of an interrupt. There is three levels of interrupt priority, and the lower vector
number has priority when several interrupts with the same interrupt priority level occur. A maskable interrupt is
accepted when LV1-0 is less than PSW.IM1-0. NMI is handled in priority to maskable interrupts.
Содержание MN101L Series
Страница 1: ...Cover MICROCOMPUTER MN101L MN101LR05D 04D 03D 02D LSI User s Manual Pub No 21705 015E ...
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Страница 11: ...Contents Contents 0 ...
Страница 22: ... Contents 11 ...
Страница 23: ...I Chapter 1 Overview 1 ...
Страница 62: ...Chapter 1 Overview I 40 Cautions for Circuit Setup ...
Страница 63: ...II Chapter 2 CPU 2 ...
Страница 94: ...Chapter 2 CPU II 32 Reset ...
Страница 95: ...III Chapter 3 Interrupts 3 ...
Страница 143: ...IV Chapter 4 Clock Mode Voltage Control 4 ...
Страница 175: ...V Chapter 5 Watchdog Timer WDT 5 ...
Страница 180: ...Chapter 5 Watchdog Timer WDT V 6 Operation ...
Страница 181: ...VI Chapter 6 Power Supply Voltage Detection 6 ...
Страница 189: ...VII Chapter 7 I O Port 7 ...
Страница 248: ...Chapter 7 I O Port VII 60 Port 8 ...
Страница 249: ...VIII Chapter 8 8 bit Timer 8 ...
Страница 282: ...Chapter 8 8 bit Timer VIII 34 8 bit Timer Cascade Connection ...
Страница 283: ...IX Chapter 9 16 bit Timer 9 ...
Страница 346: ...Chapter 9 16 bit Timer IX 64 IGBT Output with Dead Time ...
Страница 347: ...X Chapter 10 General Purpose Time Base Free Running Timer 10 ...
Страница 361: ...XI Chapter 11 RTC Time Base Timer RTC TBT 11 ...
Страница 371: ...XII Chapter 12 Real Time Clock RTC 12 ...
Страница 389: ...XIII Chapter 13 Serial Interface 13 ...
Страница 458: ...Chapter 13 Serial Interface XIII 70 IIC Communication ...
Страница 459: ...XIV Chapter 14 DMA Controller 14 ...
Страница 472: ...Chapter 14 DMA Controller XIV 14 DMA Data Transfer ...
Страница 473: ...XV Chapter 15 Buzzer 15 ...
Страница 479: ...XVI Chapter 16 A D Converter ADC 16 ...
Страница 493: ...XVII Chapter 17 LCD 17 ...
Страница 530: ...Chapter 17 LCD XVII 38 LCD Display Examples ...
Страница 531: ...XVIII Chapter 18 ReRAM 18 ...
Страница 538: ...Chapter 18 ReRAM XVIII 8 Command Library ...
Страница 539: ...XIX Chapter 19 On Board Debugger 19 ...
Страница 542: ...Chapter 19 On Board Debugger XIX 4 List of on board debugging functions ...
Страница 543: ...XX Chapter 20 Appendix 20 ...
Страница 555: ...Chapter 20 Appendix Instruction map XX 13 ...