User’s Manual U17893EJ8V0UD
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15.5.5 UART consecutive reception + ACK transmission ........................................................................589
15.5.6 Holding DMA transfer pending by DWAITn ...................................................................................591
15.5.7 Forced termination by software .....................................................................................................592
15.6 Cautions on Using DMA Controller ........................................................................................ 594
CHAPTER 16 INTERRUPT FUNCTIONS ............................................................................................ 597
16.1 Interrupt Function Types ......................................................................................................... 597
16.2 Interrupt Sources and Configuration ..................................................................................... 597
16.3 Registers Controlling Interrupt Functions............................................................................. 602
16.4 Interrupt Servicing Operations ............................................................................................... 612
16.4.1 Maskable interrupt acknowledgment .............................................................................................612
16.4.2 Software interrupt request acknowledgment .................................................................................614
16.4.3 Multiple interrupt servicing.............................................................................................................615
16.4.4 Interrupt request hold ....................................................................................................................618
CHAPTER 17 KEY INTERRUPT FUNCTION ..................................................................................... 619
17.1 Functions of Key Interrupt ...................................................................................................... 619
17.2 Configuration of Key Interrupt ................................................................................................ 619
17.3 Register Controlling Key Interrupt ......................................................................................... 620
CHAPTER 18 STANDBY FUNCTION .................................................................................................. 621
18.1 Standby Function and Configuration ..................................................................................... 621
18.1.1 Standby function ...........................................................................................................................621
18.1.2 Registers controlling standby function...........................................................................................621
18.2 Standby Function Operation ................................................................................................... 624
18.2.1 HALT mode ...................................................................................................................................624
18.2.2 STOP mode ..................................................................................................................................629
CHAPTER 19 RESET FUNCTION........................................................................................................ 636
19.1 Register for Confirming Reset Source ................................................................................... 644
CHAPTER 20 POWER-ON-CLEAR CIRCUIT...................................................................................... 645
20.1 Functions of Power-on-Clear Circuit...................................................................................... 645
20.2 Configuration of Power-on-Clear Circuit ............................................................................... 646
20.3 Operation of Power-on-Clear Circuit ...................................................................................... 646
20.4 Cautions for Power-on-Clear Circuit ...................................................................................... 649
CHAPTER 21 LOW-VOLTAGE DETECTOR ....................................................................................... 651
21.1 Functions of Low-Voltage Detector........................................................................................ 651
21.2 Configuration of Low-Voltage Detector ................................................................................. 652
21.3 Registers Controlling Low-Voltage Detector......................................................................... 652
21.4 Operation of Low-Voltage Detector ........................................................................................ 657
21.4.1 When used as reset ......................................................................................................................658
21.4.2 When used as interrupt .................................................................................................................664
21.5 Cautions for Low-Voltage Detector ........................................................................................ 670