Datasheet
23.6.1 Noise elimination.........................................................................................................................1294
23.6.2 Edge detection ............................................................................................................................1294
23.7 Interrupt Acknowledge Time of CPU.................................................................................. 1302
23.8 Periods in Which Interrupts Are Not Acknowledged by CPU ......................................... 1303
23.9 Cautions ................................................................................................................................ 1303
CHAPTER 24 KEY INTERRUPT FUNCTION ................................................................................... 1304
24.1 Function ................................................................................................................................ 1304
24.2 Register ................................................................................................................................. 1305
24.3 Cautions ................................................................................................................................ 1305
CHAPTER 25 STANDBY FUNCTION ................................................................................................ 1306
25.1 Overview ............................................................................................................................... 1306
25.2 Registers ............................................................................................................................... 1308
25.3 HALT Mode ........................................................................................................................... 1311
25.3.1 Setting and operation status .......................................................................................................1311
25.3.2 Releasing HALT mode ................................................................................................................1311
25.4 IDLE1 Mode........................................................................................................................... 1313
25.4.1 Setting and operation status .......................................................................................................1313
25.4.2 Releasing IDLE1 mode ...............................................................................................................1314
25.5 IDLE2 Mode........................................................................................................................... 1316
25.5.1 Setting and operation status .......................................................................................................1316
25.5.2 Releasing IDLE2 mode ...............................................................................................................1317
25.5.3 Securing setup time when releasing IDLE2 mode.......................................................................1319
25.6 STOP Mode ........................................................................................................................... 1320
25.6.1 Setting and operation status .......................................................................................................1320
25.6.2 Releasing STOP mode ...............................................................................................................1320
25.6.3 Securing oscillation stabilization time when releasing STOP mode ............................................1323
25.7 Subclock Operation Mode................................................................................................... 1324
25.7.1 Setting and operation status .......................................................................................................1324
25.7.2 Releasing subclock operation mode ...........................................................................................1324
25.8 Sub-IDLE Mode..................................................................................................................... 1326
25.8.1 Setting and operation status .......................................................................................................1326
25.8.2 Releasing sub-IDLE mode ..........................................................................................................1326
CHAPTER 26 RESET FUNCTIONS ................................................................................................... 1328
26.1 Overview ............................................................................................................................... 1328
26.2 Registers to Check Reset Source ...................................................................................... 1329
26.3 Operation .............................................................................................................................. 1330
26.3.1 Reset operation via RESET pin ..................................................................................................1330
26.3.2 Reset operation by watchdog timer 2..........................................................................................1332
26.3.3 Reset operation by low-voltage detector .....................................................................................1334
26.3.4 Operation after reset release ......................................................................................................1335
26.3.5 Reset function operation flow......................................................................................................1336
CHAPTER 27 CLOCK MONITOR ...................................................................................................... 1337
27.1 Functions .............................................................................................................................. 1337
27.2 Configuration........................................................................................................................ 1337
27.3 Register ................................................................................................................................. 1338
27.4 Operation .............................................................................................................................. 1339
CHAPTER 28 LOW-VOLTAGE DETECTOR (LVI) ........................................................................... 1342
28.1 Functions .............................................................................................................................. 1342
28.2 Configuration........................................................................................................................ 1342
28.3 Registers ............................................................................................................................... 1343
28.4 Operation .............................................................................................................................. 1345
28.4.1 To use for internal reset signal....................................................................................................1345
28.4.2 To use for interrupt......................................................................................................................1346