Preliminary User’s Manual U19014EJ1V0UD
12
13.4.2
Software interrupt request acknowledgement ......................................................................... 404
13.4.3 Multiple
interrupt servicing....................................................................................................... 405
13.4.4 Interrupt
request hold .............................................................................................................. 408
CHAPTER 14 STANDBY FUNCTION .................................................................................................. 409
14.1 Standby Function and Configuration................................................................................... 409
14.1.1 Standby
function...................................................................................................................... 409
14.1.2 Registers
controlling standby function..................................................................................... 409
14.2 Standby Function Operation................................................................................................. 412
14.2.1 HALT mode ............................................................................................................................. 412
14.2.2 STOP mode ............................................................................................................................ 416
CHAPTER 15 RESET FUNCTION........................................................................................................ 421
15.1 Register for Confirming Reset Source................................................................................. 429
CHAPTER 16 POWER-ON-CLEAR CIRCUIT...................................................................................... 430
16.1 Functions of Power-on-Clear Circuit.................................................................................... 430
16.2 Configuration of Power-on-Clear Circuit ............................................................................. 431
16.3 Operation of Power-on-Clear Circuit.................................................................................... 431
16.4 Cautions for Power-on-Clear Circuit .................................................................................... 433
CHAPTER 17 LOW-VOLTAGE DETECTOR ....................................................................................... 435
17.1 Functions of Low-Voltage Detector...................................................................................... 435
17.2 Configuration of Low-Voltage Detector ............................................................................... 435
17.3 Registers Controlling Low-Voltage Detector ...................................................................... 436
17.4 Operation of Low-Voltage Detector...................................................................................... 439
17.4.1 When
used as reset ................................................................................................................ 440
17.4.2 When
used
as interrupt ........................................................................................................... 442
17.5 Cautions for Low-Voltage Detector ...................................................................................... 444
CHAPTER 18 OPTION BYTE............................................................................................................... 447
18.1
Functions of Option Bytes .................................................................................................... 447
18.2
Format of Option Byte ........................................................................................................... 448
CHAPTER 19 FLASH MEMORY .......................................................................................................... 451
19.1 Internal Memory Size Switching Register............................................................................ 451
19.2 Internal Expansion RAM Size Switching Register .............................................................. 452
19.3 Writing with Flash Memory Programmer ............................................................................. 453
19.4 Programming
Environment................................................................................................... 456
19.5 Communication
Mode............................................................................................................ 456
19.6 Connection of Pins on Board................................................................................................ 458
19.6.1 FLMD0 pin............................................................................................................................... 458
19.6.2 Serial
interface pins................................................................................................................. 458
19.6.3 RESET pin .............................................................................................................................. 460
19.6.4 Port pins .................................................................................................................................. 460
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