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16
User’s Manual U13570EJ3V1UD
13.4
Cautions .................................................................................................................................. 267
13.4.1
General cautions when using watchdog timer ............................................................................ 267
13.4.2
Cautions about
PD784218A Subseries watchdog timer ........................................................... 267
CHAPTER 14 A/D CONVERTER ........................................................................................................... 268
14.1
Functions ................................................................................................................................ 268
14.2
Configuration .......................................................................................................................... 268
14.3
Control Registers ................................................................................................................... 271
14.4
Operations .............................................................................................................................. 274
14.4.1
Basic operations of A/D converter .............................................................................................. 274
14.4.2
Input voltage and conversion result ............................................................................................ 276
14.4.3
Operation mode of A/D converter ............................................................................................... 277
14.5
Cautions .................................................................................................................................. 279
CHAPTER 15 D/A CONVERTER ........................................................................................................ 285
15.1
Function .................................................................................................................................. 285
15.2
Configuration .......................................................................................................................... 285
15.3
Control Registers ................................................................................................................... 287
15.4
Operation ................................................................................................................................ 288
15.5
Cautions .................................................................................................................................. 288
CHAPTER 16 SERIAL INTERFACE OVERVIEW .............................................................................. 290
CHAPTER 17 ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O .............................. 292
17.1
Switching Between Asynchronous Serial Interface Mode and 3-Wire Serial I/O Mode ... 293
17.2
Asynchronous Serial Interface Mode ................................................................................... 295
17.2.1
Configuration .............................................................................................................................. 295
17.2.2
Control registers ......................................................................................................................... 298
17.3
Operation ................................................................................................................................ 303
17.3.1
Operation stop mode .................................................................................................................. 303
17.3.2
Asynchronous serial interface (UART) mode ............................................................................. 304
17.3.3
Infrared data transfer mode ........................................................................................................ 315
17.3.4
Standby mode operation ............................................................................................................ 318
17.4
3-Wire Serial I/O Mode ........................................................................................................... 319
17.4.1
Configuration .............................................................................................................................. 319
17.4.2
Control registers ......................................................................................................................... 321
17.4.3
Operation .................................................................................................................................... 322
CHAPTER 18 3-WIRE SERIAL I/O MODE ....................................................................................... 325
18.1
Function .................................................................................................................................. 325
18.2
Configuration .......................................................................................................................... 325
18.3
Control Registers ................................................................................................................... 327
18.4
Operation ................................................................................................................................ 329
CHAPTER 19 I2C BUS MODE (
PD784216AY, 784218AY SUBSERIES ONLY) ..........................332
19.1
Overview of Function ............................................................................................................. 332
19.2
Configuration .......................................................................................................................... 333
19.3
Control Registers ................................................................................................................... 336
19.4
I2C Bus Mode Function .......................................................................................................... 347
19.4.1
Pin Configuration ........................................................................................................................ 347