17
11.6.2
Cautions .......................................................................................................................... 293
Operation as interval timer (2)...........................................................................................
291
11.7
CHAPTER 12 WATCHDOG TIMER FUNCTION .............................................................................. 295
12.1
12.2
12.3
Configuration.................................................................................................................. 295
Watchdog Timer Mode Register (WDM) ...................................................................... 296
Operation......................................................................................................................... 298
12.3.1
Count operation..................................................................................................................
12.3.2
Interrupt priorities ...............................................................................................................
Cautions .......................................................................................................................... 299
12.4.1
General cautions on use of watchdog timer .....................................................................
12.4.2
Cautions on
m
PD784046 subseries watchdog timer ........................................................
298
298
12.4
299
300
CHAPTER 13 A/D CONVERTER ...................................................................................................... 301
13.1
13.2
13.3
13.4
Configuration.................................................................................................................. 301
A/D Converter Mode Register (ADM)........................................................................... 305
A/D Conversion Result Registers (ADCR0 through ADCR7) ................................... 308
Operation......................................................................................................................... 310
13.4.1
Basic A/D converter operation...........................................................................................
13.4.2
Select mode .......................................................................................................................
13.4.3
Scan mode .........................................................................................................................
13.4.4
A/D Conversion Operation Start by Software ...................................................................
13.4.5
A/D Conversion Operation Start by Hardware..................................................................
External Circuit of A/D Converter ................................................................................ 323
Cautions .......................................................................................................................... 323
310
314
316
318
320
13.5
13.6
CHAPTER 14 ASYNCHRONOUS SERIAL INTERFACE/3-WIRE SERIAL I/O .............................. 325
14.1
Switching between Asynchronous Serial Interface Mode and
3-wire Serial I/O Mode ................................................................................................... 326
Asynchronous Serial Interface Mode .......................................................................... 327
14.2.1
Configuration in asynchronous serial interface mode ......................................................
14.2.2
Asynchronous serial interface control registers................................................................
14.2.3
Data format.........................................................................................................................
14.2.4
Parity types and operations ...............................................................................................
14.2.5
Transmission ......................................................................................................................
14.2.6
Reception ...........................................................................................................................
14.2.7
Receive errors ....................................................................................................................
14.2.8
Transmitting/receiving data with macro service................................................................
3-wire Serial I/O Mode ................................................................................................... 342
14.3.1
Configuration in 3-Wire Serial I/O Mode ...........................................................................
14.3.2
Clocked serial interface mode registers (CSIM1, CSIM2) ...............................................
14.3.3
Basic operation timing .......................................................................................................
14.3.4
Operation when transmission only is enabled ..................................................................
14.3.5
Operation when reception only is enabled .......................................................................
14.3.6
Operation when transmission/reception is enabled .........................................................
14.3.7
Corrective action in case of slippage of serial clock and shift operations ......................
14.2
327
330
334
335
336
337
338
340
14.3
342
345
346
348
349
350
350