NEC V850/SB1TM User Manual page 13

CHAPTER 8 WATCH TIMER ......................................................................................................... 230
8.1 Function .............................................................................................................................. 230
8.2 Configuration...................................................................................................................... 231
8.3 Watch Timer Control Register........................................................................................... 232
8.4 Operation............................................................................................................................. 234
8.4.1 Operation as watch timer....................................................................................................... 234
8.4.2 Operation as interval timer..................................................................................................... 234
8.4.3 Cautions................................................................................................................................. 235
CHAPTER 9 WATCHDOG TIMER................................................................................................. 236
9.1 Functions ............................................................................................................................ 236
9.2 Configuration ...................................................................................................................... 238
9.3 Watchdog Timer Control Register .................................................................................... 238
9.4 Operation............................................................................................................................. 241
9.4.1 Operation as watchdog timer................................................................................................. 241
9.4.2 Operation as interval timer..................................................................................................... 242
9.5 Standby Function Control Register.................................................................................. 243
CHAPTER 10 SERIAL INTERFACE FUNCTION ......................................................................... 244
10.1 Overview ............................................................................................................................. 244
10.2 3-Wire Serial I/O (CSI0 to CSI3) ......................................................................................... 244
10.2.1 Configuration ......................................................................................................................... 245
10.2.2 CSIn control registers ............................................................................................................ 246
10.2.3 Operations ............................................................................................................................. 249
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10.3 I C Bus................................................................................................................................. 252
10.3.1 Configuration ......................................................................................................................... 255
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10.3.2 I C control register ................................................................................................................. 257
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10.3.3 I C bus mode functions.......................................................................................................... 268
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10.3.4 I C bus definitions and control methods ................................................................................ 269
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10.3.5 I C interrupt requests (INTIICn) ............................................................................................. 276
10.3.6 Interrupt request (INTIICn) generation timing and wait control .............................................. 294
10.3.7 Address match detection method .......................................................................................... 295
10.3.8 Error detection ....................................................................................................................... 295
10.3.9 Extension code ...................................................................................................................... 295
10.3.10 Arbitration .............................................................................................................................. 296
10.3.11 Wake up function................................................................................................................... 298
10.3.12 Communication reservation ................................................................................................... 299
10.3.13 Cautions................................................................................................................................. 302
10.3.14 Communication operations .................................................................................................... 303
10.3.15 Timing of data communication............................................................................................... 305
10.4 Asynchronous Serial Interface (UART0, UART1) ............................................................ 312
10.4.1 Configuration ......................................................................................................................... 312
10.4.2 UARTn control registers ........................................................................................................ 314
10.4.3 Operations ............................................................................................................................. 319
10.4.4 Standby function .................................................................................................................... 331
10.5 3-Wire Variable-Length Serial I/O (CSI4) .......................................................................... 332
10.5.1 Configuration ......................................................................................................................... 332
User's Manual U13850EJ4V0UM
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