User’s Manual U13850EJ4V0UM
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
10.3 I
2
C Bus................................................................................................................................. 252
10.3.1 Configuration .........................................................................................................................255
10.3.2 I
2
C control register .................................................................................................................257
10.3.3 I
2
C bus mode functions..........................................................................................................268
10.3.4 I
2
C bus definitions and control methods ................................................................................269
10.3.5 I
2
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
