M16C65 Datasheet, PDF (15/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

14.7.9 Multiple Interrupts ..................................................................................... 246
14.8 INT Interrupt .................................................................................................... 247
14.9 NMI Interrupt ................................................................................................... 248
14.10 Key Input Interrupt........................................................................................... 248
14.11 Address Match Interrupt .................................................................................. 249
14.12 Non-Maskable Interrupt Source Discrimination............................................... 250
14.13 Notes on Interrupts.......................................................................................... 251
14.13.1 Reading Address 00000h ......................................................................... 251
14.13.2 SP Setting................................................................................................. 251
14.13.3 NMI Interrupt............................................................................................. 251
14.13.4 Changing an Interrupt Source .................................................................. 252
14.13.5 Rewriting the Interrupt Control Register ................................................... 253
14.13.6 INT Interrupt ............................................................................................. 254
15. Watchdog Timer ................................................................................... 255
15.1 Introduction...................................................................................................... 255
15.2 Registers ......................................................................................................... 256
15.2.1 Voltage Monitor 2 Circuit Control Register (VW2C).................................. 256
15.2.2 Count Source Protection Mode Register (CSPR)..................................... 257
15.2.3 Watchdog Timer Reset Register (WDTR) ................................................ 258
15.2.4 Watchdog Timer Start Register (WDTS)................................................... 258
15.2.5 Watchdog Timer Control Register (WDC) ................................................ 259
15.3 Optional Function Select Area......................................................................... 260
15.3.1 Optional Function Select Address 1 (OFS1) ............................................ 260
15.4 Operations....................................................................................................... 261
15.4.1 Count Source Protection Mode Disabled ................................................. 261
15.4.2 Count Source Protection Mode Enabled .................................................. 262
15.5 Interrupts ......................................................................................................... 263
15.6 Notes on Watchdog Timer............................................................................... 264
16. DMAC................................................................................................... 265
16.1 Introduction...................................................................................................... 265
16.2 Registers ......................................................................................................... 267
16.2.1 DMAi Source Pointer (SARi) (i = 0 to 3) ................................................ 268
16.2.2 DMAi Destination Pointer (DARi) (i = 0 to 3) ......................................... 268
16.2.3 DMAi Transfer Counter (TCRi) (i = 0 to 3) ............................................. 269
A-8