M16C28 Datasheet, PDF (15/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

20. Precautions ............................................................................................... 350
20.1 SFR ............................................................................................................................ 350
20.1.1 For 80-Pin and 85-Pin Package ........................................................................... 350
20.1.2 For 64-Pin Package ............................................................................................. 350
22.1.3 Register Setting .................................................................................................... 350
20.1.4 For Flash Memory (128K+4K) Version and Mask ROM Version .......................... 351
20.2 Clock Generation Circuit ............................................................................................. 352
20.2.1 PLL Frequency Synthesizer ................................................................................. 352
20.2.2 Power Control ...................................................................................................... 353
20.3 Protection ................................................................................................................... 355
20.4 Interrupts .................................................................................................................... 356
20.4.1 Reading Address 0000016 .....................................................................................................356
20.4.2 Setting the SP ...................................................................................................... 356
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20.4.3 NMI Interrupt ....................................................................................................... 356
20.4.4 Changing the Interrupt Generate Factor .............................................................. 356
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20.4.5 INT Interrupt ......................................................................................................... 357
20.4.6 Rewrite the Interrupt Control Register .................................................................. 358
20.4.7 Watchdog Timer Interrupt ..................................................................................... 358
20.5 DMAC ......................................................................................................................... 359
20.5.1 Write to DMAE Bit in DMiCON Register (i = 0, 1) ................................................ 359
20.6 Timer ........................................................................................................................... 360
20.6.1 Timer A ................................................................................................................. 360
20.6.2 Timer B ................................................................................................................. 363
20.6.3 Three-phase Motor Control Timer Function ......................................................... 364
20.7 Timer S ....................................................................................................................... 365
20.7.1 Rewrite the G1IR Register .................................................................................. 365
20.7.2 Rewrite the ICOCiIC Register ............................................................................. 366
20.7.3 Waveform Generating Function .......................................................................... 366
20.7.4 IC/OC Base Timer Interrupt .................................................................................. 366
20.8 Serial I/O ..................................................................................................................... 367
20.8.1 Clock-Synchronous Serial I/O .............................................................................. 367
20.8.2 UART Mode .......................................................................................................... 368
20.8.3 SI/O3, SI/O4 ......................................................................................................... 368
20.9 A/D Converter ............................................................................................................. 369
20.10 Multi-master I²C bus Interface ................................................................................. 371
20.10.1 Writing to the S00 Register ................................................................................ 371
20.10.2 AL Flag ............................................................................................................... 371
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