M16C29 Datasheet, PDF (9/499 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/Tiny SERIES

5. Resets _____________________________________________________ 35
5.1 Hardware Reset .............................................................................................................. 35
5.1.1 Hardware Reset 1 .................................................................................................... 35
5.1.2 Brown-Out Detection Reset (Hardware Reset 2) ..................................................... 35
5.2 Software Reset ............................................................................................................... 36
5.3 Watchdog Timer Reset ................................................................................................... 36
5.4 Oscillation Stop Detection Reset .................................................................................... 36
5.5 Voltage Detection Circuit ................................................................................................ 38
5.5.1 Low Voltage Detection Interrupt ............................................................................... 41
5.5.2. Limitations on Stop Mode ........................................................................................ 43
5.5.3. Limitations on WAIT Instruction ............................................................................... 43
6. Processor Mode _____________________________________________ 44
7. Clock Generation Circuit _______________________________________ 47
7.1 Main Clock ...................................................................................................................... 54
7.2 Sub Clock ....................................................................................................................... 55
7.3 On-chip Oscillator Clock ................................................................................................. 56
7.4 PLL Clock ....................................................................................................................... 56
7.5 CPU Clock and Peripheral Function Clock ..................................................................... 58
7.5.1 CPU Clock ................................................................................................................ 58
7.5.2 Peripheral Function Clock(f1, f2, f8, f32, f1SIO, f2SIO, f8SIO, f32SIO, fAD, fC32, fCAN0) ...... 58
7.5.3 ClockOutput Function ............................................................................................... 58
7.6 Power Control ................................................................................................................. 59
7.6.1 Normal Operation Mode ........................................................................................... 59
7.6.2 Wait Mode ................................................................................................................ 60
7.6.3 Stop Mode ............................................................................................................... 62
7.7 System Clock Protective Function .................................................................................. 66
7.8 Oscillation Stop and Re-oscillation Detect Function ....................................................... 66
7.8.1 Operation When CM27 bit = 0 (Oscillation Stop Detection Reset)........................... 67
7.8.2 Operation When CM27 bit = 1 (Oscillation Stop and Re-oscillation Detect Interrupt) . 67
7.8.3 How to Use Oscillation Stop and Re-oscillation Detect Function ............................. 68
8. Protection __________________________________________________ 69
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