M16CSLASH29 datasheet(9/499 Pages) RENESAS

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A-2

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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