M16C65 Datasheet, PDF (26/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

30.8.6 EW0 Mode................................................................................................ 724
30.8.7 EW1 Mode................................................................................................ 729
30.9 Standard Serial I/O Mode ................................................................................ 734
30.9.1 ID Code Check Function .......................................................................... 735
30.9.2 Forced Erase Function ............................................................................. 736
30.9.3 Standard Serial I/O Mode Disable Function ............................................. 736
30.9.4 Standard Serial I/O Mode 1 ...................................................................... 737
30.9.5 Standard Serial I/O Mode 2 ...................................................................... 739
30.9.6 Parallel I/O Mode...................................................................................... 740
30.10 Notes on Flash Memory .................................................................................. 741
30.10.1 Functions to Prevent Flash Memory from Being Rewritten ...................... 741
30.10.2 Reading of Data Flash.............................................................................. 741
30.10.3 CPU Rewrite Mode................................................................................... 741
30.10.4 Standard Serial I/O Mode ......................................................................... 743
31. Precautions .......................................................................................... 744
31.1 OFS1 Address and ID Code Storage Address ................................................ 744
31.2 Notes on Noise................................................................................................ 744
31.3 Notes on SFRs ................................................................................................ 746
31.3.1 Register Settings ...................................................................................... 746
31.4 Notes on Protection......................................................................................... 747
31.5 Notes on Resets.............................................................................................. 748
31.5.1 Power Supply Rising Gradient.................................................................. 748
31.5.2 Power-On Reset ....................................................................................... 748
31.5.3 OSDR Bit (Oscillation Stop Detection Reset Detection Flag) ................... 748
31.6 Notes on Clock Generator............................................................................... 749
31.6.1 Oscillation Circuit Using an Oscillator....................................................... 749
31.6.2 Noise Countermeasure............................................................................. 750
31.6.3 CPU ClockW............................................................................................. 751
31.6.4 Oscillation Stop, Re-Oscillation Detect Function ...................................... 751
31.6.5 PLL Frequency Synthesizer ..................................................................... 752
31.7 Notes on Power Control .................................................................................. 753
31.7.1 CPU Clock ................................................................................................ 753
31.7.2 Wait Mode ................................................................................................ 753
31.7.3 Stop Mode ................................................................................................ 754
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