Renesas R8C series

A - 3
10.3 CPU Clock and Peripheral Function Clock................................................67
10.3.1 System Clock......................................................................................67
10.3.2 CPU Clock..........................................................................................67
10.3.3 Peripheral Function Clock (f1, f2, f4, f8, f32)......................................67
10.3.4 fRING and fRING128..........................................................................67
10.3.5 fRING-fast...........................................................................................67
10.3.6 fRING-S..............................................................................................67
10.4 Power Control............................................................................................68
10.4.1 Standard Operating Mode ..................................................................68
10.4.2 Wait Mode ..........................................................................................69
10.4.3 Stop Mode ..........................................................................................72
10.5 Oscillation Stop Detection Function ..........................................................74
10.5.1 How to Use Oscillation Stop Detection Function................................74
10.6 Notes on Clock Generation Circuit............................................................76
10.6.1 Stop Mode ..........................................................................................76
10.6.2 Wait Mode ..........................................................................................76
10.6.3 Oscillation Stop Detection Function....................................................76
10.6.4 Oscillation Circuit Constants...............................................................76
10.6.5 High-Speed On-Chip Oscillator Clock ................................................76
11. Protection 77
12. Interrupts 78
12.1 Interrupt Overview.....................................................................................78
12.1.1 Types of Interrupts..............................................................................78
12.1.2 Software Interrupts .............................................................................79
12.1.3 Special Interrupts................................................................................80
12.1.4 Peripheral Function Interrupt..............................................................80
12.1.5 Interrupts and Interrupt Vectors..........................................................81
12.1.6 Interrupt Control..................................................................................83
12.2 INT Interrupt ..............................................................................................91
12.2.1 INT0 Interrupt .....................................................................................91
12.2.2 INT0 Input Filter..................................................................................92
12.2.3 INT1 Interrupt .....................................................................................93
12.2.4 INT3 Interrupt .....................................................................................94
12.3 Key Input Interrupt.....................................................................................96