5.4 Voltage Detection Circuit ............................................................................................. 21
5.4.1 Voltage Detection Interrupt ..................................................................................................................26
5.4.2 Exiting Stop Mode on a Voltage Detection Interrupt .........................................................................28
Chapter 6. Clock Generating Circuit.................................. 29
6.1 Main Clock.....................................................................................................................34
6.2 On-Chip Oscillator Clock ............................................................................................. 35
6.2.1 Low-speed On-Chip Oscillator ............................................................................................................35
6.2.2 High-speed On-Chip Oscillator............................................................................................................35
6.3 CPU Clock and Peripheral Function Clock ................................................................ 36
6.3.1 CPU Clock..............................................................................................................................................36
6.3.2 Peripheral Function Clock (f1, f2, f8, f32, fAD, f1SIO, f8SIO, f32SIO) ....................................................... 36
6.3.3 fRING and fRING128 ...................................................................................................................................................................36
6.3.4 fRING-fast ......................................................................................................................................................................................36
6.4 Power Control ...............................................................................................................37
6.4.1 Normal Operation Mode .......................................................................................................................37
6.4.2 Wait Mode ..............................................................................................................................................39
6.4.3 Stop Mode..............................................................................................................................................40
6.5 Oscillation Stop Detection Function........................................................................... 42
6.5.1 How to Use Oscillation Stop Detection Function ..............................................................................42
Chapter 7. Protection.......................................................... 44
Chapter 8. Processor Mode................................................ 45
8.1 Types of Processor Mode ............................................................................................ 45
Chapter 9. Bus ..................................................................... 46
Chapter 10. Interrupt........................................................... 47
10.1 Interrupt Overview ...................................................................................................... 47
10.1.1 Type of Interrupts................................................................................................................................47
10.1.2 Software Interrupts .............................................................................................................................48
10.1.3 Hardware Interrupts ............................................................................................................................49
10.1.4 Interrupts and Interrupt Vector ..........................................................................................................50
10.1.5 Interrupt Control .................................................................................................................................52
10.2 _I_N__T__ Interrupt ................................................................................................................60
________
10.2.1 INT0 Interrupt ......................................................................................................................................60
_______
10.2.2 INT0 Input Filter...................................................................................................................................61
______
______
10.2.3 INT1 Interrupt and INT2 Interrupt ......................................................................................................62
______
10.2.4 INT3 Interrupt ......................................................................................................................................63
10.3 Key Input Interrupt ..................................................................................................... 65
10.4 Address Match Interrupt ............................................................................................ 66
Chapter 11. Watchdog Timer .............................................. 68
Chapter 12. Timers .............................................................. 70
12.1 Timer X ........................................................................................................................71
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