A - 2

6.1.1

Monitoring Vdet1 ............................................................................................................................... 36

6.1.2

Monitoring Vdet2 ............................................................................................................................... 36

6.2

Voltage Monitor 1 Interrupt and Voltage Monitor 1 Reset ..................................................................... 37

6.3

Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset ..................................................................... 39

7.

Programmable I/O Ports ............................................................................................................... 41

7.1

Functions of Programmable I/O Ports ..................................................................................................... 41

7.2

Effect on Peripheral Functions ................................................................................................................ 42

7.3

Pins Other than Programmable I/O Ports ................................................................................................ 42

7.4

Port Setting .............................................................................................................................................. 52

7.5

Unassigned Pin Handling ........................................................................................................................ 62

8.

Processor Mode ............................................................................................................................ 63

8.1

Processor Modes ...................................................................................................................................... 63

9.

Bus ................................................................................................................................................ 64

10.

Clock Generation Circuit ............................................................................................................... 65

10.1

XIN Clock ............................................................................................................................................... 73

10.2

On-Chip Oscillator Clocks ...................................................................................................................... 74

10.2.1

Low-Speed On-Chip Oscillator Clock ................................................................................................ 74

10.2.2

High-Speed On-Chip Oscillator Clock ............................................................................................... 74

10.3

CPU Clock and Peripheral Function Clock ............................................................................................. 75

10.3.1

System Clock ...................................................................................................................................... 75

10.3.2

CPU Clock .......................................................................................................................................... 75

10.3.3

Peripheral Function Clock (f1, f2, f4, f8, and f32) ............................................................................. 75

10.3.4

fOCO ................................................................................................................................................... 75

10.3.5

fOCO40M ........................................................................................................................................... 75

10.3.6

fOCO-F ............................................................................................................................................... 75

10.3.7

fOCO-S ............................................................................................................................................... 75

10.3.8

fOCO128 ............................................................................................................................................. 75

10.4

Power Control .......................................................................................................................................... 76

10.4.1

Standard Operating Mode ................................................................................................................... 76

10.4.2

Wait Mode .......................................................................................................................................... 78

10.4.3

Stop Mode ........................................................................................................................................... 82

10.5

Oscillation Stop Detection Function ....................................................................................................... 85

10.5.1

How to Use Oscillation Stop Detection Function ............................................................................... 85

10.6

Notes on Clock Generation Circuit ......................................................................................................... 88

10.6.1

Stop Mode ........................................................................................................................................... 88

10.6.2

Wait Mode .......................................................................................................................................... 88

10.6.3

Oscillation Stop Detection Function ................................................................................................... 88

10.6.4

Oscillation Circuit Constants .............................................................................................................. 88

11.

Protection ...................................................................................................................................... 89

12.

Interrupts ....................................................................................................................................... 90

12.1

Interrupt Overview .................................................................................................................................. 90

12.1.1

Types of Interrupts .............................................................................................................................. 90

12.1.2

Software Interrupts ............................................................................................................................. 91