R5F21246SDFP Просмотр технического описания (PDF) - Renesas Electronics
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R5F21246SDFP Datasheet PDF : 525 Pages
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6.1.1 Monitoring Vdet0 ............................................................................................................................... 40
6.1.2 Monitoring Vdet1 ............................................................................................................................... 40
6.1.3 Monitoring Vdet2 ............................................................................................................................... 40
6.2 Voltage Monitor 0 Reset ......................................................................................................................... 41
6.3 Voltage Monitor 1 Interrupt and Voltage Monitor 1 Reset ..................................................................... 42
6.4 Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset ..................................................................... 44
7. Programmable I/O Ports ............................................................................................................... 46
7.1 Functions of Programmable I/O Ports ..................................................................................................... 46
7.2 Effect on Peripheral Functions ................................................................................................................ 47
7.3 Pins Other than Programmable I/O Ports ................................................................................................ 47
7.4 Port settings ............................................................................................................................................. 59
7.5 Unassigned Pin Handling ........................................................................................................................ 70
8. Processor Mode ............................................................................................................................ 71
8.1 Processor Modes ...................................................................................................................................... 71
9. Bus ................................................................................................................................................ 72
10. Clock Generation Circuit ............................................................................................................... 73
10.1 XIN Clock ............................................................................................................................................... 82
10.2 On-Chip Oscillator Clocks ...................................................................................................................... 83
10.2.1 Low-Speed On-Chip Oscillator Clock ................................................................................................ 83
10.2.2 High-Speed On-Chip Oscillator Clock ............................................................................................... 83
10.3 XCIN Clock ............................................................................................................................................. 84
10.4 CPU Clock and Peripheral Function Clock ............................................................................................. 85
10.4.1 System Clock ...................................................................................................................................... 85
10.4.2 CPU Clock .......................................................................................................................................... 85
10.4.3 Peripheral Function Clock (f1, f2, f4, f8, and f32) ............................................................................. 85
10.4.4 fOCO ................................................................................................................................................... 85
10.4.5 fOCO40M ........................................................................................................................................... 85
10.4.6 fOCO-F ............................................................................................................................................... 85
10.4.7 fOCO-S ............................................................................................................................................... 85
10.4.8 fOCO128 ............................................................................................................................................. 85
10.4.9 fC4 and fC32 ....................................................................................................................................... 86
10.5 Power Control .......................................................................................................................................... 87
10.5.1 Standard Operating Mode ................................................................................................................... 87
10.5.2 Wait Mode .......................................................................................................................................... 89
10.5.3 Stop Mode ........................................................................................................................................... 93
10.6 Oscillation Stop Detection Function ....................................................................................................... 96
10.6.1 How to Use Oscillation Stop Detection Function ............................................................................... 96
10.7 Notes on Clock Generation Circuit ......................................................................................................... 99
10.7.1 Stop Mode ........................................................................................................................................... 99
10.7.2 Wait Mode .......................................................................................................................................... 99
10.7.3 Oscillation Stop Detection Function ................................................................................................... 99
10.7.4 Oscillation Circuit Constants .............................................................................................................. 99
A-2
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