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R5F21142SP View Datasheet(PDF) - Renesas Electronics

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R5F21142SP Datasheet PDF : 277 Pages
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4. Special Function Register (SFR)
15
5. Reset
19
5.1 Hardware Reset ........................................................................................21
5.1.1 When the power supply is stable........................................................21
5.1.2 Power on ............................................................................................21
5.2 Power-On Reset Function .........................................................................23
5.3 Voltage Monitor 1 Reset ...........................................................................24
5.4 Voltage Monitor 2 Reset............................................................................24
5.5 Watchdog Timer Reset..............................................................................24
5.6 Software Reset..........................................................................................24
6. Voltage Detection Circuit
25
6.1 Monitoring VCC Input Voltage...................................................................31
6.1.1 Monitoring Vdet1 ................................................................................31
6.1.2 Monitoring Vdet2 ................................................................................31
6.2 Voltage Monitor 1 Reset............................................................................32
6.3 Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset .........................33
7. Processor Mode
35
7.1 Types of Processor Mode .........................................................................35
8. Bus
37
9. Clock Generation Circuit
38
9.1 Main Clock.................................................................................................45
9.2 On-Chip Oscillator Clock ...........................................................................46
9.2.1 Low-Speed On-Chip Oscillator Clock .................................................46
9.2.2 High-Speed On-Chip Oscillator Clock ................................................46
9.3 CPU Clock and Peripheral Function Clock................................................47
9.3.1 System Clock......................................................................................47
9.3.2 CPU Clock ..........................................................................................47
9.3.3 Peripheral Function Clock (f1, f2, f4, f8, f32) ......................................47
9.3.4 fRING and fRING128..........................................................................47
9.3.5 fRING-fast...........................................................................................47
9.3.6 fRING-S ..............................................................................................47
9.4 Power Control............................................................................................48
A-2
 

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