R5F212A7SNFP-V2 View Datasheet(PDF) - Renesas Electronics
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R5F212A7SNFP-V2 Datasheet PDF : 609 Pages
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21. Electrical Characteristics ............................................................................................................ 520
22. Usage Notes ............................................................................................................................... 545
22.1 Notes on Clock Generation Circuit ....................................................................................................... 545
22.1.1 Stop Mode ......................................................................................................................................... 545
22.1.2 Wait Mode ........................................................................................................................................ 545
22.1.3 Oscillation Stop Detection Function ................................................................................................. 545
22.1.4 Oscillation Circuit Constants ............................................................................................................ 545
22.2 Notes on Interrupts ................................................................................................................................ 546
22.2.1 Reading Address 00000h .................................................................................................................. 546
22.2.2 SP Setting .......................................................................................................................................... 546
22.2.3 External Interrupt and Key Input Interrupt ....................................................................................... 546
22.2.4 Changing Interrupt Sources .............................................................................................................. 547
22.2.5 Changing Interrupt Control Register Contents ................................................................................. 548
22.3 Notes on Timers .................................................................................................................................... 549
22.3.1 Notes on Timer RA ........................................................................................................................... 549
22.3.2 Notes on Timer RB ........................................................................................................................... 550
22.3.3 Notes on Timer RC ........................................................................................................................... 554
22.3.4 Notes on Timer RD ........................................................................................................................... 555
22.3.5 Notes on Timer RE ........................................................................................................................... 561
22.3.6 Notes on Timer RF ........................................................................................................................... 564
22.4 Notes on Serial Interface ....................................................................................................................... 565
22.5 Notes on Clock Synchronous Serial Interface ....................................................................................... 566
22.5.1 Notes on Clock Synchronous Serial I/O with Chip Select ............................................................... 566
22.5.2 Notes on I2C bus Interface ................................................................................................................ 566
22.6 Notes on Hardware LIN ........................................................................................................................ 567
22.7 Notes on A/D Converter ........................................................................................................................ 568
22.8 Notes on Flash Memory ........................................................................................................................ 569
22.8.1 CPU Rewrite Mode ........................................................................................................................... 569
22.9 Notes on Noise ...................................................................................................................................... 572
22.9.1 Inserting a Bypass Capacitor between VCC and VSS Pins as a Countermeasure against Noise and
Latch-up ............................................................................................................................................ 572
22.9.2 Countermeasures against Noise Error of Port Control Registers ..................................................... 572
23. Notes on On-Chip Debugger ...................................................................................................... 573
24. Notes on Emulator Debugger ..................................................................................................... 574
Appendix 1. Package Dimensions ........................................................................................................ 575
Appendix 2. Connection Examples between Serial Writer and On-Chip Debugging Emulator ............ 577
Appendix 3. Example of Oscillation Evaluation Circuit ......................................................................... 578
Index ..................................................................................................................................................... 579
A-6
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