R5F211A3DSP-U0 View Datasheet(PDF) - Renesas Electronics

Part Name

Description

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R5F211A3DSP-U0

RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER R8C FAMILY / R8C/1x SERIES

Renesas Electronics 

4. Special Function Registers (SFRs)

20

5. Programmable I/O Ports

24

5.1 Functions of Programmable I/O Ports .......................................................24

5.2 Effect on Peripheral Functions ..................................................................24

5.3 Pins Other than Programmable I/O Ports..................................................24

5.4 Port Settings..............................................................................................32

5.5 Unassigned Pin Handling ..........................................................................37

6. Resets

38

6.1 Hardware Reset ........................................................................................40

6.1.1 When Power Supply is Stable ............................................................40

6.1.2 Power On............................................................................................40

6.2 Power-On Reset Function .........................................................................42

6.3 Voltage Monitor 1 Reset ...........................................................................43

6.4 Voltage Monitor 2 Reset............................................................................43

6.5 Watchdog Timer Reset..............................................................................43

6.6 Software Reset..........................................................................................43

7. Voltage Detection Circuit

44

7.1 VCC Input Voltage.....................................................................................50

7.1.1 Monitoring Vdet1 ................................................................................50

7.1.2 Monitoring Vdet2 ................................................................................50

7.1.3 Digital Filter.........................................................................................50

7.2 Voltage Monitor 1 Reset............................................................................52

7.3 Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset .........................53

8. Processor Mode

55

8.1 Processor Modes ......................................................................................55

9. Bus

57

10. Clock Generation Circuit

58

10.1 Main Clock.................................................................................................65

10.2 On-Chip Oscillator Clocks .........................................................................66

10.2.1 Low-Speed On-Chip Oscillator Clock .................................................66

10.2.2 High-Speed On-Chip Oscillator Clock ................................................66

A-2

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