R5F3650MDFB datasheet(9/829 Pages) RENESAS

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A - 2

Special Function Registers (SFRs) ........................................................ 38

4.1

SFRs ................................................................................................................. 38

4.2

Notes on SFRs .................................................................................................. 54

4.2.1

Protection ............................................................................................... 55

5.1

Introduction........................................................................................................ 55

5.2

Register ............................................................................................................. 55

5.2.1

Protect Register (PRCR) ............................................................................ 55

5.3

Notes on Protection........................................................................................... 57

Resets .................................................................................................... 58

6.1

Introduction........................................................................................................ 58

6.2

Registers ........................................................................................................... 59

6.2.1

Processor Mode Register 0 (PM0) ............................................................. 60

6.2.2

Reset Source Determine Register (RSTFR) .............................................. 61

6.3

Optional Function Select Area........................................................................... 63

6.3.1

Optional Function Select Address 1 (OFS1) .............................................. 63

6.4

Operations......................................................................................................... 65

6.4.1

Status After Reset....................................................................................... 65

6.4.2

Hardware Reset.......................................................................................... 68

6.4.3

Power-On Reset Function .......................................................................... 69

6.4.4

Voltage Monitor 0 Reset ............................................................................. 70

6.4.5

Voltage Monitor 1 Reset ............................................................................. 70

6.4.6

Voltage Monitor 2 Reset ............................................................................. 71

6.4.7

Oscillation Stop Detection Reset ................................................................ 71

6.4.8

Watchdog Timer Reset ............................................................................... 72

6.4.9

Software Reset ........................................................................................... 72

6.4.10

Cold Start-Up/Warm Start-Up Discrimination.............................................. 73

6.5

Notes on Resets................................................................................................ 74

6.5.1

Power Supply Rising Gradient.................................................................... 74

6.5.2

Power-On Reset ......................................................................................... 74

6.5.3

OSDR Bit (Oscillation Stop Detection Reset Detection Flag) ..................... 74

Voltage Detector..................................................................................... 75

7.1

Introduction........................................................................................................ 75

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