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R5F21331ANFP Datasheet(PDF) 9 Page - Renesas Technology Corp

Part # R5F21331ANFP
Description  MCU M16C FAMILY / R8C/Tiny SERIES
Download  617 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

R5F21331ANFP Datasheet(HTML) 9 Page - Renesas Technology Corp

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A - 2
5.7
Cold Start-Up/Warm Start-Up Determination Function ......................................................................... 36
5.8
Reset Source Determination Function ..................................................................................................... 36
6.
Voltage Detection Circuit .............................................................................................................. 37
6.1
Overview ................................................................................................................................................. 37
6.2
Registers .................................................................................................................................................. 41
6.2.1
Voltage Monitor Circuit/Comparator A Control Register (CMPA) ................................................... 41
6.2.2
Voltage Monitor Circuit Edge Select Register (VCAC) .................................................................... 42
6.2.3
Voltage Detect Register (VCA1) ........................................................................................................ 42
6.2.4
Voltage Detect Register 2 (VCA2) ..................................................................................................... 43
6.2.5
Voltage Detection 1 Level Select Register (VD1LS) ......................................................................... 44
6.2.6
Voltage Monitor 0 Circuit Control Register (VW0C) ........................................................................ 45
6.2.7
Voltage Monitor 1 Circuit Control Register (VW1C) ........................................................................ 46
6.2.8
Voltage Monitor 2 Circuit Control Register (VW2C) ........................................................................ 47
6.2.9
Option Function Select Register (OFS) .............................................................................................. 48
6.3
VCC Input Voltage .................................................................................................................................. 49
6.3.1
Monitoring Vdet0 ............................................................................................................................... 49
6.3.2
Monitoring Vdet1 ............................................................................................................................... 49
6.3.3
Monitoring Vdet2 ............................................................................................................................... 49
6.4
Voltage Monitor 0 Reset ......................................................................................................................... 50
6.5
Voltage Monitor 1 Interrupt .................................................................................................................... 51
6.6
Voltage Monitor 2 Interrupt .................................................................................................................... 53
7.
I/O Ports ........................................................................................................................................ 55
7.1
Functions of I/O Ports ............................................................................................................................. 55
7.2
Effect on Peripheral Functions ................................................................................................................ 56
7.3
Pins Other than I/O Ports ......................................................................................................................... 56
7.4
Registers .................................................................................................................................................. 68
7.4.1
Port Pi Direction Register (PDi) (i = 0 to 4) ....................................................................................... 68
7.4.2
Port Pi Register (Pi) (i = 0 to 4) .......................................................................................................... 69
7.4.3
Timer RA Pin Select Register (TRASR) ............................................................................................ 70
7.4.4
Timer RB/RC Pin Select Register (TRBRCSR) ................................................................................. 70
7.4.5
Timer RC Pin Select Register 0 (TRCPSR0) ..................................................................................... 71
7.4.6
Timer RC Pin Select Register 1 (TRCPSR1) ..................................................................................... 72
7.4.7
UART0 Pin Select Register (U0SR) ................................................................................................... 73
7.4.8
UART1 Pin Select Register (U1SR) ................................................................................................... 73
7.4.9
UART2 Pin Select Register 0 (U2SR0) .............................................................................................. 74
7.4.10
UART2 Pin Select Register 1 (U2SR1) .............................................................................................. 74
7.4.11
SSU/IIC Pin Select Register (SSUIICSR) .......................................................................................... 75
7.4.12
INT Interrupt Input Pin Select Register (INTSR) ............................................................................... 75
7.4.13
Pull-Up Control Register 0 (PUR0) .................................................................................................... 76
7.4.14
Pull-Up Control Register 1 (PUR1) .................................................................................................... 76
7.4.15
Port P1 Drive Capacity Control Register (P1DRR) ............................................................................ 77
7.4.16
Port P2 Drive Capacity Control Register (P2DRR) ............................................................................ 77
7.4.17
Drive Capacity Control Register 0 (DRR0) ........................................................................................ 78
7.4.18
Drive Capacity Control Register 1 (DRR1) ........................................................................................ 79
7.4.19
Input Threshold Control Register 0 (VLT0) ....................................................................................... 80
7.4.20
Input Threshold Control Register 1 (VLT1) ....................................................................................... 81
7.5
Port Settings ............................................................................................................................................ 82


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