FPB RL78F25 Arduino Function list - renesas/Arduino GitHub Wiki

FPB-RL78F25

Description

  • The FPB-RL78F25 is provided with interface pins for Arduino Uno conversion.

1. Function List

  • A Function　list of the FPB-RL78F25 is shown below.
No. Name Function
1 Digital IO 51 Digital input pins / 34 Digital input pull-up pins / 51 Digital output pins / 14 Open-drain output pins
2 Serial(UART) 1 Serial(UART) channels(※1)
3 Wire(I2C) 2 Wire(I2C) channels(※2)
4 SPI 1 SPI channel(※2)
5 CAN FD 2 CAN FD channels
6 LED 2 on Board LED (pin 15 and pin 16)
7 User Switch 1 on Board User Switch (pin 26)
  • (※1) Serial(RxD0, TxD0) connects to a USB Type-C connector via a USB-serial converter.
  • (※2) Wire1 cannot be used simultaneously with the SPI channel.

2. Functions

2-1. Digital IO

  • The FPB-RL78/F25 has 51 Digital input pins and 34 Digital input_pullup pins and 51 Digital output pins.
  • When using digital IO, pinMode() must first be called to set the specified pin to operate as an input or output.

    1. Using pin 2 as an input.
   pinMode(2,INPUT);
   val = digitalRead(2);
    1. Using pin 3 as an input_pullup.
   pinMode(3,INPUT_PULLUP);
   val = digitalRead(3);
    1. Using pin 4 as an output.
   pinMode(4,OUTPUT);
   digitailWrite(4,HIGH);
  • The pins corresponding to digital I/O are as follows.
Digital input pin Digital input_pullup pin Digital output pin Open-drain output pins memo
2-52 2-23, 40-48, 50-52 2-52 4-13, 20-23 -

2-2. Serial(UART)

  • The FPB-RL78/F25 has 1 serial (UART) channel.
  • The default transmit buffer size when using each channel is 256 bytes.
  • The default receive buffer size when using each channel is 256 bytes.
  • The pin assignments of the channels are as follows.
Channel Transmit pin Receive pin memo
Serial 1 0 -

2-3. Wire(I2C)

  • The FPB-RL78/F25 has 2 wire (I2C) channels.
  • The pin assignments of the channels are as follows.
Channel Data pin Clock pin memo
Wire 22(SDA) 23(SCL) -
Wire1 12 13 SPI cannot be used simultaneously with the Wire1 channel.

2-4. SPI

  • The FPB-RL78/F25 has 1 SPI channel.
  • The configurable clock frequency range is 156.25 kHz to 10 MHz.
  • The pin assignment of the channel is as follows.
Channel Chip Select pin Data out pin Data in pin Clock pin memo
SPI 10 11 12 13 Wire1 cannot be used simultaneously with the SPI channel.

2-5. CAN FD

  • The FPB-RL78/F25 has 2 CAN FD channels.
  • The pin assignment of the channel is as follows.
Channel Data input pin Data output pin memo
CAN Ch0 21 20 Connected to the on-board CAN transceiver.
CAN Ch1 5 4 Not connected to a CAN transceiver.

2-6. LED

  • The FPB-RL78/F25 has two LEDs mounted on it.
  • The pins connected to the LEDs are as follows.
Name pin memo
LED1 50 -
LED2 51 -

2-7. User Switch

  • The FPB-RL78/F25 has one user switch.
  • The pin connected to the user switch is as follows.
Name pin memo
SW1 49 -

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