RL78G22 Fast Prototyping Board pin list

RL78/G22 Fast Prototyping Board

Description

• The RL78/G22 Fast Prototyping Board is provided with interface pins for Arduino Uno conversion.

1. pinlist

• A pin list of the RL78/G22 Fast Prototyping Board is shown below.

RL78/G22 port Number	Pin Name	Arduino Pin Number(Digital IO)	Arduino Uno I/F	MCU header	Pmod I/F	Grove I/F	Analog IO	PWM	Serial	Wire	SPI(※2)	Interrupt	Tone	PulseIn	ShiftIn/ShiftOut	Servo	Stepper	LED	User Switch
P01	0	0	〇	〇	-	-	-	-	RxD1	-	-	-	-	〇	〇	〇	〇	-	-
P00	1	1	〇	〇	-	-	-	-	TxD1	-	-	-	-	〇	〇	〇	〇	-	-
P140	~2	2	〇	〇	〇	-	-	-	-	-	-	0	-	〇	〇	〇	〇	-	-
P31	~3	3	〇	〇	〇	-	-	〇	-	-	-	1	〇	〇	〇	〇	〇	-	-
P120	4	4	〇	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P41	~5	5	〇	〇	〇	-	-	〇	-	-	-	-	〇	〇	〇	〇	〇	-	-
P10	~6	6	〇	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P146	7	7	〇	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P30	8	8	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P17	~9	9	〇	〇	〇	-	-	〇	-	-	-	-	〇	〇	〇	〇	〇	-	-
P16	~10	10	〇	〇	〇	-	-	〇	-	-	SS	2	〇	〇	〇	〇	〇	-	-
P13	~11	11	〇	〇	-	-	-	-	TxD2(※2)	-	MOSI	-	-	〇	〇	〇	〇	-	-
P14	12	12	〇	〇	-	-	-	-	RxD2(※2)	-	MISO	-	-	〇	〇	〇	〇	-	-
P15	13	13	〇	〇	〇	-	-	-	-	-	SCK	-	-	〇	〇	〇	〇	-	-
P62	-	14	-	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	LED1	-
P63	-	15	-	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	LED2	-
P75	-	16	-	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P74	-	17	-	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P73	-	18	-	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P72	-	19	-	〇	〇	-	-	-	TxDA0	-	-	-	-	〇	〇	〇	〇	-	-
P71	-	20	-	〇	〇	-	-	-	RxDA0	-	-	-	-	〇	〇	〇	〇	-	-
P70	-	21	-	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P50	-	22	-	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P51	-	23	-	〇	〇	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P12	-	24	-	〇	-	-	-	-	TxD0	-	-	-	-	〇	〇	〇	〇	-	-
P11	-	25	-	〇	-	-	-	-	RxD0	-	-	-	-	〇	〇	〇	〇	-	-
P22	-	26	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P21	-	27	-	〇	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P130(※3)	-	28	-	〇	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	-	-
P40	-	29	-	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P124	-	30	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P123	-	31	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P137(※4)	-	32	-	〇	-	-	-	-	-	-	-	3	-	〇	〇	-	-	-	〇
P122	-	33	-	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P121	-	34	-	〇	-	-	-	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P20	AREF	35	〇(※1)	〇	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P60	SCL	36	〇	〇	-	〇	-	-	-	SCL0	-	-	-	-	-	-	-	-	-
P61	SDA	37	〇	〇	-	〇	-	-	-	SDA0	-	-	-	-	-	-	-	-	-
P147	A0	38	〇	〇	-	-	A0	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P27	A1	39	〇	〇	-	-	A1	-	-	-	-	-	-	〇	〇	〇	〇	-	-
P26	A2	40	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P25	A3	41	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P24	A4	42	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
P23	A5	43	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
-	VDD(IOREF)	-	〇	〇	〇	〇	-	-	-	-	-	-	-	-	-	-	-	-	-
-	RESET	-	〇	〇	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
-	3V3	-	〇	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
-	5V	-	〇	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
-	GND	-	〇	〇	〇	〇	-	-	-	-	-	-	-	-	-	-	-	-	-
-	VIN	-	〇	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

• (※1) External reference voltage supply pin
• (※2) Serial2(RXD2,TXD2) cannot be used simultaneously with the SPI channel.
• (※3) Pin 28 (P130) is an output-only port, so the INPUT setting cannot be used.
• (※4) Pin 32 (P137) is an input-only port, so the OUTPUT setting cannot be used.

2. Functions

• The functions of the RL78/G22 Fast Prototyping Board are listed below.

No.	Name	Function
1	Digital IO	32 Digital Input/output pins
2	Analog IO	2 Analog Input pins
3	PWM	4 PWM Output pins
4	Serial(UART)	4 Serial(UART) channels(※1)
5	Wire(I2C)	1 Wire(I2C) channels
6	SPI	1 SPI channels
7	Interrupt	4 Interrupt pins
8	Tone	4 Tone Output pins
9	PulseIn	31 Pulse Input pins
10	ShiftIn/ShitOut	32(16pair) shiftIn/ShiftOut pins
11	Servo	31 Servo Output pins
12	Stepper	31 Stepper Output pins
13	LED	2 on Board LED (pin 14 and pin 15)
14	User Switch	1 on Board User Switch (pin 32)

• (※1) One serial channel (Serial) connects to a Micro-USB connector via a USB-serial converter.
• (※2) Serial2(RXD2,TXD2) cannot be used simultaneously with the SPI channel.
• Refer to the following link for reference on the various functions.
• Arduino Reference - Arduino Reference

2-1. Digital IO

• The RL78/G22 Fast Prototyping Board has 32 digital inputs and outputs.
• In order to use digital I/O, it is necessary to first configure pin direction settings using

• 1. Using pin3 as an input.

   pinMode(3,INPUT);
   val = digitalRead(3);

• 2. Using pin4 as an output.

   pinMode(4,OUTPUT);
   digitailWrite(4,HIGH);

• The pins corresponding to digital I/O are as follows.

  Digital pin	memo

| 0-7, 9-25, 28, 29, 32-34, 38, 39 | - |

2-2. Analog IO(Analog Input)

• The RL78/G22 Fast Prototyping Board has 2 analog inputs and outputs.
• Analog input signals are A/D converted and the resulting digital values are returned.
• To use analog input, use analogRead() to specify the analog pin name and read the data.

• Use A0 pin

val =analogRead(A0);

• The pins corresponding to analog input are as follows.

analog input pin	memo
A0	-
A1	-

2-3. PWM

• The RL78/G22 Fast Prototyping Board has 4 PWM output pins.
• To use PWM output, use analogWrite() to specify the pin name and duty, and generate PWM output.
• To change the PWM output pulse frequency, use anaglogWriteFrequency() to set the frequency, then use analogWrite() to generate PWM output.
• The pins corresponding to PWM output are as follows.

PWM output pin	memo
3, 5, 9, 10	-

2-4. Serial(UART)

• The RL78/G22 Fast Prototyping Board has 4 serial (UART) channels.
• A serial channel (Serial) is connected to a Micro-USB connector via a USB-serial converter.
• The Serial2 channel and SPI channel cannot be used simultaneously.
• 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	24	25	-
Serial1	1	0	-
Serial2	11	12	Serial2 cannot be used simultaneously with the SPI channel.
Serial3	19	20	Connectable to Pmod2 I/F.

2-5. Wire(I2C)

• The RL78/G22 Fast Prototyping Board has 1 wire (I2C) channel.
• The pin assignments of the channels are as follows.

Channel	Data pin	Clock pin	memo
Wire	37	36	-

2-6. SPI

• The RL78/G22 Fast Prototyping Board has one SPI channel.
• The SPI channel cannot be used simultaneously with the Serial2 channel.
• 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	Serial2 cannot be used simultaneously with the SPI channel.

2-7. Interrupt

• The RL78/G22 Fast Prototyping Board has 4 external interrupt pins.
• The correspondences between external interrupt numbers and pins are as follows.

Interrupt No.	Interrupt pin	memo
0	2	-
1	3	-
2	10	-
3	32	-

2-8. Tone

• The RL78/G22 Fast Prototyping Board has 4 tone output pins.
• The correspondences between tone outputs and pins are as follows.

Tone output pin	memo
3	-
5	-
9	-
10	-

2-9. PulseIn

• The RL78/G22 Fast Prototyping Board has 31 pulse input pins.
• The correspondences between pulse inputs and pins are as follows.

Pulse input pin	memo
0-7, 9-25, 29, 32-34, 38, 39	-

2-10. ShiftIn/ShiftOut

• The RL78/G22 Fast Prototyping Board has 32 shift input/output pins (16 pairs).
• The correspondences between shift inputs/outputs and pins are as follows.

Clock pin	Data pin	memo
0-7, 9-25, 28, 29, 33, 34, 38, 39	0-7, 9-25, 28, 29, 32-34, 38, 39	Pin 28 cannot be used as a Data pin when ShiftIn is used, Pin 32 cannot be used as a Data pin when ShiftOut is used.

2-11. Servo

• The RL78/G22 Fast Prototyping Board has 31 Servo output pins.
• The correspondences between Servo output pins are as follows.

Servo output pin	memo
0-7, 9-25, 28, 29, 33, 34, 38, 39	-

2-12. Stepper

• The RL78/G22 Fast Prototyping Board has 31 Stepper output pins.
• The correspondences between Stepper output pins are as follows.

Stepper output pin	memo
0-7, 9-25, 28, 29, 33, 34, 38, 39	-

2-13. LED

• The RL78/G22 Fast Prototyping Board has two LEDs mounted on it.
• The pins connected to the LEDs are as follows.

Name	pin	memo
LED1	14	-
LED2	15	-

2-14. User Switch

• The RL78/G22 Fast Prototyping Board has one user switch.
• The pin connected to the user switch is as follows.

Name	pin	memo
SW1	32	-