Renesas FPB-R9A02G021 Fast Prototyping Board: Quick Start Guide

1. Introduction

The Renesas FPB-R9A02G021 Fast Prototyping Board provides an entry point for evaluation, prototyping, and development with the R9A02G021 MCU. It incorporates an emulator circuit, allowing users to design their own applications without additional tools. The board features through-holes for pin headers, granting access to all MCU signal pins for easy prototyping with a breadboard.

Getting started is Easy!

Power up the FPB-R9A02G021 board through the Debug USB port (J17: Type-C) using a USB cable connected to a 5V power source, such as a PC USB port.
The green power LED3 will light up.
The pre-programmed 'blinky example project' will begin executing, blinking the green user LEDs LED1 and LED2.

2. Package Contents

FPB-R9A02G021 v1 Board (RTK9FPG021S00001BJ)
Printed Quick Start Guide
Printed information for China RoHS

3. Board Specifications

Item	Specification
Evaluation MCU	Part No: R9A02G0214CNE; package: 48-pin HWQFN On-chip memory: 128-KB ROM, 16-KB RAM, 4-KB data flash memory
Board size	Size: 55 mm x 95 mm
Power-supply voltage	VCC: 3.3 V. MCU operation voltage range 1.6 V to 5.5 V.
Power-supply circuit	USB connector: VBUS (5 V input); VBUS is converted to 3.3 V by linear regulator.
Push switch	2-pin external power-supply header*1 Reset switch x 1; user switch x 1
LED	Power indicator: green x 1, user: green x 2, Debug LED: yellow x 1
USB connector	Connector: USB Type-C
Pmod™ connector	Connector: Angle type, 12 pins x 2
Arduino® connector	Connector: 6 pins x 1, 8 pins x 2, 10 pins x 1 The interface is compatible with Arduino® UNO R3.
Grove® connector *1	Connector: Angle type, 4 pins x 1
MCU header*1	Header: 24 pins x 2
*1 This part is not mounted

4. Board Layout

The board layout is illustrated, showing the placement of key components and connectors. The central component is the R9A02G021 MCU. Surrounding it are various connectors, including the USB Debug/Power Connector (USB Type-C), External Debug Connector, Arduino Uno Connectors (Digital and Power/Analog), Pmod 1 and Pmod 2 connectors, and a Grove connector (not mounted). Also visible are a +3.3 V Linear Regulator, Power LED, Debug LED, Reset Switch, User Switch, MCU Boot Mode jumpers, and breakout pin headers (J1 and J2). An IR Receiver Module and reverse current protection diodes are also indicated.

5. Arduino Interface

The Arduino interface provides compatibility with the Arduino UNO R3 standard. It offers access to MCU pins for various functions:

Power Pins: 5V, 3V3, VIN, GND.
Digital Pins: D0 through D15, with associated MCU ports (e.g., P101, P011).
Analog Pins: A0 through A5, mapped to MCU analog input pins (e.g., ANI2, ANI3).
Serial Communication: SPI (Serial Peripheral Interface), I2C (Inter-Integrated Circuit), UART (Universal Asynchronous Receiver/Transmitter).
Other Functions: PWM, Interrupts (IRQ).

Notes indicate that certain connections or functionalities may require adjustments to solder joints on the board.

6. Pmod Interface

The FPB-R9A02G021 Fast Prototyping Board is equipped with Pmod connectors supporting Type-2A, Type-3A, and Type-6A interfaces. Pmod 1 is configured for Type-2A, Type-3A, and Type-6A, while Pmod 2 supports Type-3A and Type-6A.

Pmod 1 Connector:

Type-2A: SPI (Serial Peripheral Interface) pins.
Type-3A: UART (Universal Asynchronous Receiver/Transmitter) pins.
Type-6A: Supports I2C (Inter-Integrated Circuit), SPI, UART, and other functions. A note specifies that for Type 6A I2C functionality, solder joints E36 and E37 must be created, while solder joints E34 and E35 must be cut, following Digilent's Pmod I2C interface recommendations.

Pmod 2 Connector:

Type-3A: UART (TX, RX) pins.
Type-6A: Supports I2C (SDA, SCL), SPI, UART, and other functions. A note specifies that for Type 6A I2C functionality, solder joints E41 and E42 must be created, while solder joints E39 and E40 must be cut, following Digilent's Pmod I2C interface recommendations.

The VCC supply for Pmod pins 6 and 12 can be selected as either 3.3 V (default) or 5 V.

7. Grove Interface

The Grove connector is not mounted on this board.

Grove Interface Pinout (if mounted):

Power Supply: VCC (can be 3.3 V or 5 V).
Ground: GND.
Port: SDA/AN, SCL/AN.
Serial Comms Int. / Analog: Mapped to MCU pins P010 and P011.

A note indicates that to enable analog functionality, specific solder joints (E18, E21) must be created, and others (E19, E20) cut.

8. WEB and Support

For comprehensive details regarding the FPB-R9A02G021 board, consult the FPB-R9A02G021 User's Manual, available at: renesas.com/risc-v/fpb-r9a02g021.

Renesas offers sample projects designed for the R9A02G021 MCU, which serve as valuable resources for application development. To facilitate development, users will need to install the e2 studio integrated development environment, the LLVM compiler package for RISC-V, and Renesas Flash Programmer on their host PC. These essential tools can be downloaded from: renesas.com/risc-v/fpb-r9a02g021.

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