Overview

GR-COTTON is a white and round board that has full-color LEDs to link between light and design. You can use a CR2032 battery and write a program via USB cable. Designers can check the operation using an LED and create a gadgets smoothly.

gr-cotton-sp

GR-COTTON Board Front

GR-COTTON Key Features

  • Embeds a Renesas RL78/G13 group 16-bit microcontroller
  • The socket for CR2032 is mounted on the reverse side
GR-COTTON Board Back

GR-COTTON Pin Map

GR-COTTON Pin Map

Detailed Specification

Microcontroller
RL78/G13 (R5F100GJAF B 48-pin QFP)
ROM/RAM
256KB/20KB
Data Flash
8KB
Main Clock
32MHz (internal)
Sub Clock
32.768kHz
Operating Voltage
3.3V*

* The operating voltage of MCU is from 1.8V to 5.5V

Resources

Schematic/Design

Sketch Reference

Creating & Writing Programs (Sketches)

There are several programming projects that can be done using the GR-COTTON board, including:

Project File for e2 studio

Project file for sketching in the Eclipse-based development environment e2 studio. For downloading and installing e2 studio, please refer to the e2 studio product page.

Note: This is a project exported in e2 studio Version 5.4. It cannot be imported successfully in Version 6.0. For later versions please check that the import is compatible.

Technical Support

Technical Information

Related Websites

GR-COTTON Board Distributor

Projects

Gadget Renesas provides boards that make it possible to prototype ideas quickly, a community where users can interact, and events to help users build their projects to make their ideas a reality. Below are some projects that utilized the GR-COTTON board.

文档和下载

文档标题 其他语言 类型 文档格式 文件大小 日期
Downloads
Cotton Sketch v204-e2v7 Project File 软件 ZIP 592 KB
其他
gr-cotton_schematic_20160114_001.CE3 Others PDF 91 KB
GR-COTTON Layout Others PDF 952 KB