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R8C/2J

Obsolete

16-bit Microcontrollers with R8C CPU Core (Non Promotion)

Overview

The R8C/2J Group is supported only for customers who have already adopted these products. The RL78/G11 Group is recommended for new designs.

The R8C/2H Group and R8C/2J Group of single-chip MCUs incorporate the R8C/Tiny Series CPU core, employing sophisticated instructions for a high level of efficiency. With 1Mb of address space, and it is capable of executing instructions at high speed. In addition, the CPU core boasts a multiplier for high-speed operation processing.

Power consumption is low, and the supported operating modes allow additional power control. These MCUs also use an anti-noise configuration to reduce emissions of electromagnetic noise and are designed to withstand EMI. Integration of many peripheral functions, including multifunction timer and serial interface, reduces the number of system components.

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Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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Resources

Support Communities

  1. Help wanted understanding programming / emulator connection needs

    Hi, I'm Neil of Tag-Connect, makers of JTAG and In-Circut Plug-of-Nails(tm) Cables which plug directly to the target PCB and eliminate the need for a programming header or maiting connector on each and every PCB saving both cost and board space. I'm wanting ...

    Jul 24, 2011

FAQs

  1. (R8C) Are there any hardware precautions for accurate A/D conversion?

    In order to perform A/D conversion, it is necessary to fully charge the internal capacitor, but if the impedance of the A/D conversion target is high, the discharge and charge will take time and the conversion value will not be accurate. For correct A/D ...

    Jun 19, 2006
  2. Please tell me how to set the option function register in detail.

    There are three methods for setting the option function select register using the C complier package M3T-NC30WA: Using the load module converter (lmc30 -R8C) -OFSREGX (or -PROTECTX) option Using assembler directive command .OFSREG (or .PROTECT) By assembly programming The load module converter option and directive command depend on the ...

    Mar 13, 2009
  3. What will happen if the MCU starts operating before oscillation is stabilized?

    Serial interfaces and timers may not be able to operate correctly. If the CPU clock is switched from "division by 8" to "no divisions" before oscillation is stabilized, the program will not perform properly because the CPU cannot fetch the program codes correctly. Timers, A/D converter and serial ...

    Dec 26, 2017
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