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R8C/1B

Obsolete

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

Overview

The R8C/1B Group is supported only for customers who have already adopted these products. The RL78/G12 Group is recommended for new designs.

These MCUs are fabricated using the high-performance silicon gate CMOS process, embedding the R8C/ Tiny Series CPU core, and is packaged in a 20-pin molded-plastic LSSOP, SDIP or a 28-pin plastic molded HWQFN. It implements sophisticated instructions for a high level of instruction efficiency. With 1Mb of address space, they are capable of executing instructions at high speed. Furthermore, the R8C/1B Group has on-chip data flash ROM (1KB × 2 blocks). The difference between the R8C/1A Group and R8C/1B Group is only the presence or absence of data flash ROM. Their peripheral functions are the same.

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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. R8C/1B :defining fixed data in data flash

    R8C/1B :defining fixed data in data flash

    Feb 27, 2007
  2. POR enabled/disabled

    Dear Renesas Team, How can I disable/enable the power-on reset function on R8C/1B?with:1) Special register?: I could not find a special register in the hardware datasheet (for example the bit LVD0ON like on the R8C/24 processor)2) MCU marking code? We ...

    Mar 18, 2020
  3. meaning of tend_sssr

    meaning of tend_sssr

    Feb 25, 2009
View All Results from Support Communities (14)

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. Do I need to rewrite the boot ROM area using MI6C Flash Starter?

    Rewriting of the boot ROM area is unnecessary. This is because M3A-0806 performs programming using the standard boot program which was programmed into the boot ROM area when it was shipped. (#104963)

    Mar 1, 2005
  3. 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
View All Results from FAQs (14)