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R8C/38A

Obsolete

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

Overview

The R8C/38A Group is supported only for customers who have already adopted these products. The RL78/G14 Group is recommended for new designs.

The R8C/38A Group of single-chip MCUs incorporate the R8C 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 are designed to maximize EMI/EMS performance. Integration of many peripheral functions, including multifunction timer and serial interface, reduces the number of system components. The R8C/38A Group have data flash (1KB × 4 blocks) with the background operation (BGO) function.

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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. When using the D/A converter, can I stabilize the output voltage by adding a resistor for pull-down?

    Since the D/A converter has an internal output resistor, if a pull-down resister is added, resistance from both the internal and pull-down resistors will divide the output level. Accordingly, D/A conversion precision will be worse than if there were no pull-down resistor. The ...

    Dec 26, 2017
  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
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