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R8C/33T

Not Recommended for New Designs

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

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Overview

The R8C/33T Group is supported only for customers who have already adopted these products. The RX130 Group is recommended for new designs.

The R8C/33T Group of single-chip MCUs incorporates 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/33T Group has data flash (1KB × 4 blocks) with the background operation (BGO) function.

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Resources

Support Communities

  1. R8C/33T SCU and SDMA/DTC questions

    I'm working on a touch project using the R8C/33T, but am having problems which I think relate to the automatic transfer of touch readings from the SCU to RAM.  This can happen via two mechanisms, DTC or SDMA, but the Hardware Manual is very sketchy about any ...

    Aug 5, 2015
  2. How to set fixed address for RAM variable?

    I'm using HEW Version 4.09.01.007, with M16C Standard Toolchain v5.45.01. I'm writing a touch-sensing application using the R8C/33T MCU.  Data from the SCU can be transferred to RAM by the DTC, but this requires the DTC's destination address to ...

    Aug 8, 2015
  3. Vdet1 not working as expected

    I have an R8C/33T application that involves occasional writing (at user request, to change settings) to data flash ROM (using the Renesas Virtual EEPROM code).  Because flash operations are only guaranteed down to a supply voltage of 2V7, I want to block flash writing operations when the battery ...

    Feb 15, 2016
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FAQs

  1. Is there a device which has external address space in the R8C Family?

    The R8C Family is a single-chip microcontroller. There is no device which has external address space.

    Oct 10, 2006
  2. Is there a list of the SFRs for the R8C Family applicable to Technical Update No. TN-M16C-55-0006?

    Affected registers include: UART0 bit rate register U0BRG UART0 transmit buffer register U0TB UART1 bit rate register U1BRG UART1 transmit buffer register U1TB For details, please refer to the Hardware Manual.
 If "When read, the value is undefined" or "When read, the content is undefined" is included in the register ...

    Dec 26, 2017
  3. What is the differences between the R8C Family and the M16C/60 Series

    The R8C Family doesn't support JMPS and JSRS instructions. These instructions branch to the program set from F0000h to FFFFFh block number, but the R8C Family has no ROM in this area, so you can't use these.

    Mar 7, 2012
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