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The Renesas R8C is a 16-bit
microcontroller A microcontroller (MC, uC, or μC) or microcontroller unit (MCU) is a small computer on a single integrated circuit. A microcontroller contains one or more CPUs (processor cores) along with memory and programmable input/output peripherals. Pro ...
that was developed as a smaller and cheaper version of the Renesas M16C. It retains the M16C's 16-bit CISC architecture and instruction set, but trades size for speed by cutting the internal data bus from 16 bits to 8 bits. It is available in a number of different versions with varying amounts of
flash memory Flash memory is an Integrated circuit, electronic Non-volatile memory, non-volatile computer memory storage medium that can be electrically erased and reprogrammed. The two main types of flash memory, NOR flash and NAND flash, are named for t ...
and SRAM.


Members of the R8C family

All R8C have an internal ring oscillator and can be used without an external resonator. Common interfaces are
UART A universal asynchronous receiver-transmitter (UART ) is a peripheral device for asynchronous serial communication in which the data format and transmission speeds are configurable. It sends data bits one by one, from the least significant to ...
and some devices have CAN interfaces. Some devices have an internal data flash which is meant as a replacement for a serial
EEPROM EEPROM or E2PROM (electrically erasable programmable read-only memory) is a type of non-volatile memory. It is used in computers, usually integrated in microcontrollers such as smart cards and remote keyless systems, or as a separate chip d ...
, although it handles less write cycles as a real serial EEPROM. R8C devices have OCD (On Chip Debugging, see
in-circuit emulator In-circuit emulation (ICE) is the use of a hardware device or in-circuit emulator used to debug the software of an embedded system. It operates by using a processor with the additional ability to support debugging operations, as well as to carr ...
). When debugging with the Renesas E8 debugger or E8a debugger, UART 1 cannot be used. The debug interface uses only four wires: Vcc, GND, Reset and Mode.


R8C/11

*8-16k flash memory


R8C/13

*8-16k flash memory Key features: #4 port I/O #Four Timers (X,Y,Z,C) each other 8 bit, except C timer 16 Bit.plus watch timer 15 bit #10 bit*12 channel A/D converter #8 bit*1 channel UART or clock synchronous serial I/O, plus 8 bit 1 canal UART #System Clock Generator Xin-X out (High-Low Speed On Chip Oscillator) #CPU Core And more Memory


R8C/18

*4-16k flash memory


R8C/19

*4-16k flash memory


R8C/1A

*4-16k flash memory


R8C/1B

*4-16k flash memory


R8C/20

*32-128k flash memory


R8C/21

*32-48k flash memory


R8C/22

*32-48k flash memory *CAN interface


R8C/23

*32-48k flash memory *CAN interface


R8C/24

*16-32kbyte flash memory


R8C/25

*16-32k flash memory


R8C/26

*8-32k flash memory


R8C/27

*8-32k flash memory


R8C/28

*8-16k flash memory


R8C/29

*8-16k flash memory


R8C/2A

*48-96k flash memory


R8C/2B

*48-96k flash memory


R8C/2C

*48-96k flash memory


R8C/2D

*48-96k flash memory


R8C/33


See also

* M16C *
M32C M3, M-3 or M03 may refer to: Computing and electronics * Apple M3, a central processing unit in the Apple M series * Intel m3, a brand of microprocessors * M.3 (aka NF1/NGSFF), a specification for internally mounted expansion cards * Leica ...


External links


Renesas R8C product page
* http://www.RenesasInteractive.com - Online training for Renesas products * http://www.RenesasRulz.com - A community support forum. * http://www.kpitgnutools.com Official free M16C GNU Toolchain with Free Support
Online Tutorial (Clubelek)
{{Microcontrollers Renesas microcontrollers