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Renesas introduces low-power RL78/G15 MCU

Renesas Electronics has introduced a new general-purpose microcontroller (MCU) in the low-power RL78 Family, with small package sizes that target 8-bit MCU applications.

The RL78/G15 is intended to be versatile and packs many peripheral functions and 4-8KB of code flash memory in package sizes ranging from 8 to 20 pins, with the smallest 8-pin device measuring only 3 x 3 mm.

These features are designed to keep system size small and reduce the cost of end systems, such as industrial, consumer, sensor control, lighting, and inverter applications. In addition, the maximum operating ambient temperature of 125°C facilitates optimal thermal design, covering a wide temperature range and allowing the MCU to be used near heat-generating components such as inverter motors.

Key Features of the RL78/G15

  • RL78 16-bit CPU core operating at 16MHz
  • Wide operating ambient temperature range of -40°C to 125°C
  • Available in 8-pin to 20-pin packages, with the smallest 3 mm x 3mm WDFN package
  • All pins can be used for general-purpose I/O, except VDD and VSS power supply pins
  • Up to 8 KB of code flash memory, 1 KB of data flash, and 1 KB of SRAM
  • Supports operating voltages from 2.4V to 5.5V
  • Multiple serial interfaces supported: CSI, UART, Simple I2C, and multi-master I2C
  • High-precision oscillator (±1.0%)
  • Built-in comparator

Similar to other RL78 devices, engineers designing with the new RL78/G15 can use the GUI-based Smart Configurator to easily generate driver code for peripheral functions.

Renesas also offers the Fast-Prototyping Board (FPB) for evaluation, which comes with Arduino Uno and Pmod Type 6A interfaces with access to all pins. In addition, debugging and programming are possible using only a USB cable.

Using an Arduino library that can run on the FPB, developers can gain access to development resources of the RL78 as well as the vast resources offered through the Arduino ecosystem, so that they can quickly turn their ideas into a working solution.