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Renesas Electronics RA0E3 General-Purpose Microcontrollers

Renesas Electronics RA0E3 General Purpose Microcontrollers are part of the entry-level, low-end RA0 series. The RA0E3 integrates an Arm® Cortex®-M23 core with low power and peripherals optimized for BOM cost reduction and a simple design. The RA0E3 MCUs support 16KB of code flash, 2KB of SRAM, a wide 1.6V to 5.5V operating voltage range, and a wide -40°C to +125°C operating temperature range.

The Renesas Electronics RA0E3 General Purpose Microcontrollers are ideal for applications requiring a low pin count. The RA0E3 MCUs are pin-compatible with RA0E1 (64kB ROM) and RA0E2 (64kB ROM) MCUs, providing users with design scalability across the RA0 series.

Features

  • Low power process with 2.6mA active current and 0.2uA Softwire standby current
  • 1.6V to 5.5V operating voltage
  • Internal High-speed OCO of 1% precision with -40°C to +125°C supported
  • -40°C to +125°C, TA operating temperature range

Applications

  • Consumer electronics
    • Audio operation terminals
    • Wireless microphone
    • Smart earbuds case charger
  • Building automation
    • Home doorbell/camera
    • Water heater
  • Home appliance
    • Lighting
    • Beauty equipment
    • Electric kettle
    • Electric toothbrushes
  • Industrial automation
    • Sensors/peripheral boards

Block Diagram

Block Diagram - Renesas Electronics RA0E3 General-Purpose Microcontrollers

Typical Application

Application Circuit Diagram - Renesas Electronics RA0E3 General-Purpose Microcontrollers
Publicado: 2026-02-27 | Actualizado: 2026-03-02