Renesas Electronics RL78/L23 Low Power Microcontrollers

Renesas Electronics RL78/L23 Low Power Microcontrollers offer dual-bank flash, segment LCD, and capacitive touch function. The dual-bank flash facilitates FOTA (Firmware update Over the Air) enablement, while a built-in segment LCD and capacitive touch function streamline system design, reduce BOM cost, and lower footprint size.

The superior low-power capability of the Renesas RL78/L23 MCUs also fits metering applications, which need very low power consumption to maintain long battery life.

Features

  • RL78-S3 CPU core up to 32MHz
  • Flash of 512KB max (Dual Bank Memory)/SRAM 32KB max
  • Variety of packages (up to 100-pin)
  • LCD controller
  • Capacitive touch
  • Induction heating control timer (timer KB) 3-ch
  • Sub-clock operation timer (RTC, 32-bit interval timer, 16-bit interval timer, timer RJ)
  • Snooze Mode Sequencer (SMS) achieves low power consumption
  • Logic and Event Link Controller (ELCL), upgradeable extended functions

Applications

  • LCD controller
  • Smart home appliances
  • Induction heating control, induction heating cooker, induction heating rice cooker, induction heating printer
  • Flow meter (gas meter/water meter)
  • IoT devices
  • Healthcare

Typical Application

Application Circuit Diagram - Renesas Electronics RL78/L23 Low Power Microcontrollers

Block Diagram

Block Diagram - Renesas Electronics RL78/L23 Low Power Microcontrollers
Publicado: 2025-08-21 | Actualizado: 2025-10-06