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Product attributes Property Value
Manufacturer Renesas Electronics Corporation
Product Series RL78/G14
Packaging | Tray
Core Processor RL78
Core Size 16-Bit
Speed 32MHz
Connectivity CSI, I2C, LINbus, UART/USART
Peripherals DMA, LVD, POR, PWM, WDT
Number of I/O 31
Program Memory Size 16KB (16K x 8)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 2.5K x 8
Voltage - Supply (Vcc/Vdd) 1.6V ~ 5.5V
Data Converters A/D 10x8/10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package 44-LQFP (10x10)
Package / Case 44-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Renesas R5F104FADFP is a compact RL78 microcontroller in a 44-pin LQFP. It operates at 32MHz with 16KB flash and 2.5KB SRAM. The supply voltage ranges from 1.6V to 5.5V. It includes DMA, LVD, POR, PWM, and WDT peripherals, making it a cost-effective solution for simple control applications.

  • Small 44-pin LQFP – saves board space for compact designs.
  • 16KB flash / 2.5KB RAM – sufficient for basic control tasks.
  • 32MHz RL78 core – fast for its size, enabling responsive control.
  • Wide voltage range (1.6V-5.5V) – simplifies power design.

Compact Sensor Interfaces

With 16KB flash and 2.5KB RAM, this MCU is perfect for simple sensor conditioning and digital output. The 44-pin package fits small PCBs.

Small Appliance Control

PWM and WDT enable reliable control of heating elements or small motors. The wide voltage range allows direct connection to 5V supplies.

Battery Management Systems

LVD monitors cell voltage, while the low-power RL78 core extends battery life. The 32MHz speed handles cell balancing algorithms.

LED Lighting Drivers

PWM outputs control LED brightness, and the small footprint is ideal for bulb or strip controllers. POR ensures clean startup.

Simple Relay Logic Controllers

With enough GPIOs for relay drivers and status LEDs, this MCU replaces discrete logic circuits. The WDT prevents stuck states.

Consumer Electronics Peripherals

In toys or small gadgets, the 16KB flash stores simple state machines. The 2.5KB RAM handles temporary data.

Q: What is the program memory size?
A: The R5F104FADFP has 16KB of flash memory.
Q: How much RAM does it have?
A: It includes 2.5KB of SRAM.
Q: What is the operating voltage range?
A: It operates from 1.6V to 5.5V.
Q: What is the maximum CPU speed?
A: The RL78 core runs at up to 32MHz.
Q: What package is this available in?
A: It comes in a 44-pin LQFP package.
Base Product Number : R5F104FADFP
16-bit MCU 16KB flash 2.5KB RAM 32MHz appliance DMA LED LQFP-44 LVD POR PWM Renesas RL78 sensor WDT
Q: What is the program memory size?
A: The R5F104FADFP has 16KB of flash memory.
Q: How much RAM does it have?
A: It includes 2.5KB of SRAM.
Q: What is the operating voltage range?
A: It operates from 1.6V to 5.5V.
Q: What is the maximum CPU speed?
A: The RL78 core runs at up to 32MHz.
Q: What package is this available in?
A: It comes in a 44-pin LQFP package.