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Product attributes Property Value
Manufacturer Renesas Electronics Corporation
Product Series R8C/3x/34E
Packaging Tray | Tray
Core Processor R8C
Core Size 16-Bit
Speed 20MHz
Connectivity CANbus, I2C, LINbus, SIO, SSU, UART/USART
Peripherals POR, PWM, Voltage Detect, WDT
Number of I/O 43
Program Memory Size 48KB (48K x 8)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 4K x 8
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V
Data Converters A/D 12x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package 48-LQFP (7x7)
Package / Case 48-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The R5F21347EJFP#U0 is a 16-bit MCU from Renesas with an R8C core at 20MHz. It features 48KB flash and 4KB RAM, operating from 2.7V to 5.5V. The 48-LQFP package and robust peripherals make it suitable for industrial and consumer applications.

  • Wide voltage range: 2.7V to 5.5V simplifies power supply design.
  • Proven reliability: POR and WDT enhance system robustness.
  • Adequate memory: 48KB flash for moderate-complexity firmware.
  • Standard package: 48-LQFP is easy to solder and widely available.

Home Appliances

5.5V operation simplifies interface with legacy sensors and actuators.

Industrial Timers

WDT and POR ensure reliable operation in noisy environments.

Automotive Body Electronics

Wide voltage range handles battery fluctuations.

Power Tools

PWM outputs control motor speed with simple firmware.

White Goods

Cost-effective 16-bit solution for washing machines and refrigerators.

Lighting Control

48-LQFP provides enough I/O for multi-channel dimming.

Q: What is the supply voltage?
A: 2.7V to 5.5V.
Q: What core does it use?
A: R8C core at 20MHz.
Q: How much flash memory?
A: 48KB.
Q: What package is this?
A: 48-LQFP.
Base Product Number : R5F21347EJFP
16-bit MCU 20MHz 48KB flash 5V appliance industrial LQFP-48 R8C Renesas
Q: What is the supply voltage?
A: 2.7V to 5.5V.
Q: What core does it use?
A: R8C core at 20MHz.
Q: How much flash memory?
A: 48KB.
Q: What package is this?
A: 48-LQFP.