Renesas R5F100GEAFB#10 | Mainstream MCU for Smart Toilets, Powerful Compact Chip

To all partners engaged in smart toilet and bathroom control solutions:The Renesas RL78/G13 R5F100GEAFB#10 is a widely recognized industrial-grade MCU featuring high reliability and cost performance, acting as the control core for smart toilets.

Key Specifications

• Core: 16-bit RL78, 32 MHz clock frequency, 41 DMIPS computing performance

• Memory: 64 KB Flash, sufficient for bathroom control program storage

• Power Consumption: Ultra-low power of 66 μA/MHz; standby current as low as 230 nA for long-term energy saving

• Package: 48-LFQFP (7×7 mm), compact size ideal for smart toilet main control boards

• Wide Voltage Range: 1.6V – 5.5V, strong voltage fluctuation resistance for complex power supply conditions in bathroom environments

• Compliance: Compliant with IEC60730 household appliance safety standard; excellent protection against over-temperature, over-voltage and electromagnetic interference

Core Functions for Smart Toilets

As the main control MCU, it stably manages all key operations without downtime:

• Constant temperature control for seat ring: Precise temperature control within ±1℃, keeping the seat warm in all seasons

• Intelligent water temperature adjustment: Dual sensors for inlet and outlet water ensure stable and comfortable water temperature for rear and feminine cleansing

• Warm air drying control: PWM-based precise regulation of temperature and wind speed for gentle drying

• Accurate nozzle control: Manages nozzle extension, retraction and positioning with adjustable water pressure for thorough cleaning

• Water level & overflow monitoring: Real-time tank water level detection to prevent dry burning and water leakage

• Keypad & display interaction: Responds to panel keys and drives indicator lights & simple displays

• Safety protection: Detects over-temperature, electric leakage and overload, and triggers automatic shutdown in case of faults

Why It Is Widely Adopted in the Smart Toilet Industry

✅ Industrial-grade stability: Operating temperature range from -40℃ to 85℃. Runs reliably for years in humid and temperature-variant bathroom environments.✅ High cost performance: Industrial-grade quality at cost-effective prices, friendly for mass production.✅ Low power consumption & long service life: Optimized for long standby operation; service life up to 10 years and above.✅ Abundant I/O resources: Integrated multi-channel ADC and PWM, easy to connect with sensors, motors and heating modules.

Application Scenarios

• Main control boards for smart toilets & toilet seat covers

• Control units for bathroom small appliances (smart bathtubs, foot baths)

• Temperature control and motor control modules for household appliances

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