Renesas R5F10RB8GFP#30

Overview

R5F10RB8GFP#30 from Renesas is an 8 KB flash, 1 KB RAM, 32-pin LQFP (7×7 mm, 0.8 mm pitch) 16-bit RL78/L12 microcontroller with integrated LCD controller/driver, 10-bit ADC (10 channels), RTC, and ultra-low-power operation (0.64 µA in Halt mode with RTC + LVD). It delivers 31 DMIPS at 24 MHz and targets battery-powered LCD display applications such as smart meters, thermostats, and portable medical devices.

For engineers reviewing the R5F10RB8GFP#30 datasheet, R5F10RB8GFP#30 pinout, R5F10RB8GFP#30 application, or R5F10RB8GFP#30 equivalent, key selection criteria include its 32-pin LQFP package, industrial-grade −40°C to +105°C operating range (G suffix), on-chip LCD drive capability (up to 35 seg × 4 com), 1.6 V to 5.5 V supply voltage, and integrated data flash (2 KB) with background operation.

Technical Context

The R5F10RB8GFP#30 implements the RL78 CPU core with Harvard architecture, 3-stage pipeline, and CISC instruction set enabling 86% of instructions in 1–2 clock cycles. Its low-power design integrates a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature), low-speed oscillator (15 kHz), and multiple power modes including Stop (0.23 µA), Halt (0.64 µA), and active operation at 62.5 µA/MHz.

It features a dedicated LCD controller supporting capacitor split, internal voltage boost, and resistance division methods; supports waveform types A/B, 16-step contrast adjustment, and blinking. The peripheral set includes UART, two CSI (SPI-compatible) interfaces, I²C, 8-channel 16-bit timer array, DMA (2 channels), and safety features compliant with IEC/UL 60730 (CRC, RAM parity, SFR write protection).

Key Specifications

Pinout & Package

Package: 32-pin plastic LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, surface-mountable.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F10RB8GFP#30, R5F10RBCGFP#30 offers 4× more flash for feature-rich firmware but consumes identical power; R5F10RF8GFP#30 trades compact 32-pin footprint for expanded I/O and analog resources - both retain identical low-power architecture and LCD capabilities.

Availability

R5F10RB8GFP#30 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical monitors requiring stable component supply across long production lifecycles.

Supply support for R5F10RB8GFP#30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line is engineered for ultra-low-power LCD-based applications, integrating display control, sensing, and connectivity in a single chip to minimize BOM cost and board space in battery-operated devices.

FAQ

What is the maximum operating frequency and performance of the R5F10RB8GFP#30?

The R5F10RB8GFP#30 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS of processing performance. Its RL78 CPU core executes 86% of instructions in just 1–2 clock cycles due to its 3-stage pipeline and optimized CISC architecture, making it suitable for real-time control tasks in LCD-based systems while maintaining ultra-low power consumption.

Does the R5F10RB8GFP#30 support external crystal oscillators?

Yes, the R5F10RB8GFP#30 supports external crystal oscillators on pins X1 (P121) and X2 (P122) for the main system clock, and XT1 (P123) and XT2 (P124) for the subsystem clock (32.768 kHz). These enable precise timing for RTC operation and high-accuracy communication interfaces, complementing the ±1% internal 24 MHz oscillator used for general system operation.

How does the R5F10RB8GFP#30 manage LCD bias voltage generation?

The R5F10RB8GFP#30 provides four dedicated VL pins (VL1–VL4) and supports three LCD drive methods: capacitor split (0.12 µA LCD current), internal voltage boost (0.63 µA at VDD = 3.0 V), and external resistance division. It also includes CAPH/CAPL pins for external capacitor connection in capacitor-split mode, enabling efficient bias generation without external ICs.

What safety certifications does the R5F10RB8GFP#30 support for industrial applications?

The R5F10RB8GFP#30 includes hardware-level safety features aligned with IEC/UL 60730 Class B requirements, including flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, and clock frequency monitoring. These features reduce software certification burden for household appliances, HVAC controls, and industrial equipment.

Can the R5F10RB8GFP#30 operate from a single 1.8 V supply?

Yes, the R5F10RB8GFP#30 operates across a 1.6 V to 5.5 V supply range, fully functional at 1.8 V. At this voltage, it supports all core functions including 24 MHz high-speed oscillator operation (±1% accuracy), 10-bit ADC conversions, LCD driving (capacitor-split method), and RTC operation - enabling compatibility with emerging low-voltage battery chemistries and energy-harvesting systems.