Renesas R5F10RG8GFB#30

Overview

R5F10RG8GFB#30 from Renesas is an 8 KB flash, 1.5 KB RAM, 48-pin LFQFP industrial-grade RL78/L12 microcontroller with integrated LCD controller/driver (35 seg × 8 com), 10-bit ADC (10 channels), RTC, and ultra-low-power operation (0.64 µA in Halt mode with RTC + LVD). It targets battery-powered LCD display systems such as smart meters and portable medical devices.

For engineers reviewing the R5F10RG8GFB#30 datasheet, R5F10RG8GFB#30 pinout, R5F10RG8GFB#30 application, or R5F10RG8GFB#30 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm pitch package, industrial temperature range (−40°C to +105°C), on-chip LCD drive capability, and verified 24 MHz high-speed on-chip oscillator accuracy (±1% over voltage and temperature).

Technical Context

The R5F10RG8GFB#30 implements the 16-bit RL78 CPU core with Harvard architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz. Its instruction set supports single-cycle 16×16 multiply and MAC operations, enabling efficient signal processing for sensor-based LCD applications.

It integrates a dual-clock system: a 24 MHz ±1% high-speed on-chip oscillator for main operation and a 32.768 kHz crystal-supported subsystem clock for RTC. The LCD controller supports capacitor split, internal voltage boost, and resistance division methods with 16-step contrast control and blinking function.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), industrial-grade (−40°C to +105°C), lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RG8GFB#30, the R5F10RGA GFB#30 offers double flash capacity in identical packaging for seamless migration, while the RL78/G13 variant trades LCD integration for greater general-purpose resources - making the R5F10RG8GFB#30 optimal for cost-sensitive, LCD-centric industrial designs.

Availability

R5F10RG8GFB#30 is available at Aetrix Electronics and suitable for smart energy metering, portable medical displays, and industrial HMI applications requiring stable component supply, long-term lifecycle support, and industrial temperature compliance.

Supply support for R5F10RG8GFB#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line is designed specifically for ultra-low-power LCD-based applications - integrating high-efficiency CPU, on-chip LCD driver, and robust safety features for metering, healthcare, and home appliance control.

FAQ

What is the maximum operating frequency and performance of the R5F10RG8GFB#30?

The R5F10RG8GFB#30 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS. Its 16-bit RL78 core executes 86% of instructions in 1–2 clock cycles, and supports single-cycle 16×16 multiply and MAC operations - making it suitable for real-time sensor processing in LCD-based systems. The R5F10RG8GFB#30 maintains this performance across its full industrial temperature range (−40°C to +105°C).

Does the R5F10RG8GFB#30 support external crystals, and what clock options are available?

Yes, the R5F10RG8GFB#30 supports both external crystals and internal oscillators. It accepts main system clocks via X1/X2 (up to 20 MHz) and subsystem clocks via XT1/XT2 (32.768 kHz for RTC). Its 24 MHz ±1% high-speed on-chip oscillator eliminates the need for an external crystal in many applications, while the low-speed on-chip oscillator (15 kHz) enables ultra-low-power modes. All clock sources are configurable via system registers in the R5F10RG8GFB#30.

What LCD configurations does the R5F10RG8GFB#30 support, and how many segments/commmons can it drive?

The R5F10RG8GFB#30 supports three LCD bias methods: capacitor split, internal voltage boost, and external resistance division. It drives up to 35 segments and 8 commons (35×8), or alternatively 39 segments and 4 commons (39×4), with programmable contrast (16 steps) and blinking control. These capabilities are implemented entirely on-die - no external driver IC or charge pump is required. This configuration is fully supported in the R5F10RG8GFB#30's hardware and firmware libraries.

What safety certifications or functional safety features are built into the R5F10RG8GFB#30?

The R5F10RG8GFB#30 includes hardware-level safety features aligned with IEC/UL 60730 requirements: flash memory CRC calculation, RAM parity error detection, RAM/SFR write protection, illegal memory access detection, clock frequency monitoring, and ADC self-test. These features enable certified Class B compliance for household and industrial appliances. All safety mechanisms are active by default and configurable in the R5F10RG8GFB#30's system control registers.

Is the R5F10RG8GFB#30 pin-compatible with other RL78/L12 variants, and what package does it use?

Yes, the R5F10RG8GFB#30 uses the 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch) package and shares identical pinout with all other R5F10RGx family members - including R5F10RGA GFB#30 and R5F10RGC GFB#30. This enables drop-in replacement for flash size upgrades without PCB redesign. The "G" suffix denotes industrial temperature grade (−40°C to +105°C), and "FB" explicitly identifies the LFQFP-0.5 mm pitch package used by the R5F10RG8GFB#30.