Renesas R5F10RGCGFB#10

Overview

R5F10RGCGFB#10 from Renesas is a 48-pin LFQFP, 32 KB flash, 2 KB data flash, 1.5 KB RAM RL78/L12 microcontroller with integrated LCD controller/driver (up to 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, thermostats, and portable medical devices.

For engineers reviewing the R5F10RGCGFB#10 datasheet, R5F10RGCGFB#10 pinout, R5F10RGCGFB#10 application, or R5F10RGCGFB#10 equivalent, key selection criteria include its 48-pin LFQFP-0.5 mm pitch package, industrial-grade −40°C to +105°C operation, on-chip LCD drive capability with capacitor split/internal boost methods, and verified 24 MHz high-speed on-chip oscillator (±1% accuracy).

Technical Context

The R5F10RGCGFB#10 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 dedicated LCD controller supporting waveform types A/B, 16-step contrast adjustment, blinking control, and three drive methods (capacitor split, internal voltage boost, resistance division). The peripheral I/O redirection register (PIOR) enables flexible pin assignment for timers, serial interfaces, and key return inputs without hardware changes.

Key Specifications

Pinout & Package

Package: 48-pin LFQFP (7 mm × 7 mm, 0.5 mm pitch), industrial temperature 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 R5F10RGCGFB#10, the R5F10RGCAGB#10 reduces thermal margin and RAM for cost savings, while the R5F10RJCGFA#10 trades compact 48-pin packaging for expanded analog/timer resources in a larger 52-pin format - both require PCB redesign and cannot be drop-in replacements.

Availability

R5F10RGCGFB#10 is available at Aetrix Electronics and suitable for smart energy meters, industrial thermostats, and portable medical monitors requiring stable component supply, long-term lifecycle support, and industrial-temperature-grade reliability.

Supply support for R5F10RGCGFB#10 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 engineered for ultra-low-power LCD-based applications, integrating optimized peripherals like LCD drivers, RTC, and precision oscillators to minimize BOM and simplify design of battery-operated human-interface devices.

FAQ

What is the maximum operating frequency and core performance of the R5F10RGCGFB#10?

The R5F10RGCGFB#10 operates at up to 24 MHz using its high-speed on-chip oscillator and delivers 31 DMIPS. Its 16-bit RL78 CPU core executes 86% of instructions in 1–2 clock cycles, with single-cycle 16×16 multiply and MAC support - making it suitable for real-time sensor processing in LCD applications. The R5F10RGCGFB#10 achieves this performance across its full 1.6–5.5 V supply range.

Does the R5F10RGCGFB#10 support external crystals, and what are the clock options?

Yes, the R5F10RGCGFB#10 supports both main and subsystem crystal oscillators: P121/P122 accept 1–20 MHz crystals for the main system clock, while P123/P124 support a 32.768 kHz crystal for the RTC subsystem. It also allows external clock inputs on EXCLK and EXCLKS pins. The R5F10RGCGFB#10 can operate without crystals using its ±1% accurate 24 MHz on-chip oscillator, reducing component count.

How many LCD segments and commons does the R5F10RGCGFB#10 support, and what drive methods are available?

The R5F10RGCGFB#10 supports up to 35 segments × 8 commons or 39 segments × 4 commons via its integrated LCD controller/driver. It offers three configurable drive methods: capacitor split (0.12 µA), internal voltage boost (0.63 µA @ 3.0 V), and external resistance division - all selectable in firmware. The R5F10RGCGFB#10 provides dedicated VL1–VL4 outputs and CAPL/CAPH terminals for bias generation.

What low-power modes are available on the R5F10RGCGFB#10, and what is the lowest current consumption?

The R5F10RGCGFB#10 offers multiple low-power states: Stop mode (0.23 µA, RAM retained), Halt mode (0.64 µA with RTC + LVD active), and Snooze mode for partial peripheral operation. Its operating current is 62.5 µA/MHz. These modes - combined with the R5F10RGCGFB#10's 1.6 V minimum supply - enable decade-long battery life in always-on LCD applications like utility meters and thermostats.

Is the R5F10RGCGFB#10 pin-compatible with other RL78/L12 variants, and what package does it use?

The R5F10RGCGFB#10 uses a 48-pin LFQFP package (7 mm × 7 mm, 0.5 mm pitch) and is not pin-compatible with 32-, 44-, 52-, or 64-pin RL78/L12 variants due to differing pin counts and layouts. While functional features align across the family, mechanical compatibility is limited to other 48-pin LFQFP members (e.g., R5F10RGx series). The R5F10RGCGFB#10 requires its specific footprint and decoupling (REGC capacitor mandatory).