Renesas R5F10RLCGFA#10

Overview

R5F10RLCGFA#10 from Renesas is a 64-pin LQFP-packaged 16-bit RL78/L12 microcontroller with 32 KB flash, 2 KB data flash, 1.5 KB RAM, integrated LCD controller/driver (up to 39 seg × 4 com), and ultra-low-power operation (0.64 µA in RTC+LVD halt mode). It targets battery-powered LCD display systems such as smart meters, healthcare monitors, and industrial HMI panels requiring long runtime and on-chip segment driving.

For engineers reviewing the R5F10RLCGFA#10 datasheet, R5F10RLCGFA#10 pinout, R5F10RLCGFA#10 application, or R5F10RLCGFA#10 equivalent, key selection criteria include its 32 KB code flash density, 64-pin LQFP-0.65 mm pitch package, 1.6–5.5 V operating range, 24 MHz max CPU frequency (31 DMIPS), and built-in LCD bias generation supporting capacitor-split and internal-boost methods.

Technical Context

The R5F10RLCGFA#10 implements the RL78 16-bit CISC core with 3-stage pipeline, delivering 31 DMIPS at 24 MHz and executing 86% of instructions in 1–2 clock cycles. Its low-power architecture supports multiple sleep modes including Stop (0.23 µA) and Halt (0.64 µA with RTC + LVD enabled), plus snooze mode for peripheral-triggered wake-up without full CPU restart.

It integrates a dedicated LCD controller supporting up to 39 segments and 4 commons via programmable waveform types A/B, 16-step contrast control, blinking, and three bias methods. Analog resources include a 10-bit ADC with 10 channels, internal 1.45 V reference, and on-chip temperature sensor - all operable down to 1.6 V.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 mm × 12 mm, 0.65 mm pitch), RoHS-compliant, industrial-grade (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RLCGFA#10, R5F10RLCAFA#10 offers identical integration and package at lower memory cost, while R5F10RJCGFA#10 trades pin count and LCD capacity for smaller footprint - both require firmware validation but share the same RL78/L12 instruction set and peripheral register map.

Availability

R5F10RLCGFA#10 is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial HMI panels, and home appliance control requiring stable component supply across extended product lifecycles.

Supply support for R5F10RLCGFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line delivers true low-power MCUs optimized for LCD-based applications, integrating high-efficiency CPU, on-chip LCD driver, and robust analog/peripheral sets for cost-sensitive, battery-operated systems.

FAQ

What is the maximum operating frequency and performance of the R5F10RLCGFA#10?

The R5F10RLCGFA#10 operates at up to 24 MHz using its high-speed on-chip oscillator with ±1% accuracy across 1.8–5.5 V and −20°C to +85°C. It delivers 31 DMIPS of processing performance, and 86% of instructions execute in just 1–2 clock cycles due to its optimized 3-stage pipeline RL78 core.

Does the R5F10RLCGFA#10 support LCD bias generation without external components?

Yes, the R5F10RLCGFA#10 integrates an LCD controller with three bias methods: capacitor-split, internal voltage boost (using CAPL/CAPH and VL1–VL4), and external resistor division. With appropriate external capacitors, it drives LCDs up to 39 segments × 4 commons without requiring external bias ICs.

What low-power modes does the R5F10RLCGFA#10 support, and what are their typical currents?

The R5F10RLCGFA#10 supports Stop mode (0.23 µA, RAM retained), Halt mode (0.64 µA with RTC + LVD active), and Snooze mode for peripheral-triggered wake-up. Active-mode current is 62.5 µA/MHz, and LCD operating current is as low as 0.12 µA (capacitor-split method), enabling multi-year battery life in metering applications.

Can the R5F10RLCGFA#10 perform analog-to-digital conversion below 1.8 V?

Yes, the R5F10RLCGFA#10's 10-bit ADC operates down to 1.6 V supply voltage and includes an internal 1.45 V reference. This allows accurate analog sensing (e.g., battery voltage, temperature) even during deep battery discharge, without requiring external voltage references or level-shifting circuitry.

Is the R5F10RLCGFA#10 pin-compatible with other RL78/L12 variants in the same package?

Yes, all RL78/L12 devices in the 64-pin LQFP-0.65 mm pitch package (e.g., R5F10RLCAFA#10, R5F10RLCGFA#10, R5F10RLAGFA#10) share identical pinouts and electrical characteristics. Memory size, temperature grade (A vs. G), and flash configuration differ, but hardware design and PCB layout remain fully interchangeable.