Renesas R5F10RLAAFA#30

Overview

R5F10RLAAFA#30 from Renesas is a 64-pin LQFP (12 × 12 mm, 0.65 mm pitch) 16-bit RL78/L12 microcontroller with 16 KB flash, 2 KB data flash, 1 KB RAM, integrated LCD controller/driver (up to 39 seg × 4 com), and ultra-low-power operation (0.64 µA in RTC+LVD mode). It targets battery-powered LCD display systems such as smart meters, thermostats, and portable medical devices.

For engineers reviewing the R5F10RLAAFA#30 datasheet, R5F10RLAAFA#30 pinout, R5F10RLAAFA#30 application, or R5F10RLAAFA#30 equivalent, key selection criteria include its 24 MHz max CPU frequency (31 DMIPS), 10-bit ADC with 10 channels, on-chip high-speed oscillator (±1% accuracy), and support for capacitor-split and internal-boost LCD drive methods.

Technical Context

The R5F10RLAAFA#30 implements the RL78 16-bit CISC Harvard architecture with 3-stage pipeline, enabling 86% of instructions in 1–2 clock cycles. Its low-power design integrates a voltage regulator (REGC), POR/LVD reset system, and multiple sleep modes including Stop (0.23 µA) and Halt (0.64 µA).

It features dual-clock domains: a high-speed main system clock (up to 24 MHz via on-chip oscillator or external crystal) and a 32.768 kHz subsystem clock for RTC. The LCD controller supports waveform types A/B, 16-step contrast adjustment, and blinking-configured independently of CPU activity via dedicated RAM space.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, operating ambient temperature −40°C to +85°C (Consumer grade A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RLAAFA#30, R5F10RLCAFA#30 provides double flash and 50% more RAM for feature-rich firmware, while R5F10RJAAFA#30 trades 12 pins and 9 LCD segments for smaller footprint-both retain identical peripheral sets and low-power performance.

Availability

R5F10RLAAFA#30 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical monitors requiring stable component supply across multi-year production cycles.

Supply support for R5F10RLAAFA#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 management solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line is engineered for ultra-low-power LCD-based applications-integrating precision timing, robust analog interfaces, and certified safety features into a single chip for cost-sensitive consumer and industrial displays.

FAQ

What is the maximum operating frequency and processing performance of the R5F10RLAAFA#30?

The R5F10RLAAFA#30 operates at up to 24 MHz using its on-chip high-speed oscillator and delivers 31 DMIPS. Its RL78 16-bit CPU core executes 86% of instructions in just 1–2 clock cycles due to its 3-stage pipeline and CISC architecture-making it suitable for real-time sensor processing and display control in the R5F10RLAAFA#30.

Does the R5F10RLAAFA#30 support LCD display driving, and what configurations are available?

Yes, the R5F10RLAAFA#30 integrates a full LCD controller/driver supporting up to 39 segments × 4 commons. It offers three drive methods: capacitor-split, internal voltage boost, and resistance division-with independent waveform type A/B selection and 16-step contrast adjustment-all managed in hardware without CPU intervention in the R5F10RLAAFA#30.

What low-power modes does the R5F10RLAAFA#30 offer, and what is the lowest current consumption?

The R5F10RLAAFA#30 supports Stop mode (0.23 µA RAM-retained) and Halt mode (0.64 µA with RTC + LVD active). In Halt mode, the real-time clock continues counting and the low-voltage detector remains functional-enabling decade-long battery operation in metering and monitoring applications using the R5F10RLAAFA#30.

How much memory does the R5F10RLAAFA#30 include, and is it self-programmable?

The R5F10RLAAFA#30 contains 16 KB of code flash memory, 2 KB of data flash memory (rated for 1 million erase cycles), and 1 KB of RAM. Both flash types support self-programming with flash shield window protection-allowing secure firmware updates and parameter storage directly within application code running on the R5F10RLAAFA#30.

Is the R5F10RLAAFA#30 compliant with functional safety standards for household appliances?

Yes, the R5F10RLAAFA#30 includes IEC/UL 60730-compliant safety features: flash memory CRC calculation, RAM parity error checking, SFR write protection, illegal memory access detection, and ADC self-test. These capabilities enable certified Class B appliance designs without external safety monitors in the R5F10RLAAFA#30.