Renesas R5F10WLEAFA#10

Overview

R5F10WLEAFA#10 from Renesas is a 64-pin LQFP (12 × 12 mm, 0.65 mm pitch) 16-bit RL78/L13 microcontroller with 48 KB flash, 2 KB RAM, integrated LCD controller/driver (36 segment / 4 common outputs), and ultra-low-power operation down to 71 μA/MHz. It features a 24 MHz RL78 CPU core delivering 31 DMIPS, dual serial interfaces (UART + CSI + I²C), and operates across 1.6–5.5 V for battery-powered LCD instrumentation.

For engineers reviewing the R5F10WLEAFA#10 datasheet, R5F10WLEAFA#10 pinout, R5F10WLEAFA#10 application, or R5F10WLEAFA#10 equivalent, key selection criteria include its consumer-grade temperature range (−40°C to +85°C), on-chip RTC+LVD, 9-channel 10-bit ADC, and support for remote control output (REMOOUT) and buzzer clock generation in compact LCD-based embedded systems.

Technical Context

The R5F10WLEAFA#10 implements the RL78 CISC CPU core with 3-stage pipeline, supporting variable instruction execution time (0.04167 µs at 24 MHz high-speed mode, 30.5 µs at 32.768 kHz subsystem clock). Its memory architecture includes 48 KB code flash (1 KB block size), 4 KB data flash with background operation (BGO), and 2 KB on-chip RAM.

Peripherals are tightly integrated for LCD-centric applications: LCD controller supports internal voltage boosting, capacitor split, or external resistor division; dual comparators (IVCMP0/IVCMP1) with selectable reference sources; and timer array unit (TAU) with 8 channels-including PWM, interval timing, and REMOOUT-plus dedicated 16-bit timer KB20 for high-accuracy timing.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WLDFA#10, the R5F10WLEAFA#10 provides 16 KB more flash and 0.5 KB more RAM for complex display logic and sensor fusion, while R5F10WLFAFA#10 adds further headroom for bootloader and secure firmware updates-making R5F10WLEAFA#10 the optimal balance for mid-tier LCD instrumentation.

Availability

R5F10WLEAFA#10 is available at Aetrix Electronics and suitable for smart thermostat displays, portable medical meters, and industrial panel meters requiring stable component supply and long-term manufacturability.

Supply support for R5F10WLEAFA#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The RL78/L13 product line targets ultra-low-power LCD-based human-machine interfaces, emphasizing integration of display control, sensor interfacing, and energy-efficient operation in compact form factors.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F10WLEAFA#10?

The R5F10WLEAFA#10 operates at up to 24 MHz using its high-speed on-chip oscillator, delivering 31 DMIPS. Its minimum instruction execution time is 0.04167 µs under this condition. The RL78 CPU core maintains deterministic timing across all modes, including 32.768 kHz RTC operation where execution time extends to 30.5 µs per instruction-enabling precise low-power scheduling without sacrificing real-time responsiveness in the R5F10WLEAFA#10.

Does the R5F10WLEAFA#10 support hardware-based remote control carrier generation?

Yes, the R5F10WLEAFA#10 includes dedicated REMOOUT functionality on TAU channel 3 (TI03/TO03/P30), enabling hardware generation of standard IR carrier frequencies (e.g., 38 kHz) without CPU intervention. This offloads timing-critical waveform generation, preserves CPU bandwidth for display updates and sensor processing, and ensures jitter-free output-critical for reliable IR reception in applications using the R5F10WLEAFA#10 as a remote-controlled UI controller.

How does the LCD controller in the R5F10WLEAFA#10 handle different LCD bias configurations?

The R5F10WLEAFA#10 LCD controller supports three bias methods: internal voltage boosting, capacitor split, and external resistance division-selected via register configuration. This flexibility allows direct drive of common STN and HTN LCDs with varying V_LCD requirements (e.g., 3.0 V or 4.5 V) without external charge pumps or resistor networks, reducing bill-of-materials cost and PCB area in designs based on the R5F10WLEAFA#10.

What are the data retention and endurance specifications for the data flash memory in the R5F10WLEAFA#10?

The R5F10WLEAFA#10 integrates 4 KB of data flash memory rated for 1,000,000 write/erase cycles (typical) with data retention exceeding 20 years at +85°C. It supports background operation (BGO), allowing program execution from code flash while rewriting data flash-enabling seamless firmware parameter updates, calibration storage, or usage logging without system interruption in deployed R5F10WLEAFA#10 units.

Can the R5F10WLEAFA#10 operate from a single 1.8 V supply, and what features remain functional?

Yes, the R5F10WLEAFA#10 supports operation from 1.6 V to 5.5 V, including 1.8 V. At 1.8 V, the high-speed on-chip oscillator runs up to 16 MHz, flash access remains fully functional, and all peripherals-including LCD controller, 10-bit ADC, comparators, and UART-retain specification compliance. This enables direct compatibility with 1.8 V logic domains and low-voltage battery systems, making the R5F10WLEAFA#10 suitable for energy-harvesting or ultra-low-power portable designs.