Renesas R5F10WMEAFB#50

Overview

R5F10WMEAFB#50 from Renesas is an 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) 16-bit RL78/L13 microcontroller with 48 KB flash, 2 KB RAM, and integrated LCD controller/driver supporting up to 51 segment × 8 common outputs. It operates from 1.6 V to 5.5 V, achieves 31 DMIPS at 24 MHz, and delivers ultra-low power consumption down to 71 μA/MHz in active mode and 0.61 μA in RTC+LVD STOP mode - optimized for battery-powered LCD displays in consumer metering and portable HMI.

For engineers reviewing the R5F10WMEAFB#50 datasheet, R5F10WMEAFB#50 pinout, R5F10WMEAFB#50 application, or R5F10WMEAFB#50 equivalent, key selection considerations include its 80-pin LFQFP package with dual UART + LIN support, on-chip 4 KB data flash with 1M-cycle endurance, 12-channel 8/10-bit ADC, and hardware RTC with calendar and alarm - all within a -40°C to +85°C industrial-grade temperature range.

Technical Context

The R5F10WMEAFB#50 implements the RL78 CPU core - a CISC architecture with 3-stage pipeline and configurable instruction timing (0.04167 µs min @ 24 MHz, 30.5 µs @ 32.768 kHz). It integrates a dedicated 16-bit timer KB20 for high-accuracy PWM and supports background operation during data flash rewriting via BGO.

Its peripheral set includes four serial interfaces (UART0/1/2/3, CSI0/1, IICA0/1), two comparators with selectable internal/external reference, and a flexible LCD driver supporting voltage boosting, capacitor split, or resistor division methods - all managed through dedicated SFRs and PIOR register-based I/O redirection.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMEAFB#50, the R5F10WMFAFB#50 offers headroom for complex HMI logic and field-upgradable firmware, while the R5F10WMEGFB#50 maintains identical functionality with guaranteed operation up to +105°C - enabling reuse of PCB layout and firmware across consumer and industrial variants.

Availability

R5F10WMEAFB#50 is available at Aetrix Electronics and suitable for smart metering, portable medical devices, home appliance control panels, and industrial HMI modules requiring stable component supply and long-term production continuity.

Supply support for R5F10WMEAFB#50 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L13 product line targets ultra-low-power LCD-based applications - delivering integrated timing, sensing, display, and communication in a single chip for cost-sensitive, battery-operated human interface devices.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F10WMEAFB#50?

The R5F10WMEAFB#50 achieves 24 MHz using its high-speed on-chip oscillator with ±1.0% accuracy (VDD = 1.8–5.5 V, TA = –20 to +85°C). At this frequency, active-mode current is 71 μA/MHz - resulting in ~1.7 mA total at 24 MHz. In STOP mode with RTC + LVD enabled, it draws only 0.61 μA, making it ideal for intermittent-readout applications like utility meters.

Does the R5F10WMEAFB#50 support hardware-based LIN bus communication?

Yes, the R5F10WMEAFB#50 supports LIN bus communication via UART2 with dedicated LINSEL pin control. Its UART2 peripheral includes automatic sync-break detection, checksum generation/verification, and configurable baud rates - meeting LIN 2.2A specification requirements without external transceiver logic for basic node implementations.

How many LCD segments and commons does the R5F10WMEAFB#50 support, and what drive methods are available?

The R5F10WMEAFB#50 supports up to 51 segment outputs and 8 common outputs. It implements three LCD drive methods: internal voltage boosting (for 3–5 V supplies), capacitor split (for low-voltage operation), and external resistance division (for precise bias control). Segment/common assignments are fully configurable via dedicated LCD registers and memory-mapped RAM.

Can the R5F10WMEAFB#50 perform ADC conversions while executing code from flash?

Yes, the R5F10WMEAFB#50 supports concurrent ADC operation and program execution. Its 8/10-bit ADC can trigger conversions via software, timer, or external event, and results are stored in dedicated SFRs or memory via DMA - enabling real-time sensor monitoring without CPU polling overhead or flash access stalls.

What debug and programming interfaces are supported by the R5F10WMEAFB#50?

The R5F10WMEAFB#50 features on-chip debug support via the TOOLRxD/TOOLTxD pins (P17/P00), compatible with Renesas E2 emulator and standard SWD/JTAG adapters. It supports flash self-programming with boot swap and flash shield window functions - enabling secure field firmware updates and protected bootloader implementation.