Renesas R5F10WMEAFB#30

Overview

R5F10WMEAFB#30 from Renesas is an 80-pin LFQFP ultra-low-power 16-bit RL78/L13 MCU with 48 KB flash, 2 KB RAM, integrated LCD controller/driver (51 segment/4 common), 12-channel 8/10-bit ADC, and dual UARTs-including one LIN-capable channel-targeting battery-powered LCD display systems such as smart meters and portable medical devices.

For engineers reviewing the R5F10WMEAFB#30 datasheet, R5F10WMEAFB#30 pinout, R5F10WMEAFB#30 application, or R5F10WMEAFB#30 equivalent, key selection criteria include its 1.6–5.5 V operation range, 71 μA/MHz active current, RTC+LVD standby at 0.61 μA, 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch) package, and support for capacitor-split LCD biasing.

Technical Context

The R5F10WMEAFB#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, delivering 31 DMIPS at 24 MHz using its high-accuracy ±1.0% on-chip oscillator. It integrates a dedicated 16-bit timer KB20 for PWM output and supports background data flash rewriting (BGO) with 1M write cycles.

Its peripheral set includes four DMA channels, two comparators with selectable internal/external reference, programmable clock/buzzer outputs, and flexible I/O with N-ch open-drain capability (6 V tolerant on two pins). The LCD controller supports three bias methods-internal boosting, capacitor split, and external resistor division-enabling direct drive of segmented displays up to 51 segments.

Key Specifications

Pinout & Package

Package: 80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), compliant with JEDEC MS-026. Pin 1 marked by dot; REGC requires 0.47–1 μF capacitor to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMEAFB#30, the R5F10WMFAFB#30 offers 48 KB more flash for feature-rich firmware, while the R5F10WMEGFB#30 maintains identical functionality but guarantees operation up to +105°C-critical for enclosed industrial enclosures or automotive under-hood proximity.

Availability

R5F10WMEAFB#30 is available at Aetrix Electronics and suitable for smart energy meters, portable medical devices, home appliance control panels, and industrial HMI modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10WMEAFB#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 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 delivers true low-power performance for LCD-based human-machine interfaces, combining ultra-low active and standby currents with integrated display drivers and robust peripheral sets for cost-sensitive embedded applications.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R5F10WMEAFB#30?

The R5F10WMEAFB#30 achieves 31 DMIPS at 24 MHz using its high-accuracy on-chip oscillator. At this frequency, typical active current is 71 μA/MHz - meaning ~1.7 mA total at 24 MHz with all peripherals active. This value assumes VDD = 3.3 V and TA = 25°C per the datasheet's electrical characteristics table.

Does the R5F10WMEAFB#30 support hardware-based infrared remote control transmission?

Yes, the R5F10WMEAFB#30 includes a dedicated REMOOUT function on pin P30 that generates standard 38 kHz IR carrier signals directly in hardware. This offloads timing-critical modulation from the CPU, enabling reliable remote control output without software intervention or additional components.

How many LCD segments can the R5F10WMEAFB#30 drive, and what bias methods are supported?

The R5F10WMEAFB#30 drives up to 51 segment outputs and 4 common outputs. It supports three LCD bias configurations: internal voltage boosting, capacitor-split (requiring only two external capacitors), and external resistor division - giving designers flexibility to optimize BOM cost and board space.

What are the key differences between the R5F10WMEAFB#30 and R5F10WMEGFB#30?

The R5F10WMEAFB#30 and R5F10WMEGFB#30 share identical memory (48 KB flash, 2 KB RAM), peripherals, and pinout. Their sole difference is temperature grade: R5F10WMEAFB#30 is rated for -40°C to +85°C (consumer grade), while R5F10WMEGFB#30 is rated for -40°C to +105°C (industrial grade), making it suitable for harsher thermal environments.

Can the R5F10WMEAFB#30 perform simultaneous analog-to-digital conversion and flash programming?

Yes, the R5F10WMEAFB#30 supports Background Operation (BGO) for data flash. While executing code from program memory, it can rewrite data flash sectors - enabling concurrent ADC sampling, processing, and non-volatile parameter logging without CPU suspension or system interruption.