Renesas R5F10WMEAFA#30

Overview

R5F10WMEAFA#30 from Renesas is an RL78/L13 80-pin LQFP microcontroller with integrated LCD controller/driver, 48 KB flash, 2 KB RAM, and 4 KB data flash. It operates from 1.6 V to 5.5 V, delivers 31 DMIPS at 24 MHz, and achieves ultra-low power consumption (71 μA/MHz active, 0.61 μA in RTC+LVD mode), targeting battery-powered LCD-based consumer devices such as smart meters and portable medical displays.

For engineers reviewing the R5F10WMEAFA#30 datasheet, R5F10WMEAFA#30 pinout, R5F10WMEAFA#30 application, or R5F10WMEAFA#30 equivalent, key selection criteria include its 12-channel 8/10-bit ADC, dual comparators with internal reference, 3 UART channels (including LIN support), 80-pin LQFP-0.65 mm package, and hardware RTC with calendar and alarm functions.

Technical Context

The R5F10WMEAFA#30 implements the RL78 CPU core-a CISC architecture with 3-stage pipeline and 1 MB address space-paired with a dedicated LCD controller supporting up to 51 segment × 8 common outputs via switchable voltage-boosting methods. Its timing subsystem integrates a high-accuracy ±1.0% on-chip oscillator (selectable from 1–48 MHz), low-speed 32.768 kHz subsystem clock, and independent 12-bit interval timer.

Peripheral integration includes a 4-channel DMA controller enabling background data flash rewrites (1M-cycle endurance), 8-channel 16-bit timer array with PWM and remote control output, and serial interfaces: CSI0/CSI1, IICA0/IICA1, and three UARTs (UART0–UART2, with UART2 supporting LIN-bus protocol). Power management features HALT, STOP, and SNOOZE modes with on-chip POR and 14-level LVD.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (14 × 14 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 R5F10WMEAFA#30, R5F10WMGAFB#30 offers scalable memory for complex UI logic, while R5F10WLEAFA#30 trades I/O count and peripherals for smaller footprint - both retain identical core architecture, LCD driver, and low-power profile.

Availability

R5F10WMEAFA#30 is available at Aetrix Electronics and suitable for smart energy meters, portable medical devices, and home appliance control panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10WMEAFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L13 product line is engineered for ultra-low-power LCD-based applications, integrating high-efficiency CPU, comprehensive peripheral sets, and hardware-accelerated display control to minimize system-level power and component count.

FAQ

What is the maximum operating frequency and associated power consumption of the R5F10WMEAFA#30?

The R5F10WMEAFA#30 achieves 31 DMIPS at 24 MHz using its high-accuracy ±1.0% on-chip oscillator. At this frequency, active current is specified at 71 μA/MHz (typical), equating to ~1.7 mA total at 24 MHz under standard conditions. This balance of performance and efficiency makes the R5F10WMEAFA#30 ideal for responsive yet battery-conscious LCD applications.

Does the R5F10WMEAFA#30 support hardware-based real-time clock functionality with calendar and alarm features?

Yes, the R5F10WMEAFA#30 integrates Real-Time Clock 2 (RTC2) with full calendar support (99-year range), programmable alarm, and automatic clock correction. It operates independently in STOP mode with only 0.61 μA current draw when paired with the low-voltage detector (LVD), enabling precise timekeeping without external RTC ICs or continuous CPU intervention.

How many LCD segments and commons does the R5F10WMEAFA#30 support, and what drive methods are available?

The R5F10WMEAFA#30 supports up to 51 segment and 8 common outputs, enabling 408-segment displays. It provides three configurable LCD bias methods: internal voltage boosting, capacitor split, and external resistance division - allowing optimization for contrast, power, and external component count based on display type and supply constraints.

Can the R5F10WMEAFA#30 perform background data flash writes while executing application code?

Yes, the R5F10WMEAFA#30 supports Background Operation (BGO) for data flash. While rewriting its 4 KB data flash memory (rated for 1,000,000 write cycles), the CPU can continue executing instructions from code flash - essential for reliable firmware updates, parameter storage, and over-the-air (FOTA) deployments without system interruption.

What UART capabilities does the R5F10WMEAFA#30 offer, and is LIN bus supported?

The R5F10WMEAFA#30 includes three UART channels: UART0, UART1, and UART2. UART2 explicitly supports LIN-bus protocol (LIN 2.2A compliant), including automatic sync-break detection and checksum generation. All UARTs operate across the full 1.6–5.5 V supply range and support standard baud rates up to 1 Mbps, enabling robust communication with sensors, displays, and host controllers.