Renesas R5F10WLEAFB#30

Overview

R5F10WLEAFB#30 from Renesas is a 64-pin RL78/L13 16-bit 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, achieves 31 DMIPS at 24 MHz, and delivers ultra-low power consumption (71 μA/MHz active, 0.61 μA in RTC+LVD STOP mode), targeting battery-powered LCD display systems such as smart meters and portable medical devices.

For engineers reviewing the R5F10WLEAFB#30 datasheet, R5F10WLEAFB#30 pinout, R5F10WLEAFB#30 application, or R5F10WLEAFB#30 equivalent, key selection considerations include its 36-segment/4-common LCD drive capability, dual comparators with internal reference, 9-channel 8/10-bit ADC, UART/LIN support, and LFQFP-64 (10 × 10 mm, 0.5 mm pitch) package for space-constrained embedded displays.

Technical Context

The R5F10WLEAFB#30 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 LCD controller supporting internal voltage boosting, capacitor split, or external resistor division methods, and features a 12-bit interval timer plus RTC2 with calendar and alarm functions.

Its peripheral set includes four DMA channels, a 16-bit timer array (TAU) with 8 channels and PWM output capability, two independent comparators with selectable internal/external references, and serial interfaces comprising CSI, UART (with LIN support), and simplified I²C-all accessible via flexible peripheral I/O redirection (PIOR) for pin assignment optimization.

Key Specifications

Pinout & Package

Package: LFQFP-64 (10 × 10 mm, 0.5 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 R5F10WLDAB#30, the R5F10WLEAFB#30 provides 16 KB more flash and 0.5 KB more RAM for enhanced feature sets; versus R5F10WMFAFB#30, it offers identical functionality in a smaller 64-pin footprint-reducing PCB area and cost where full 80-pin I/O is unnecessary.

Availability

R5F10WLEAFB#30 is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial HMI panels, and home appliance interfaces requiring stable component supply across long-lifecycle designs.

Supply support for R5F10WLEAFB#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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The RL78/L13 product line is engineered specifically for ultra-low-power LCD-based human-machine interfaces, integrating display control, analog sensing, and robust communication in a single chip for cost-sensitive, battery-operated endpoints.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F10WLEAFB#30?

The R5F10WLEAFB#30 achieves a maximum system clock of 24 MHz using its high-accuracy on-chip oscillator (±1.0% over –40°C to +85°C), delivering 31 DMIPS. Its minimum instruction execution time is 0.04167 µs under this condition. The device also supports lower-speed modes-including 32.768 kHz subsystem clock-for ultra-low-power RTC and wake-up operations.

Does the R5F10WLEAFB#30 support LIN bus communication?

Yes, the R5F10WLEAFB#30 supports LIN bus communication through its UART channel (UART1), which includes LIN-bus protocol features such as automatic sync-break detection and LIN-specific baud rate generation. This capability is confirmed in the RL78/L13 datasheet Section 1.1 under "Serial interface" and verified in the functional outline table on page 16.

How many LCD segments and commons does the R5F10WLEAFB#30 drive, and what bias methods are supported?

The R5F10WLEAFB#30 drives up to 36 segment and 4 common outputs (or 32 segments with 8 commons). It supports three LCD bias generation methods: internal voltage boosting, capacitor split, and external resistance division-enabling flexibility across different LCD glass types and supply constraints without external components.

What are the power supply requirements and low-power modes available on the R5F10WLEAFB#30?

The R5F10WLEAFB#30 operates from a single 1.6 V to 5.5 V supply and features HALT, STOP, and SNOOZE low-power modes. In STOP mode with RTC and LVD active, it consumes just 0.61 μA. Its true low-power design targets multi-year battery life in endpoint devices, with POR/LVD circuitry ensuring reliable reset behavior across voltage transients.

Can the R5F10WLEAFB#30 perform self-programming of its flash memory during runtime?

Yes, the R5F10WLEAFB#30 supports full self-programming of both code and data flash memory, including background operation (BGO) for data flash writes. It implements flash shield window and boot swap functions-enabling secure, field-upgradable firmware without external programming hardware or system interruption.