Renesas R5F10WLFAFA#30

Overview

R5F10WLFAFA#30 from Renesas is a 64-pin LQFP (12 × 12 mm, 0.65 mm pitch), 64 KB Flash, 4 KB Data Flash, 4 KB RAM RL78/L13 microcontroller with integrated LCD controller/driver (36 segment / 4 common), 12-channel 10-bit A/D converter, and ultra-low power operation down to 71 μA/MHz. It targets battery-powered LCD-based consumer devices such as smart meters, thermostats, and portable medical displays.

For engineers reviewing the R5F10WLFAFA#30 datasheet, R5F10WLFAFA#30 pinout, R5F10WLFAFA#30 application, or R5F10WLFAFA#30 equivalent, key selection criteria include its 64-pin LQFP package with dedicated LCD segment/common outputs, 1.6–5.5 V single-supply operation, STOP/HALT/SNOOZE low-power modes, and support for LIN-bus via UART2 - all validated for TA = −40 to +85°C consumer applications.

Technical Context

The R5F10WLFAFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction execution time (0.04167 µs at 24 MHz high-speed on-chip oscillator or 30.5 µs at 32.768 kHz subsystem clock). Its memory map spans 1 MB address space with 64 KB code flash organized in 1 KB blocks and 4 KB data flash supporting background operation (BGO) and 1,000,000 write cycles.

Peripheral integration includes an 8-channel 16-bit Timer Array Unit (TAU) with PWM and remote control output, dual comparators with selectable internal/external reference, RTC2 with calendar and alarm, and a flexible LCD controller supporting voltage-boosting, capacitor-split, or resistor-division bias methods - all accessible through dedicated pins mapped to P0–P7, P12–P13, and COM/SEG groups.

Key Specifications

Pinout & Package

Package: 64-pin plastic LQFP (12 × 12 mm, 0.65 mm pitch), RoHS-compliant, tray packaging (#30).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WLFAFA#30, R5F10WLEAFA#30 offers reduced memory at identical package size and power profile, while R5F10WMFAFA#30 expands I/O and memory in a larger 80-pin footprint - enabling scalable design reuse across product tiers without architectural redesign.

Availability

R5F10WLFAFA#30 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10WLFAFA#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, combining true low-power operation, integrated display control, and robust analog peripherals for cost-sensitive consumer and industrial displays.

FAQ

What is the maximum operating frequency and associated power consumption of the R5F10WLFAFA#30?

The R5F10WLFAFA#30 achieves 24 MHz operation using its high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and −40 to +85°C. At this frequency, active current is specified at 71 μA/MHz - meaning ~1.7 mA typical at 24 MHz. This enables responsive UI updates while maintaining ultra-low average power in duty-cycled applications.

Does the R5F10WLFAFA#30 support hardware-based LCD bias generation without external components?

Yes. The R5F10WLFAFA#30 integrates an LCD controller capable of internal voltage boosting, capacitor-split, or external resistor-division bias methods. With appropriate external capacitors (CAPH/CAPL) and VL1–VL4 connections, it drives 36-segment × 4-common LCDs directly - eliminating external charge pumps or bias resistors required by most general-purpose MCUs.

How many analog input channels does the R5F10WLFAFA#30 support, and what reference options are available?

The R5F10WLFAFA#30 features a 12-channel, 10-bit A/D converter with inputs ANI0–ANI12. It supports internal 1.45 V reference (selected only in HS mode), external reference via AVREFP/AVREFM pins, or VDD as reference - providing flexibility for precision sensor measurements or cost-optimized designs where VDD tracking suffices.

Can the R5F10WLFAFA#30 operate reliably across the full industrial temperature range?

No. The R5F10WLFAFA#30 is rated for consumer applications with TA = −40 to +85°C. For industrial use up to +105°C, Renesas specifies variants with 'G' suffix (e.g., R5F10WLFGFB#30) - which share identical functionality but undergo extended temperature qualification and are packaged in LFQFP (0.5 mm pitch).

What debug and programming interfaces are supported by the R5F10WLFAFA#30?

The R5F10WLFAFA#30 includes a full on-chip debug interface accessible via TOOLRxD/TOOLTxD (P17/P00) and TOOL0 (P40). It supports flash programming, breakpoint debugging, and real-time variable monitoring without requiring external JTAG adapters - simplifying development and field firmware updates using standard UART-based tools.