Renesas R5F10WLFAFA#10

Overview

R5F10WLFAFA#10 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 16-bit microcontroller with integrated LCD controller/driver (36 segment / 4 common outputs), ultra-low power operation (71 μA/MHz active, 0.61 μA in RTC+LVD STOP mode), and 1.6–5.5 V supply range - designed for battery-powered LCD display systems including smart meters and portable medical devices.

For engineers reviewing the R5F10WLFAFA#10 datasheet, R5F10WLFAFA#10 pinout, R5F10WLFAFA#10 application, or R5F10WLFAFA#10 equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and application-level differences.

Technical Context

The R5F10WLFAFA#10 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). It integrates a 12-bit interval timer, RTC2 with calendar and alarm, and dual comparator channels supporting window, high-speed, and low-speed modes.

Its peripheral set includes 8-channel 16-bit Timer Array Unit (TAU) with PWM and remote control output, 4-channel DMA, UART/CSI/I²C serial interfaces, and an 8/10-bit 9-channel A/D converter with internal 1.45 V reference and temperature sensor - all operating within the same 1.6–5.5 V voltage range and -40 to +85°C ambient temperature grade.

Key Specifications

Pinout & Package

64-pin plastic LQFP package (12 × 12 mm, 0.65 mm pitch); REGC requires 0.47–1 μF capacitor to VSS. Pin functions are fixed per physical pin number and validated per datasheet Table 1-1 (64-pin products).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WLEAFA#10, the R5F10WLFAFA#10 provides 16 KB more Flash and 2 KB more RAM for complex display logic or data logging; versus R5F10WMFAFA#10, it offers identical functionality in a smaller 64-pin footprint and lower power profile - ideal for space-constrained, battery-sensitive LCD applications.

Availability

R5F10WLFAFA#10 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, and home appliance control panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10WLFAFA#10 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 human-machine interfaces, combining true low-power operation (down to 0.61 μA), integrated display drivers, and robust mixed-signal peripherals for cost-sensitive, battery-operated applications.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F10WLFAFA#10?

The R5F10WLFAFA#10 achieves 24 MHz operation using its high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C. At this speed, active current is specified at 71 μA/MHz - resulting in ~1.7 mA typical consumption. Its STOP mode draws only 0.61 μA with RTC and LVD active, enabling multi-year battery operation in always-on display applications.

Does the R5F10WLFAFA#10 support hardware-based LCD bias generation without external components?

Yes. The R5F10WLFAFA#10 integrates three LCD bias methods: internal voltage boosting (for 3–5 V supplies), capacitor split (for 2.5–5.5 V), and external resistor division (for 1.6–5.5 V). This eliminates need for external bias ICs or charge pumps - reducing BOM count and board area while maintaining display contrast across varying supply voltages.

How many analog input channels does the R5F10WLFAFA#10 support, and what reference options are available?

The R5F10WLFAFA#10 features a 9-channel 8/10-bit A/D converter with selectable resolution. It supports VDD as reference, internal 1.45 V bandgap reference (usable only in HS mode), and external reference via IVREF0/IVREF1 pins. The internal temperature sensor is accessible through ANI0, enabling system thermal monitoring without external components.

Can the R5F10WLFAFA#10 generate audible tones directly, and what frequency ranges are supported?

Yes. The R5F10WLFAFA#10 includes a dedicated clock output/buzzer controller with two independent outputs (PCLBUZ0/PCLBUZ1). It supports frequencies from 256 Hz to 32.768 kHz in subsystem clock mode and 2.44 kHz to 10 MHz in main clock mode - enabling direct piezo buzzer drive or clock signal generation without external oscillators or timers.

What debug and programming interfaces are available on the R5F10WLFAFA#10?

The R5F10WLFAFA#10 supports full on-chip debugging via TOOL0, TOOLRxD, and TOOLTxD pins (shared with P40, P17, P00), compatible with Renesas E2 emulator and E2 Lite. It also supports self-programming with boot swap and flash shield window functions - enabling secure over-the-air or field firmware updates without external programmers.