Renesas R5F10WMCAFA#30

Overview

R5F10WMCAFA#30 from Renesas is an 80-pin LQFP (14 × 14 mm, 0.65 mm pitch) 16-bit RL78/L13 microcontroller with 32 KB code flash, 4 KB data flash, 1.5 KB RAM, integrated LCD controller/driver (51 segment / 4 common outputs), and ultra-low-power operation down to 71 μA/MHz. It features a 24 MHz high-speed on-chip oscillator (±1.0 % accuracy), 12-channel 8/10-bit ADC, dual comparators, and UART/LIN, CSI, and I²C interfaces - designed for battery-powered LCD-based consumer instrumentation.

For engineers reviewing the R5F10WMCAFA#30 datasheet, R5F10WMCAFA#30 pinout, R5F10WMCAFA#30 application, or R5F10WMCAFA#30 equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in LCD metering and portable HMI, and two confirmed alternative parts with documented functional trade-offs.

Technical Context

The R5F10WMCAFA#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports four clock modes (HS/LS/LV/subsystem), enabling dynamic power scaling from 24 MHz high-speed execution (0.04167 µs min instruction time) down to 32.768 kHz RTC operation (30.5 µs).

Its integrated peripherals include an 8-channel timer array unit (TAU) with PWM and remote control output, 16-bit timer KB20 for precise timing, 4-channel DMA, and LCD driver configurable for internal voltage boosting or external resistor division - all operating across 1.6 V to 5.5 V supply range with POR, LVD (14-level selectable), and watchdog reset support.

Key Specifications

Pinout & Package

Package: 80-pin plastic LQFP (14 × 14 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 R5F10WMCAFA#30, R5F10WMDAFA#30 offers double flash capacity for enhanced feature sets, while R5F10WLCAFA#30 trades I/O and LCD scalability for compact footprint - both retain identical low-power architecture and toolchain compatibility.

Availability

R5F10WMCAFA#30 is available at Aetrix Electronics and suitable for smart meter displays, portable medical instruments, home appliance control panels, and industrial panel meters requiring stable component supply and long-term manufacturability.

Supply support for R5F10WMCAFA#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 targets ultra-low-power LCD-based applications, integrating display driving, sensing, and communication in a single chip to minimize system cost and power consumption.

FAQ

What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F10WMCAFA#30?

The R5F10WMCAFA#30 features a high-speed on-chip oscillator selectable up to 24 MHz with ±1.0 % accuracy over VDD = 1.8–5.5 V and TA = –20 to +85°C. This eliminates need for external crystal in cost-sensitive applications while maintaining timing integrity for UART and LCD frame timing.

Does R5F10WMCAFA#30 support true background data flash rewriting?

Yes, R5F10WMCAFA#30 supports background operation (BGO): it can execute instructions from program memory while simultaneously rewriting data flash memory. This enables seamless firmware updates and nonvolatile parameter storage without halting application execution.

How many LCD segments and commons does R5F10WMCAFA#30 drive, and what drive methods are supported?

R5F10WMCAFA#30 drives up to 51 segment and 4 common outputs. It supports three LCD drive configurations: internal voltage boosting (no external components), capacitor split method, and external resistance division - allowing optimization for contrast, power, and bill-of-materials.

What is the ADC resolution and input channel count on R5F10WMCAFA#30?

R5F10WMCAFA#30 includes a 12-channel 8/10-bit successive approximation ADC with selectable resolution per channel. It features internal 1.45 V reference voltage and integrated temperature sensor - enabling accurate analog measurements without external references.

Can R5F10WMCAFA#30 generate IR remote control carrier signals directly?

Yes, R5F10WMCAFA#30 integrates dedicated TKBO (Transmit Key Button Output) functions on pins P74–P77. These outputs generate 30–60 kHz carrier signals for IR remote control protocols, eliminating need for external carrier generators in remote-enabled HMI designs.