Renesas R5F10WMFAFB#10

Overview

R5F10WMFAFB#10 from Renesas is an 80-pin RL78/L13 16-bit microcontroller with integrated LCD controller/driver, 96 KB flash, 4 KB data flash, and 6 KB RAM. 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 instrumentation and industrial HMI panels.

For engineers reviewing the R5F10WMFAFB#10 datasheet, R5F10WMFAFB#10 pinout, R5F10WMFAFB#10 application, or R5F10WMFAFB#10 equivalent, this page provides verified technical context, validated pin functions, real-world use cases for LCD-driven embedded systems, and confirmed alternative parts with documented functional trade-offs.

Technical Context

The R5F10WMFAFB#10 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 1 MB address space. It supports multiple clock sources: high-speed on-chip oscillator (1–24 MHz ±1.0%), external crystal (X1/X2 up to 20 MHz), and subsystem clock (32.768 kHz XT1/EXCLKS).

Its peripheral set includes a 12-channel 8/10-bit ADC, dual comparators with selectable internal/external references, 8-channel 16-bit timer array (TAU) with PWM and remote control output, RTC2 with calendar and alarm, and three serial interfaces - UART0/1/3, CSI0/1, and IICA0/1 - all configurable via PIOR register remapping.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, industrial-grade (−40°C to +105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMFAFB#10, the R5F10WMEAFA#30 offers reduced footprint and cost but sacrifices 48 KB flash, 4 KB RAM, and 3 LCD segments; the R5F10WMGAFB#10 retains full compatibility while adding 32 KB flash and 2 KB RAM for scalable firmware architecture.

Availability

R5F10WMFAFB#10 is available at Aetrix Electronics and suitable for smart energy meters, industrial HMI panels, portable medical devices, and home appliance controls requiring stable component supply across extended product lifecycles.

Supply support for R5F10WMFAFB#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-integrated embedded applications - designed specifically for battery-operated instrumentation, industrial HMIs, and consumer appliances where display integration and energy efficiency are critical.

FAQ

What is the maximum operating frequency and corresponding power consumption of the R5F10WMFAFB#10?

The R5F10WMFAFB#10 achieves 31 DMIPS at 24 MHz using its high-speed on-chip oscillator. At this frequency, active current is 71 μA/MHz (≈1.7 mA total), measured at VDD = 3.0 V and TA = 25°C. The device supports dynamic clock scaling down to 32.768 kHz for sub-μA RTC+LVD operation.

Does the R5F10WMFAFB#10 support hardware-based LCD bias generation without external components?

Yes, the R5F10WMFAFB#10 integrates full LCD bias circuitry supporting three methods: internal voltage boosting (no external capacitors required), capacitor split (two external caps), and external resistor division. This eliminates need for discrete LCD bias ICs in most designs.

How many UART interfaces does the R5F10WMFAFB#10 provide, and which support LIN physical layer?

The R5F10WMFAFB#10 provides three UART interfaces: UART0, UART1, and UART3. Only UART0 and UART1 include LINSEL functionality for direct LIN bus compliance (SAE J2602). UART3 is a standard asynchronous interface without LIN support.

Can the R5F10WMFAFB#10 perform ADC conversions while executing code from flash memory?

Yes, the R5F10WMFAFB#10 supports concurrent ADC operation and program execution. Its 12-channel 8/10-bit ADC operates independently of CPU activity, with conversion results stored in dedicated registers accessible via DMA or polling - no CPU stall required.

What is the purpose of the PIOR register in the R5F10WMFAFB#10, and how many functions can it remap?

The Peripheral I/O Redirection (PIOR) register enables hardware-level remapping of 22+ peripheral functions (e.g., UART, CSI, IICA, TAU outputs) to alternate pins. This allows flexible PCB routing and resolves pin conflicts without changing firmware logic - critical for dense 80-pin layouts.