Renesas R5F10WMCAFB#50

Overview

R5F10WMCAFB#50 from Renesas is an 80-pin RL78/L13 16-bit microcontroller with integrated LCD controller/driver, 64 KB flash, 4 KB data flash, 4 KB RAM, and true low-power operation (71 μA/MHz active, 0.61 μA in RTC+LVD mode). It supports 1.6–5.5 V supply, operates from –40°C to +85°C, and targets battery-powered LCD-based instrumentation and consumer HMI devices.

For engineers reviewing the R5F10WMCAFB#50 datasheet, R5F10WMCAFB#50 pinout, R5F10WMCAFB#50 application, or R5F10WMCAFB#50 equivalent, key selection criteria include its 51-segment/8-common LCD drive capability, dual UART + I²C + CSI interfaces, 12-channel 8/10-bit ADC, and ultra-low-power STOP/HALT/SNOOZE modes for energy-constrained designs.

Technical Context

The R5F10WMCAFB#50 implements the RL78 CPU core-a CISC architecture with 3-stage pipeline, 1 MB address space, and configurable instruction timing (0.04167 µs min @ 24 MHz). It integrates a dedicated 16-bit timer KB20 for PWM output and a real-time clock 2 with calendar, alarm, and correction functions.

Its peripheral set includes a 4-channel DMA controller, multiplier/divider unit (16×16→32, 32÷32→32), two comparators with selectable internal/external references, and flexible LCD driver supporting voltage boosting, capacitor split, or resistor division methods-enabling direct drive of segmented displays without external bias circuitry.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMDAFB#50, the R5F10WMCAFB#50 offers double the flash and >2× RAM for enhanced feature sets without changing PCB layout; versus R5F10WMGAFB#50, it provides optimal cost/performance balance for mid-tier LCD applications requiring robust firmware but not full GUI complexity.

Availability

R5F10WMCAFB#50 is available at Aetrix Electronics and suitable for smart energy meters, home appliance control panels, and portable medical devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F10WMCAFB#50 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 markets.

The RL78/L13 product line is designed specifically for ultra-low-power LCD-based human-machine interface applications, integrating display driving, sensing, and communication in a single chip to minimize system-level BOM and power consumption.

FAQ

What is the maximum operating frequency of the R5F10WMCAFB#50?

The R5F10WMCAFB#50 supports a maximum high-speed on-chip oscillator frequency of 24 MHz (±1.0% accuracy) and a maximum external crystal frequency of 20 MHz in HS mode. Its minimum instruction execution time is 0.04167 µs at 24 MHz, delivering 31 DMIPS performance. The device also supports lower-frequency modes (e.g., 32.768 kHz subsystem clock) for ultra-low-power RTC operation.

Does the R5F10WMCAFB#50 support hardware-based LCD bias generation?

Yes, the R5F10WMCAFB#50 integrates configurable LCD bias generation using internal voltage boosting, capacitor split, or external resistor division methods. This eliminates the need for external bias ICs and allows direct drive of up to 51 segments × 4 commons (or 47 × 8) with software-selectable bias schemes optimized for display contrast and power efficiency.

How many UART interfaces does the R5F10WMCAFB#50 provide, and which support LIN?

The R5F10WMCAFB#50 provides three UART interfaces: UART0, UART1, and UART2. UART1 is explicitly LIN-bus compliant per ISO 14229 and ISO 17987 standards, supporting automatic sync-break detection, checksum calculation, and LIN slave node functionality - enabling direct integration into automotive body electronics and industrial control networks.

What is the data flash endurance specification for the R5F10WMCAFB#50?

The R5F10WMCAFB#50 features 4 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) across the full VDD range of 1.8–5.5 V. Background operation (BGO) allows program memory execution during data flash rewriting, ensuring uninterrupted real-time operation in applications such as parameter storage, calibration data logging, and firmware update staging.

Can the R5F10WMCAFB#50 operate from a single 1.8 V supply?

Yes, the R5F10WMCAFB#50 operates across a wide supply range of 1.6 V to 5.5 V, fully supporting 1.8 V operation in LV (low-voltage main) mode at up to 4 MHz. This enables compatibility with LiFePO₄, NiMH, and single-cell lithium batteries without external regulators - critical for compact, battery-only portable LCD devices.