Renesas R5F10WMCAFA#50

Overview

R5F10WMCAFA#50 from Renesas is an 80-pin LQFP (14 × 14 mm, 0.65 mm pitch) 16-bit RL78/L13 microcontroller with integrated LCD controller/driver, 32 KB flash memory, 4 KB data flash, and 1.5 KB RAM. It operates from 1.6 V to 5.5 V, delivers 31 DMIPS at 24 MHz, and supports ultra-low-power modes (71 μA/MHz active, 0.61 μA RTC+LVD). It targets battery-powered LCD-based consumer devices such as smart meters, thermostats, and portable medical displays.

For engineers reviewing the R5F10WMCAFA#50 datasheet, R5F10WMCAFA#50 pinout, R5F10WMCAFA#50 application, or R5F10WMCAFA#50 equivalent, key selection criteria include its 51-segment/8-common LCD drive capability, 12-channel 8/10-bit ADC, dual comparators with internal reference, 3 UART channels (including LIN), and hardware RTC with calendar and alarm - all in a single-chip solution for cost-sensitive, low-power HMI systems.

Technical Context

The R5F10WMCAFA#50 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.04167 µs (24 MHz on-chip oscillator) to 30.5 µs (32.768 kHz subsystem clock). Its memory subsystem includes 32 KB code flash (1 KB block size), 4 KB data flash with background operation (BGO) and 1M write endurance, and 1.5 KB on-chip RAM.

Peripherals are tightly integrated for LCD-centric applications: the LCD controller supports switchable voltage-boosting, capacitor-split, or external-resistor division methods; the 12-channel ADC includes internal 1.45 V reference and temperature sensor; and the 8-channel timer array provides PWM, input capture, and remote control output (REMOOUT) functions - all synchronized to a flexible clock system with high-speed on-chip oscillator (±1.0% accuracy).

Key Specifications

Pinout & Package

Package: 80-pin plastic LQFP (14 × 14 mm, 0.65 mm pitch), JEDEC standard PLQP0080JB-E footprint. Requires 0.47–1 μF capacitor between REGC and VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10WMCAFA#50, R5F10WMDAFA#50 offers scalable code storage for feature-rich firmware, while R5F10WLCAFA#50 reduces board area and BOM cost for compact, lower-I/O LCD applications - both retain identical low-power performance and peripheral compatibility.

Availability

R5F10WMCAFA#50 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 R5F10WMCAFA#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L13 product line is engineered for ultra-low-power LCD-based human-machine interfaces, integrating true low-power operation, comprehensive LCD drive capability, and robust peripheral sets for cost-sensitive consumer and industrial displays.

FAQ

What is the maximum LCD segment count supported by the R5F10WMCAFA#50?

The R5F10WMCAFA#50 supports up to 51 segment outputs and 8 common outputs when configured for 8-com operation, enabling direct drive of alphanumeric or custom segment displays without external drivers. This matches the 80-pin variant's full LCD capability as specified in the RL78/L13 datasheet Section 1.6.

Does the R5F10WMCAFA#50 include a hardware real-time clock with calendar function?

Yes, the R5F10WMCAFA#50 integrates Real-Time Clock 2 (RTC2) with full calendar support for 99 years, alarm interrupt, and clock correction - all operational in STOP mode with only 0.61 μA current draw. The RTC1HZ pin provides a precise 1 Hz output for UI timing or low-power wake-up events.

What are the key low-power modes available on the R5F10WMCAFA#50?

The R5F10WMCAFA#50 offers HALT, STOP, and SNOOZE modes. STOP mode draws just 0.61 μA with RTC + LVD active; HALT mode consumes 71 μA/MHz during active execution; SNOOZE enables selective peripheral operation (e.g., ADC conversion) while CPU remains halted - all configurable via system control registers.

Can the R5F10WMCAFA#50 perform background data flash writes while executing code from main flash?

Yes, the R5F10WMCAFA#50 supports Background Operation (BGO) for data flash, allowing program execution from code flash memory during data flash erase/write sequences. Data flash endurance is rated at 1,000,000 write cycles, and rewrites are supported across the full VDD range (1.8–5.5 V).

What UART interfaces does the R5F10WMCAFA#50 provide, and which support LIN bus?

The R5F10WMCAFA#50 includes three UART channels: UART0, UART1, and UART2. UART2 is explicitly LIN-bus compliant per the datasheet, supporting LIN 2.2A protocol with automatic sync-break detection and checksum generation - enabling direct connection to automotive body-control networks without external transceivers.