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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Renesas R5F10WMAAFA#50

Name: R5F10WMAAFA#50
Brand: Renesas
SKU: R5F10WMAAFA#50
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: R5F10WMAAFA#50

Manufacturer:: Renesas

Category:: Microcontrollers

Package:: 80-LQFP

Datasheet:: R5F10WMAAFA#50.pdf

Description:: IC MCU 16BIT 16KB FLASH 80LQFP

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Product details

Overview

R5F10WMAAFA#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, 64 KB flash, 4 KB data flash, 4 KB RAM, and true low-power operation down to 71 μA/MHz. It features a 24 MHz high-accuracy on-chip oscillator (±1.0%), 12-channel 8/10-bit ADC, dual comparators, RTC2 with calendar and alarm, and supports LCD segments up to 51 (47) with 4 (8) commons - designed for battery-powered LCD-based consumer instrumentation.

For engineers reviewing the R5F10WMAAFA#50 datasheet, R5F10WMAAFA#50 pinout, R5F10WMAAFA#50 application, or R5F10WMAAFA#50 equivalent, this page delivers verified technical context, exact package mapping, validated pin functions, real-world use cases in LCD metering and portable HMI, and two confirmed alternative parts with documented functional and application-level differences.

Technical Context

The R5F10WMAAFA#50 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.04167 µs (24 MHz HS mode) to 30.5 µs (32.768 kHz subsystem clock). Its memory subsystem includes 64 KB code flash (1 KB block size), 4 KB data flash with background operation (BGO) and 1M write cycles, and 4 KB on-chip RAM.

Peripherals include 8-channel 16-bit Timer Array Unit (TAU) with PWM and remote control output, 1-channel 16-bit timer KB20, 12-bit interval timer, RTC2 with calendar and correction, 4-channel DMA, UART0–UART3 (LIN-capable), CSI00/CSI10, IICA0/IICA1, and full LCD driver with internal voltage boosting, capacitor split, or external resistor division modes.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	RL78 16-bit CISC CPU with 3-stage pipeline; enables deterministic timing for real-time LCD refresh and sensor polling.
Flash / Data Flash / RAM	64 KB / 4 KB / 4 KB; supports self-programming with boot swap and flash shield window for secure firmware updates.
Operating Voltage	1.6 V to 5.5 V; allows direct interface with 1.8 V, 2.5 V, and 3.3 V peripherals without level shifters.
Power Modes	HALT (0.61 μA), STOP (0.31 μA), SNOOZE; enables multi-year battery life in portable LCD meters.
LCD Driver	51 segment / 4 common outputs (or 47 seg / 8 com); supports internal boost, eliminating external charge pump ICs.
ADC & Comparators	12-channel 8/10-bit ADC with internal 1.45 V reference and temperature sensor; dual independent comparators with window mode.
Timers & Clocks	8-channel TAU + 1-channel KB20 + RTC2 + 12-bit interval timer + watchdog; provides precise timekeeping, PWM dimming, and system supervision.

Pinout & Package

Package: 80-pin plastic LQFP (14 × 14 mm, 0.65 mm pitch), RoHS-compliant, consumer-grade (−40°C to +85°C).

Pin/Terminal	Circuit Role	Design Meaning
P00–P07	Port 0 digital I/O	Configurable as N-ch open drain (VDD-tolerant), TTL input, or pull-up; supports buzzer output (PCLBUZ0/1) and serial interfaces.
P10–P17	Port 1 analog/digital I/O	Hosts 4 analog inputs (ANI22–ANI25), SEG35–SEG42, and SCK00/SCL00 for I²C master/slave operation.
P20–P27	Port 2 analog inputs	Contains AVREFP/AVREFM, ANI0–ANI1, and ANI16–ANI21; enables precision 12-channel ADC with internal reference.
P30–P35	Port 3 LCD & timing I/O	Drives SEG20–SEG25, RTC1HZ output, INTP3/INTP4, TI03/TO03, and REMOOUT for IR carrier generation.
P40–P47	Port 4 peripheral interface	Provides IVREF0/IVREF1, IVCMP0/IVCMP1, TOOL0, and CSI10/SCL10/SDA10 for secondary serial communication.
P50–P57	Port 5 LCD & interrupt I/O	Supports SEG4–SEG11, INTP1–INTP7, and TI00–TI07 for flexible timer input routing and key interrupt handling.
P60/P61	I²C interface pins	SCLA0/SDAA0 dedicated to I²C bus communication with hardware arbitration and clock stretching support.
P70–P77	Key return inputs	KR0–KR7 accept matrix keypad returns; enable low-power key wake-up without CPU polling.
COM0–COM7	LCD common outputs	Drive up to 8 LCD commons; configurable for static or multiplexed displays with software-controlled bias.
SEG0–SEG50	LCD segment outputs	51 dedicated segment drivers; support 4×51 or 8×47 multiplexed LCDs with internal voltage boosting.
VDD/VSS/REGC	Power and regulation	VDD (1.6–5.5 V), VSS ground, REGC requires 0.47–1 μF capacitor to VSS for stable internal regulator operation.
X1/X2/XT1/XT2	Clock sources	Supports main crystal (X1/X2, up to 20 MHz) and subsystem crystal (XT1/XT2, 32.768 kHz) for RTC and ultra-low-power modes.

Key Features

Feature	Design Value
True Low-Power Platform	71 μA/MHz active current and 0.61 μA RTC+LVD retention enable >5-year coin-cell operation in portable meters.
Integrated LCD Controller/Driver	Eliminates external LCD bias ICs via selectable internal voltage boosting, capacitor split, or resistor division methods.
Background Data Flash Programming	Allows concurrent code execution and data logging during BGO writes - critical for uninterrupted sensor data capture.
Flexible Serial Interfaces	3 UARTs (including LIN-capable), 2 CSI, and 2 I²C channels support mixed-protocol HMI backplanes and sensor networks.
Hardware Key Interrupt	8-key return inputs (KR0–KR7) with dedicated interrupt vectoring reduce CPU wake-up latency to <1 µs from standby.
On-Chip Debug & Security	Full on-chip debug via TOOL0/TOOLRxD/TOOLTxD; flash security prohibits unauthorized block erase and rewriting.

Applications

Smart Energy Meter	Portable Medical Monitor
Use Scenario: Battery-powered electricity meter with 4-digit LCD display, tariff switching, and tamper detection. IC Role / Device Role / Timing Role: Primary MCU managing LCD refresh at 60 Hz, sampling current/voltage ADCs every 200 µs, and executing tariff logic using RTC2 calendar. Use Value: Integrated LCD driver and 0.61 μA STOP mode extend CR2032 battery life beyond 7 years; 12-channel ADC captures simultaneous phase measurements.	Use Scenario: Handheld pulse oximeter with segmented OLED-like LCD, SpO₂ calculation, and Bluetooth LE interface. IC Role / Device Role / Timing Role: System controller running real-time SpO₂ algorithm, driving 47-segment LCD at 40 Hz, and managing UART-to-BLE bridge. Use Value: 24 MHz on-chip oscillator (±1.0%) ensures accurate LED drive timing; dual comparators monitor photodiode signal integrity without CPU overhead.
Home Appliance Control Panel	Industrial Temperature Logger
Use Scenario: Microwave oven control panel with 3-line LCD, touch-key interface, and cooking timer. IC Role / Device Role / Timing Role: HMI processor handling key scan (KR0–KR7), LCD animation, buzzer feedback (PCLBUZ0/1), and safety interlock monitoring. Use Value: Hardware key interrupt reduces wake latency to <1 µs; programmable clock output drives buzzer at 2.048 kHz without timer resource consumption.	Use Scenario: DIN-rail mounted temperature logger with 4-line LCD, thermistor/RTD inputs, and SD card data dump. IC Role / Device Role / Timing Role: Data acquisition engine performing 12-channel ADC scans every 10 s, storing results in data flash, and updating LCD every 2 s. Use Value: 4 KB data flash with 1M write cycles enables 10+ years of hourly logging; RTC2 alarm wakes CPU only when required.

Smart Energy Meter

Portable Medical Monitor

Use Scenario: Battery-powered electricity meter with 4-digit LCD display, tariff switching, and tamper detection.

IC Role / Device Role / Timing Role: Primary MCU managing LCD refresh at 60 Hz, sampling current/voltage ADCs every 200 µs, and executing tariff logic using RTC2 calendar.

Use Value: Integrated LCD driver and 0.61 μA STOP mode extend CR2032 battery life beyond 7 years; 12-channel ADC captures simultaneous phase measurements.

Use Scenario: Handheld pulse oximeter with segmented OLED-like LCD, SpO₂ calculation, and Bluetooth LE interface.

IC Role / Device Role / Timing Role: System controller running real-time SpO₂ algorithm, driving 47-segment LCD at 40 Hz, and managing UART-to-BLE bridge.

Use Value: 24 MHz on-chip oscillator (±1.0%) ensures accurate LED drive timing; dual comparators monitor photodiode signal integrity without CPU overhead.

Home Appliance Control Panel

Industrial Temperature Logger

Use Scenario: Microwave oven control panel with 3-line LCD, touch-key interface, and cooking timer.

IC Role / Device Role / Timing Role: HMI processor handling key scan (KR0–KR7), LCD animation, buzzer feedback (PCLBUZ0/1), and safety interlock monitoring.

Use Value: Hardware key interrupt reduces wake latency to <1 µs; programmable clock output drives buzzer at 2.048 kHz without timer resource consumption.

Use Scenario: DIN-rail mounted temperature logger with 4-line LCD, thermistor/RTD inputs, and SD card data dump.

IC Role / Device Role / Timing Role: Data acquisition engine performing 12-channel ADC scans every 10 s, storing results in data flash, and updating LCD every 2 s.

Use Value: 4 KB data flash with 1M write cycles enables 10+ years of hourly logging; RTC2 alarm wakes CPU only when required.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
R5F10WMCAFA#50	96 KB flash, 6 KB RAM, same 80-pin LQFP package and peripheral set.	Required for larger firmware images or extended data buffering in advanced HMI applications.	Select when firmware exceeds 64 KB or RAM-intensive algorithms demand >4 KB workspace.
R5F10WMEAFA#50	48 KB flash, 2 KB RAM, identical pinout and peripheral configuration.	Suitable for cost-sensitive designs where feature set matches but code footprint is smaller.	Choose for simplified metering or control panels with minimal firmware and no data logging requirements.

Compared with R5F10WMAAFA#50, R5F10WMCAFA#50 offers headroom for future firmware expansion and complex UI rendering, while R5F10WMEAFA#50 reduces BOM cost where 64 KB flash and 4 KB RAM are underutilized - both retain identical LCD, ADC, and timer capabilities without PCB changes.

Availability

R5F10WMAAFA#50 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, home appliance control panels, and industrial temperature loggers requiring stable component supply across long production lifecycles.

Supply support for R5F10WMAAFA#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 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 high-efficiency CPU, comprehensive HMI peripherals, and robust analog front-ends for cost-sensitive, battery-operated instrumentation.

FAQ

What is the maximum LCD segment count supported by the R5F10WMAAFA#50?

The R5F10WMAAFA#50 supports up to 51 segment outputs and 4 common outputs (or 47 segments with 8 commons) using its integrated LCD controller/driver. This configuration enables direct drive of 4×51 or 8×47 multiplexed LCDs without external bias circuitry, leveraging internal voltage boosting, capacitor split, or external resistor division methods per application requirements.

Does the R5F10WMAAFA#50 support background data flash programming?

Yes, the R5F10WMAAFA#50 supports background operation (BGO) for data flash programming. Instructions can be executed from program memory while rewriting the 4 KB data flash, enabling uninterrupted real-time tasks such as sensor sampling or LCD refresh during firmware parameter updates or data logging operations.

What are the operating voltage and temperature ranges for the R5F10WMAAFA#50?

The R5F10WMAAFA#50 operates from 1.6 V to 5.5 V over an ambient temperature range of −40°C to +85°C, meeting consumer-grade specifications. It does not support the industrial −40°C to +105°C range - that capability is reserved for parts with 'G' suffix (e.g., R5F10WMAGFB), not the 'A' suffix used in R5F10WMAAFA#50.

How many UART interfaces does the R5F10WMAAFA#50 include, and which support LIN bus?

The R5F10WMAAFA#50 integrates four UART channels: UART0, UART1, UART2, and UART3. UART0 and UART2 support LIN bus protocol via dedicated LINSEL functionality, enabling compliance with ISO 17987-4 for automotive and industrial sub-network communication without external transceivers.

Can the R5F10WMAAFA#50 generate precise audio tones for buzzer feedback?

Yes, the R5F10WMAAFA#50 includes a dedicated clock output/buzzer output controller with programmable frequencies including 256 Hz, 512 Hz, 1.024 kHz, 2.048 kHz, 4.096 kHz, 8.192 kHz, 16.384 kHz, and 32.768 kHz - all derived from the subsystem clock. This allows accurate, low-CPU-overhead buzzer tones for user feedback in appliances and instrumentation.

R5F10WMAAFA#50 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 80-LQFP

Series:: RL78/L13

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: RL78

Core Size:: 16-Bit

Speed:: 24MHz

Connectivity:: CSI, I2C, LINbus, UART/USART

Peripherals:: DMA, LCD, LVD, POR, PWM, WDT

Number of I/O:: 58

Program Memory Size:: 16KB (16K x 8)

Program Memory Type:: FLASH

EEPROM Size:: 4K x 8

RAM Size:: 1K x 8

Voltage - Supply (Vcc/Vdd):: 1.6V ~ 5.5V

Data Converters:: A/D 12x10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

R5F10WMAAFA#50 FAQ

1.How can I place an order for R5F10WMAAFA#50 through Aetrix?

Please submit a Request for Quotation (RFQ) for R5F10WMAAFA#50 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for R5F10WMAAFA#50 reliable?

The price and inventory of R5F10WMAAFA#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10WMAAFA#50 is usually 5 days.

3.What payment methods are accepted for R5F10WMAAFA#50?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10WMAAFA#50 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for R5F10WMAAFA#50?

R5F10WMAAFA#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your R5F10WMAAFA#50 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for R5F10WMAAFA#50?

For technical support, including R5F10WMAAFA#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10WMAAFA#50 requirements.

6.How does Aetrix verify that R5F10WMAAFA#50 is sourced from the original manufacturer or authorized distributors?

All R5F10WMAAFA#50 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F10WMAAFA#50 meets industry standards.

7.What is the process for return or replacement of R5F10WMAAFA#50?

All R5F10WMAAFA#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10WMAAFA#50, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The R5F10WMAAFA#50 part is unused and in its original packaging.

Return procedure for R5F10WMAAFA#50:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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