My Inquiry
My Account
Renesas R5F10WMFAFB#50
- Part No.:
- R5F10WMFAFB#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R5F10WMFAFB#50.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
R5F10WMFAFB#50 from Renesas is an 80-pin RL78/L13 16-bit microcontroller with integrated LCD controller/driver, 96 KB flash, 4 KB data flash, 6 KB RAM, and ultra-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 consumer devices such as smart meters, thermostats, and portable medical displays.
For engineers reviewing the R5F10WMFAFB#50 datasheet, R5F10WMFAFB#50 pinout, R5F10WMFAFB#50 application, or R5F10WMFAFB#50 equivalent, this page delivers verified technical context, exact pin functions for LFQFP-80 package, real-world LCD interface design values, and validated alternative MCUs for migration or second sourcing.
Technical Context
The R5F10WMFAFB#50 implements the RL78 CPU core-a CISC architecture with 3-stage pipeline-delivering 31 DMIPS at 24 MHz while supporting configurable instruction execution times from 0.04167 µs (24 MHz on-chip oscillator) to 30.5 µs (32.768 kHz subsystem clock). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.
It integrates a dedicated LCD controller/driver supporting up to 51 segment × 8 common outputs via switchable voltage-boosting, capacitor-split, or external-resistor division methods; paired with dual comparators, 12-channel 8/10-bit ADC, and three UART channels (one LIN-capable), it enables self-contained HMI control without external display drivers or signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 31 DMIPS @ 24 MHz |
| Flash / Data Flash / RAM | 96 KB code flash (1 KB blocks), 4 KB data flash (1M write cycles), 6 KB on-chip RAM |
| Supply & Temp Range | 1.6–5.5 V operation; –40°C to +85°C ambient (Consumer grade A) |
| Power Modes | HALT (71 μA/MHz), STOP (0.61 μA w/ RTC+LVD), SNOOZE (low-power background data flash rewrite) |
| LCD Driver | 51 segment × 4/8 common outputs; internal boost, capacitor-split, or resistor-divider bias options |
| Peripherals | 12-channel 8/10-bit ADC, 2 comparators, 8× 16-bit TAU timers, 1× 16-bit KB20 timer, 3× UART (1 LIN), 1× I²C, 2× CSI, 4× DMA channels |
| Clock Sources | High-speed on-chip oscillator (1–24 MHz, ±1.0%), 32.768 kHz crystal input, 15 kHz low-speed on-chip oscillator |
Pinout & Package
Package: 80-pin LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | SO00/TxD0/SEG43 | Primary serial output or UART transmit; also drives LCD segment 43 - shared function requires PIOR configuration |
| P17 | SI00/RxD0/SDA00/SEG42 | Tri-functional I/O: SPI input, UART receive, I²C data line, or LCD segment 42 - enables flexible peripheral routing |
| P60 / P61 | SCLA0 / SDAA0 | Dedicated I²C clock/data pins with built-in pull-up capability - no external resistors needed for standard bus operation |
| P31 | RTC1HZ / INTP3 / SEG21 | Real-time clock 1 Hz output with interrupt capability and LCD segment drive - synchronizes UI updates to calendar time |
| P74–P77 | TKBO00 / TKBO01-0..2 / KR4..KR7 | Four-key return inputs with remote carrier output support - enables IR remote decoding and keypad scanning in same port group |
| VL1–VL4 | LCD Power Supply Outputs | Four independent LCD bias voltage rails - configurable for segment/common drive strength and contrast tuning |
| REGC | Voltage Regulator Capacitor Terminal | Must connect 0.47–1 μF capacitor to VSS - stabilizes internal LDO for reliable LCD voltage generation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| True Low-Power Platform | 71 μA/MHz active current enables >5-year battery life in coin-cell-powered LCD devices |
| Integrated LCD Controller/Driver | Drives up to 408 segments (51×8) without external driver IC - reduces BOM count and PCB area by ≥30% |
| Background Data Flash Rewrite | BGO mode allows full CPU execution during 4 KB data flash programming - eliminates UI freeze during firmware logging |
| Flexible Clock System | On-chip oscillator accuracy ±1.0% over 1.8–5.5 V and –20 to +85°C - eliminates need for external crystal in cost-sensitive designs |
| Hardware Key Interrupt | 8-key return inputs with debounce and wake-from-STOP capability - enables instant UI response with zero CPU overhead |
Applications
| Smart Energy Meter | Programmable Thermostat |
|---|---|
Use Scenario: Residential electricity meter with segmented LCD display, tamper detection, and RS-485 communication. IC Role / Device Role / Timing Role: Primary system controller managing LCD refresh, pulse counting, UART-based DLMS protocol stack, and RTC-corrected billing intervals. Use Value: Integrated 12-channel ADC measures voltage/current directly; 96 KB flash hosts secure firmware + tariff tables; STOP-mode current <1 μA extends battery backup to 10 years. |
Use Scenario: Wi-Fi-connected HVAC controller with 4-line character LCD, temperature/humidity sensing, and user button interface. IC Role / Device Role / Timing Role: HMI processor handling LCD rendering, capacitive key scan, sensor polling, and local logic - offloads host MCU. Use Value: On-chip comparators detect button press thresholds; SNOOZE mode rewrites calibration data during sleep; 8-key interrupt supports multi-function menu navigation. |
| Portable Blood Glucose Monitor | Industrial Panel Indicator |
Use Scenario: CE-certified handheld glucose meter with electrochemical sensor interface, LCD readout, and USB charging status indicator. IC Role / Device Role / Timing Role: Sensor signal conditioner, display driver, and safety monitor - performs ADC conversion, LCD update, and LVD-triggered shutdown. Use Value: Internal 1.45 V reference ensures precise glucose ADC accuracy; 0.61 μA STOP mode preserves battery during idle; integrated buzzer output alerts test completion. |
Use Scenario: DIN-rail mounted machine status panel with 3-digit numeric LCD, relay control, and Modbus RTU communication. IC Role / Device Role / Timing Role: Standalone display and I/O manager - receives Modbus commands, updates LCD digits, and drives discrete outputs. Use Value: 3× UARTs support simultaneous Modbus RTU, debug console, and auxiliary serial interface; 51-segment LCD renders custom icons and numeric values without external graphics controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F10WMEAFA#50 | 64-pin LQFP-64, 48 KB flash, 2 KB RAM, 9-channel ADC, 36-segment LCD drive | Lower pin count and memory - suitable for simpler LCD interfaces with ≤2 lines and basic sensor I/O | Select when board space is constrained and display complexity is reduced; requires PCB redesign due to different footprint. |
| R5F10WMGAFA#50 | 80-pin LQFP-80, 128 KB flash, 8 KB RAM, identical peripherals and LCD capability | Higher memory headroom for field-upgradable firmware, larger data buffers, or expanded feature sets | Choose for future-proofing or applications requiring >96 KB code space - pin-compatible and drop-in software upgrade path. |
Compared with R5F10WMEAFA#50, the R5F10WMFAFB#50 provides 48 KB more flash, 4 KB more RAM, and 15 additional LCD segments - enabling richer UIs and local data logging. Against R5F10WMGAFA#50, it trades 32 KB flash for lower unit cost and identical functionality in most deployed firmware images.
Availability
R5F10WMFAFB#50 is available at Aetrix Electronics and suitable for smart energy meters, programmable thermostats, and portable medical devices requiring stable component supply, long-lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for R5F10WMFAFB#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 delivers ultra-low-power 16-bit MCUs optimized for LCD-based human-machine interfaces in battery-operated consumer and industrial equipment - emphasizing integration, energy efficiency, and ease of certification.
FAQ
What is the maximum LCD segment count supported by the R5F10WMFAFB#50?
The R5F10WMFAFB#50 supports up to 51 segment outputs and 8 common outputs, enabling 408-segment (51×8) LCD drive configurations. This is confirmed in the datasheet's "Outline of Functions" section for 80-pin devices and applies specifically to the R5F10WMFAFB#50 variant. The actual usable segments depend on selected bias method and COM count setting.
Does the R5F10WMFAFB#50 include hardware support for LIN bus communication?
Yes, the R5F10WMFAFB#50 includes one UART channel with LIN-bus support, as explicitly stated in the "Serial interface" feature list on page 1 of the datasheet. This UART (designated UART2 in the block diagram) meets ISO 17987-4 physical layer requirements and supports automatic sync-break detection and checksum generation required for LIN 2.x compliance.
What is the guaranteed operating voltage range for the R5F10WMFAFB#50 at full speed?
The R5F10WMFAFB#50 operates from 1.6 V to 5.5 V across its full temperature range (–40°C to +85°C). At maximum 24 MHz operation using the high-speed on-chip oscillator, the minimum valid supply is 2.7 V per the electrical specifications table (page 17), ensuring stable timing and flash access integrity under all specified conditions.
Can the R5F10WMFAFB#50 perform data flash writes while executing code from main flash?
Yes, the R5F10WMFAFB#50 supports Background Operation (BGO) for data flash. During BGO, the CPU can execute instructions from program memory while simultaneously rewriting the 4 KB data flash - a capability confirmed in the "Data flash memory" feature list and enabled via the FLMCR register settings described in Chapter 12 of the User's Manual.
Is the R5F10WMFAFB#50 pin-compatible with other RL78/L13 80-pin variants?
Yes, all RL78/L13 80-pin variants - including R5F10WMAAFB#50 through R5F10WMGAFB#50 - share identical pinouts and package dimensions (LFQFP-80, 0.5 mm pitch). This allows direct substitution within the same memory/temperature grade family without PCB changes, provided peripheral register initialization accounts for differing flash/RAM sizes.
R5F10WMFAFB#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- RL78/L13
- Packaging:
- Tape & Reel (TR)
- 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:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 6K 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:
R5F10WMFAFB#50 FAQ
1.How can I place an order for R5F10WMFAFB#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F10WMFAFB#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 R5F10WMFAFB#50 reliable?
The price and inventory of R5F10WMFAFB#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F10WMFAFB#50 is usually 5 days.
3.What payment methods are accepted for R5F10WMFAFB#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F10WMFAFB#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F10WMFAFB#50?
R5F10WMFAFB#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F10WMFAFB#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 R5F10WMFAFB#50?
For technical support, including R5F10WMFAFB#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F10WMFAFB#50 requirements.
6.How does Aetrix verify that R5F10WMFAFB#50 is sourced from the original manufacturer or authorized distributors?
All R5F10WMFAFB#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 R5F10WMFAFB#50 meets industry standards.
7.What is the process for return or replacement of R5F10WMFAFB#50?
All R5F10WMFAFB#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F10WMFAFB#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 R5F10WMFAFB#50 part is unused and in its original packaging.
Return procedure for R5F10WMFAFB#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R5F10WMFAFB#50 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
