R5F10WMGAFB#50 - 128KB Flash 24MHz RL78/L13 MCU 80-LQFP | Renesas
MPN: R5F10WMGAFB#50 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.44 | $3.44 |
| 10 | $3.1 | $31.00 |
| 100 | $2.69 | $269.00 |
| 500 | $2.35 | $1,175.00 |
| 1,000 | $2.14 | $2,140.00 |
R5F10WMGAFB#50 Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, peripherals, and I/O. The RL78 is a 16-bit RISC architecture developed by Renesas that emphasizes ultra-low active and standby current consumption, making it well-suited for battery-powered and energy-harvesting products. The L13 sub-family adds a segment LCD controller/driver with three voltage-generation methods (external resistor divider, capacitive split, internal voltage boost), allowing direct connection to a wide range of segment LCD panels without external charge-pump circuitry.
Key features include 128KB flash (128K x 8), 8KB SRAM, 24MHz maximum CPU clock, an integrated segment LCD driver supporting up to many segments, multiple low-power modes (HALT, STOP, SNOOZE), and rich peripheral set including 10-bit ADC, timers, UART/SPI/I2C, real-time clock, and DMA. The 80-LQFP package provides ample I/O for keypad, sensor, and display expansion.
The RL78 core uses a Harvard-style architecture with a 3-stage pipeline and unified register bank, achieving high code density and 1.6 DMIPS/MHz class performance. Three LCD driving voltage generation methods support different panel sizes and power budgets, allowing designers to optimize for cost or efficiency.
Typical applications include home appliance LCD displays (washing machines, microwaves, induction cookers), measurement devices (digital multimeters, blood pressure monitors, smart meters), industrial control panels, and any battery-powered product that drives a character or segment LCD.
When designing with this MCU, ensure the LCD voltage generation method (external divider, capacitive split, or boost) is selected in software to match the panel and power budget. The 80-LQFP's exposed pad should be soldered to a sufficient ground pour for thermal and electrical stability.
This page synthesizes distributor pricing, RL78/L13 family drop-in alternatives, and practical low-power design notes not found in the manufacturer datasheet.
Drop-in alternatives for R5F10WMGAFB#50 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with R5F10WMGAFB#50 (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
R5F10WMGAFB#30
✅ Drop-In✓ In Stock
$2.33 / Unit
View Datasheet →R5F10WMGAFB#70
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
R5F10WLGAFB#50
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
R5F10WPGAFB#50
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F87J11-I/PT
✅ Drop-In✓ In Stock
$6.3 / Unit
View Datasheet →R5F10WMGAFB#50 Maximum Ratings & Electrical Characteristics
| Series | RL78/L13 |
| Core Processor | RL78 16-bit |
| Core Size | 16-Bit |
| Maximum CPU Clock | 24 MHz |
| Program Memory Size | 128 KB (128K x 8) FLASH |
| RAM Size | 8 KB |
| Package | 80-LQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C |
| Integrated LCD Driver | Yes (segment LCD, supports external divider / capacitive split / internal voltage boost) |
| ADC | 10-bit |
| Connectivity | CSI, I2C, UART, SPI |
| Peripherals | LCD, PWM, Real-Time Clock, DMA, Timers, Watchdog |
| RoHS Status | Compliant |
R5F10WMGAFB#50 Pin Configuration
| Pin 1 | P10/ANI0/SEG0/COM0 — Port 1 / ADC input / LCD segment 0 / LCD common 0 |
| Pin 2 | P11/ANI1/SEG1/COM1 — Port 1 / ADC input / LCD segment 1 / LCD common 1 |
| Pin 3 | P12/ANI2/SEG2/COM2 — Port 1 / ADC input / LCD segment 2 / LCD common 2 |
| Pin 4 | P13/ANI3/SEG3/COM3 — Port 1 / ADC input / LCD segment 3 / LCD common 3 |
| Pin 5 | P14/ANI4/SEG4/COM4 — Port 1 / ADC input / LCD segment 4 / LCD common 4 |
| Pin 6 | P15/ANI5/SEG5/COM5 — Port 1 / ADC input / LCD segment 5 / LCD common 5 |
| Pin 7 | P16/ANI6/SEG6/COM6 — Port 1 / ADC input / LCD segment 6 / LCD common 6 |
| Pin 8 | P17/ANI7/SEG7/COM7 — Port 1 / ADC input / LCD segment 7 / LCD common 7 |
| Pin 9 | VDD — Power supply |
| Pin 10 | VSS — Ground |
| Pin 11 | P30/SEG8/COM8 — Port 3 / LCD segment 8 / LCD common 8 |
| Pin 12 | P31/SEG9/COM9 — Port 3 / LCD segment 9 / LCD common 9 |
| Pin 13 | P32/SEG10/COM10 — Port 3 / LCD segment 10 / LCD common 10 |
| Pin 14 | P33/SEG11/COM11 — Port 3 / LCD segment 11 / LCD common 11 |
| Pin 15 | P34/SEG12/COM12 — Port 3 / LCD segment 12 / LCD common 12 |
| Pin 16 | P35/SEG13/COM13 — Port 3 / LCD segment 13 / LCD common 13 |
| Pin 17 | P36/SEG14/COM14 — Port 3 / LCD segment 14 / LCD common 14 |
| Pin 18 | P37/SEG15/COM15 — Port 3 / LCD segment 15 / LCD common 15 |
| Pin 19 | P40/SEG16/COM16 — Port 4 / LCD segment 16 / LCD common 16 |
| Pin 20 | P41/SEG17/COM17 — Port 4 / LCD segment 17 / LCD common 17 |
| Pin 21 | P42/SEG18/COM18 — Port 4 / LCD segment 18 / LCD common 18 |
| Pin 22 | P43/SEG19/COM19 — Port 4 / LCD segment 19 / LCD common 19 |
| Pin 23 | P44/SEG20/COM20 — Port 4 / LCD segment 20 / LCD common 20 |
| Pin 24 | P45/SEG21/COM21 — Port 4 / LCD segment 21 / LCD common 21 |
| Pin 25 | P46/SEG22/COM22 — Port 4 / LCD segment 22 / LCD common 22 |
| Pin 26 | P47/SEG23/COM23 — Port 4 / LCD segment 23 / LCD common 23 |
| Pin 27 | P50/SEG24/COM24 — Port 5 / LCD segment 24 / LCD common 24 |
| Pin 28 | P51/SEG25/COM25 — Port 5 / LCD segment 25 / LCD common 25 |
| Pin 29 | P52/SEG26/COM26 — Port 5 / LCD segment 26 / LCD common 26 |
| Pin 30 | P53/SEG27/COM27 — Port 5 / LCD segment 27 / LCD common 27 |
| Pin 31 | P54/SEG28/COM28 — Port 5 / LCD segment 28 / LCD common 28 |
| Pin 32 | P55/SEG29/COM29 — Port 5 / LCD segment 29 / LCD common 29 |
| Pin 33 | P56/SEG30/COM30 — Port 5 / LCD segment 30 / LCD common 30 |
| Pin 34 | P57/SEG31/COM31 — Port 5 / LCD segment 31 / LCD common 31 |
| Pin 35 | P60/SCLA0/SEG32 — Port 6 / I2C clock / LCD segment 32 |
| Pin 36 | P61/SDAA0/SEG33 — Port 6 / I2C data / LCD segment 33 |
| Pin 37 | P62/RXD0/SEG34 — Port 6 / UART RXD0 / LCD segment 34 |
| Pin 38 | P63/TXD0/SEG35 — Port 6 / UART TXD0 / LCD segment 35 |
| Pin 39 | P64/SEG36 — Port 6 / LCD segment 36 |
| Pin 40 | P65/SEG37 — Port 6 / LCD segment 37 |
| Pin 41 | P66/SEG38 — Port 6 / LCD segment 38 |
| Pin 42 | P67/SEG39 — Port 6 / LCD segment 39 |
| Pin 43 | VDD — Power supply |
| Pin 44 | VSS — Ground |
| Pin 45 | P70/SCLA1/KR0 — Port 7 / I2C clock / key return 0 |
| Pin 46 | P71/SDAA1/KR1 — Port 7 / I2C data / key return 1 |
| Pin 47 | P72/KR2 — Port 7 / key return 2 |
| Pin 48 | P73/KR3 — Port 7 / key return 3 |
| Pin 49 | P74/KR4 — Port 7 / key return 4 |
| Pin 50 | P75/KR5 — Port 7 / key return 5 |
| Pin 51 | P76/KR6 — Port 7 / key return 6 |
| Pin 52 | P77/KR7 — Port 7 / key return 7 |
| Pin 53 | P80/SEG40/COM0 — Port 8 / LCD segment 40 / LCD common 0 |
| Pin 54 | P81/SEG41/COM1 — Port 8 / LCD segment 41 / LCD common 1 |
| Pin 55 | P82/SEG42/COM2 — Port 8 / LCD segment 42 / LCD common 2 |
| Pin 56 | P83/SEG43/COM3 — Port 8 / LCD segment 43 / LCD common 3 |
| Pin 57 | P84/SEG44/COM4 — Port 8 / LCD segment 44 / LCD common 4 |
| Pin 58 | P85/SEG45/COM5 — Port 8 / LCD segment 45 / LCD common 5 |
| Pin 59 | P86/SEG46/COM6 — Port 8 / LCD segment 46 / LCD common 6 |
| Pin 60 | P87/SEG47/COM7 — Port 8 / LCD segment 47 / LCD common 7 |
| Pin 61 | P90/SEG48/COM8 — Port 9 / LCD segment 48 / LCD common 8 |
| Pin 62 | P91/SEG49/COM9 — Port 9 / LCD segment 49 / LCD common 9 |
| Pin 63 | P92/SEG50/COM10 — Port 9 / LCD segment 50 / LCD common 10 |
| Pin 64 | P93/SEG51/COM11 — Port 9 / LCD segment 51 / LCD common 11 |
| Pin 65 | P94/SEG52/COM12 — Port 9 / LCD segment 52 / LCD common 12 |
| Pin 66 | P95/SEG53/COM13 — Port 9 / LCD segment 53 / LCD common 13 |
| Pin 67 | P96/SEG54/COM14 — Port 9 / LCD segment 54 / LCD common 14 |
| Pin 68 | P97/SEG55/COM15 — Port 9 / LCD segment 55 / LCD common 15 |
| Pin 69 | PA0/SEG56 — Port A / LCD segment 56 |
| Pin 70 | PA1/SEG57 — Port A / LCD segment 57 |
| Pin 71 | PA2/SEG58 — Port A / LCD segment 58 |
| Pin 72 | PA3/SEG59 — Port A / LCD segment 59 |
| Pin 73 | RESET — Reset input (active low) |
| Pin 74 | TEST — Test pin (connect to VSS in user mode) |
| Pin 75 | X1 — Crystal oscillator input |
| Pin 76 | X2 — Crystal oscillator output |
| Pin 77 | EXCLK — External clock input |
| Pin 78 | VDD — Power supply |
| Pin 79 | VSS — Ground |
| Pin 80 | EPAD — Exposed thermal pad (connect to ground) |
Typical Applications
R5F10WMGAFB#50 is suitable for 6 applications: Home Appliance LCD Display (Washing Machines, Microwaves), Smart Electricity / Water / Gas Meters, Medical Measurement Devices (Blood Pressure Monitors, Thermometers), Industrial Control Panels and HMI, Remote Controls and Wireless Sensor End Nodes, Battery-Powered Measurement Instruments (DMMs, Environmental Sensors).
Home Appliance LCD Display (Washing Machines, Microwaves)
The R5F10WMGAFB#50's integrated segment LCD driver with three voltage-generation methods and ultra-low standby current make it ideal for the user-interface panels of washing machines, microwave ovens, and induction cookers. The MCU's 128KB flash and 24MHz RL78 core are sufficient to drive a 4x40 segment display, scan a keypad matrix, and manage relay/triac control loops while remaining within tight EMC and energy budgets. Designers select the capacitive-split LCD mode for medium-size panels to minimize external component count and achieve typical standby current below 5 uA, meeting IEC 62301 household-appliance standby limits.
Recommended
Smart Electricity / Water / Gas Meters
For smart metering, the R5F10WMGAFB#50 drives the segment LCD readout, samples pulse inputs from metering ICs, manages battery-backed RTC operation, and handles wireless M-Bus or RF communication to the concentrator. The RL78's SNOOZE mode allows ADC sampling and UART reception without full CPU wakeup, achieving years of battery life on a single lithium cell. The internal voltage-boost LCD mode enables the segment display to operate directly from a 3V battery without external charge pumps, reducing BOM cost. The MCU's 80-LQFP provides sufficient GPIO for keypad, tamper switch, and optical communication.
Recommended
Medical Measurement Devices (Blood Pressure Monitors, Thermometers)
In battery-powered medical devices, the R5F10WMGAFB#50 provides precise sensor signal conditioning via 10-bit ADC, drives the segment LCD with low operating noise, and runs the pump/valve control loop for cuff inflation. The RL78's low active current (typ. < 5 mA at 24MHz) and sub-uA STOP-mode standby allow months of battery life per set of alkaline cells. The integrated segment LCD driver eliminates the need for a separate LCD chip, reducing PCB area and BOM. Designers should verify IEC 60601-1 medical safety isolation requirements at the system level when the MCU directly drives user-accessible electrodes.
Recommended
Industrial Control Panels and HMI
The R5F10WMGAFB#50 drives segment-LCD HMI panels in industrial controllers, PLC expansion modules, and inverter status displays. Its 24MHz RL78 core handles Modbus RTU communication over UART, scans digital inputs at 1 kHz, and refreshes a 4x40 or 6x40 segment display via the integrated LCD controller. The -40C to +85C operating range covers most industrial cabinet environments, while the 80-LQFP package allows up to 70+ GPIO for push-button inputs, LED indicators, and encoder feedback. The internal voltage-boost LCD mode simplifies panel design at low bus voltages (24V industrial rails bucked to 3.3V locally).
Recommended
Remote Controls and Wireless Sensor End Nodes
For RF remote controls and IoT sensor end nodes, the R5F10WMGAFB#50 handles button scanning, sub-GHz RF protocol timing, and segment-LCD status display in a single chip. The RL78's STOP mode draws <1 uA, so a coin-cell-powered remote can last multiple years. The integrated segment LCD driver displays battery status, channel, and settings without an external LCD chip. Designers pair the MCU with an SPI-controlled sub-GHz transceiver for proprietary or Wireless M-Bus links. The 80-LQFP package is suitable for larger remotes with full keypads and displays.
Recommended
Battery-Powered Measurement Instruments (DMMs, Environmental Sensors)
Digital multimeters, clamp meters, and environmental monitors benefit from the R5F10WMGAFB#50's low-power operation, integrated segment LCD, and 10-bit ADC for sensor readout. The MCU drives a 4x40 or larger segment display showing voltage, current, temperature, and humidity readings; runs autoranging and peak-detection algorithms in firmware; and maintains calibrated accuracy over the -40C to +85C range. The internal voltage-boost LCD mode enables operation from a single 1.5V AA cell via boost converter, eliminating the need for a separate display driver. Designers should add input protection (TVS, PTC) at the measurement terminals per IEC 61010.
Recommended
Recommended Products Summary
Engineering reference data for R5F10WMGAFB#50 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | R5F10WMGAFB#30 | R5F10WMGAFB#70 | R5F10WLGAFB#50 | PIC18F87J11-I/PT |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Microchip Technology |
| Package | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) |
| Core / Architecture | RL78 16-bit | RL78 16-bit | RL78 16-bit | RL78 16-bit | PIC18 8-bit (functional alternative, pinout differs) |
| Maximum CPU Clock | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 48 MHz (PIC18) |
| Integrated Segment LCD Driver | Yes (3 voltage methods) | Yes (3 voltage methods) | Yes (3 voltage methods) | Yes (3 voltage methods) | No integrated LCD (functional alternative, pinout differs) |
Key Differentiators
- Three selectable LCD driving voltage generation methods (vs PIC18F87J11-I/PT)
- Lower active and standby power consumption (vs PIC18F87J11-I/PT)
- Pin-compatible family of variants for design flexibility (vs PIC18F87J11-I/PT)
Design Notes
Estimated: At VDD=3.3V and CPU active at 24MHz, the RL78/L13 core draws approximately 5 mA (typ.). To minimize current, set the system clock divider to the lowest frequency that meets display refresh and task deadlines. Use SNOOZE mode for periodic ADC sampling and UART reception without waking the CPU - the RL78/L13 hardware manual specifies typical SNOOZE current of 0.5 mA with peripherals running. STOP mode current is below 1 uA per the RL78/L13 datasheet, ideal for battery-powered meters.
Place the bypass capacitor (1uF ceramic) as close as possible to the VDD/VSS pins, with the ground via directly under the IC's exposed thermal pad to minimize ground bounce. For LCD-driven designs, route the segment and common lines away from noisy switching nodes (DC-DC converters, relay coils) to prevent display ghosting. Add a guard trace around the crystal oscillator pins (X1, X2) and keep them away from the LCD panel interconnect to avoid display flicker.
Three common pitfalls: (1) Selecting the wrong LCD voltage generation mode in the LCD mode register - this prevents the segment LCD from displaying correctly at low VDD. Always verify the VLCD voltage with the panel's datasheet Vopr spec. (2) Forgetting to disable the on-chip debug (OCD) pins in user firmware can cause the TEST pin to interfere with normal reset behavior. (3) Exceeding the RL78 flash endurance spec (typically 1000 erase/write cycles per block) by writing to EEPROM emulation blocks too frequently - use wear-leveling or a separate EEPROM IC for high-write applications.
Compliance Information
RoHS and lead-free compliance confirmed by Renesas product page and major distributors. The R5F10WMGAFB#50 is industrial grade (-40C to +85C) and NOT AEC-Q100 qualified for automotive applications - consult the RL78/L13 automotive variants for AEC-Q100 options.
