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Renesas R5F104LEAFA#50
- Part No.:
- R5F104LEAFA#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F104LEAFA#50.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
R5F104LEAFA#50 from Renesas is a 48-pin LQFP-0.65 mm pitch, 48 KB flash, 5.5 KB RAM RL78/G14 16-bit microcontroller with ultra-low-power operation (66 μA/MHz), 32 MHz max CPU speed, and integrated peripherals including 10-bit ADC (16 channels), UART/LIN (3 channels), I²C (4 channels), and RTC. It targets battery-powered industrial sensors and smart metering interfaces.
For engineers reviewing the R5F104LEAFA#50 datasheet, R5F104LEAFA#50 pinout, R5F104LEAFA#50 application, or R5F104LEAFA#50 equivalent, key selection criteria include its 48-pin LQFP package, -40°C to +85°C industrial temperature grade (A-field), 48 KB code flash with data flash, and support for SNOOZE mode wake-up via peripheral events.
Technical Context
The R5F104LEAFA#50 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz). It integrates a Data Transfer Controller (DTC) for autonomous memory transfers and an Event Link Controller (ELC) enabling direct peripheral-to-peripheral event triggering without CPU intervention.
Its power management includes HALT, STOP, and SNOOZE modes, with real-time clock operation at 0.60 μA and on-chip voltage detector (LVD) offering 14 selectable reset/interrupt thresholds. The high-speed on-chip oscillator delivers ±1.0% accuracy across 1.8–5.5 V and -20°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and multiply/accumulate instructions |
| Max Clock Speed | 32 MHz - enables 44 DMIPS performance for real-time control loops |
| Flash Memory | 48 KB code flash + 4 KB data flash - supports background rewriting and 1,000,000 write cycles |
| RAM | 5.5 KB on-chip RAM - sufficient for RTOS stacks and sensor data buffering |
| ADC | 10-bit resolution, 16-channel SAR ADC with internal 1.45 V reference and temperature sensor |
| Serial Interfaces | 3× UART/LIN, 4× I²C, 3× CSI - enables multi-protocol communication in constrained nodes |
| Operating Voltage | 1.6 V to 5.5 V - supports direct connection to Li-ion, alkaline, or 3.3 V/5 V rails |
| Temp Range | -40°C to +85°C (A-field) - qualified for industrial ambient environments |
Pinout & Package
Package: 48-pin LQFP, 10 × 10 mm body, 0.65 mm pitch, exposed pad not applicable (plastic LQFP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit; timer input; debug clock input - configurable for serial comms or timing capture |
| P01 | RxD1 / TO00 / TRGCLKB | Primary UART receive; timer output; debug clock output - supports full-duplex UART and synchronized debugging |
| P10–P17 | CSI1/SPI1, I²C1, UART2, TRDIOx | Multiplexed serial and touch-sensing I/O - enables shared bus routing and capacitive sensing without external ICs |
| P30 | INTP3 / RTC1HZ / SCK00 / SCL00 | RTC interrupt output and I²C master clock - provides precise 1 Hz timing signal and dual-role I²C interface |
| P50/P51 | RxD0/TxD0 / TOOLRxD/TOOLTxD | On-chip debug UART channel - allows firmware updates and real-time logging without dedicated debug header |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up - ensures reliable startup after brown-out or power sequencing |
| VDD/VSS | Power supply pins | Dual VDD/VSS pairs reduce noise coupling - improves ADC accuracy and oscillator stability in mixed-signal designs |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.60 μA with RTC + LVD active - extends battery life to years in periodic wake-up applications |
| SNOOZE mode operation | Permits peripheral-triggered wake-up while CPU remains halted - reduces average current without sacrificing responsiveness |
| On-chip data flash | 4 KB with background operation (BGO) - enables firmware parameter storage and field-upgradable calibration tables |
| Event Link Controller (ELC) | Links 19–26 peripheral events directly - eliminates CPU polling and ISR latency for time-critical signal chains |
| Hardware DTC | Supports block, repeat, and chain transfer modes - offloads DMA-like tasks from CPU during sensor data acquisition |
| Integrated LIN support | UART hardware with LIN break detection and sync field generation - simplifies automotive body electronics integration |
Applications
| Smart Utility Meter Interface | Industrial Temperature Sensor Node |
|---|---|
Use Scenario: Communicates with metrology ICs and RF modules in electricity/water meters using UART and I²C. IC Role / Device Role / Timing Role: Central controller managing data aggregation, secure storage, and low-power wake-up scheduling. Use Value: 48 KB flash stores encryption keys and firmware; SNOOZE mode enables 15-second wake intervals with sub-μA average current. | Use Scenario: Reads thermistor/RTD inputs, compensates for drift, and transmits via RS-485 or LoRaWAN gateway. IC Role / Device Role / Timing Role: Signal conditioner and protocol bridge with calibrated 10-bit ADC and LIN-compatible UART. Use Value: On-chip temperature sensor and 1.45 V reference enable self-calibration; 16-channel ADC supports multi-sensor fusion. |
| Home Appliance Motor Control | Asset Tracking Beacon |
Use Scenario: Drives BLDC fans or compressors using PWM outputs and monitors current/voltage feedback. IC Role / Device Role / Timing Role: Real-time motor commutation controller with ADC-based current sensing and fault protection. Use Value: TAU timer array provides 8× 16-bit channels for independent PWM generation; 32 MHz clock ensures <1 μs timing resolution. | Use Scenario: Monitors GPS fix status, battery voltage, and motion via accelerometer, then wakes cellular modem only on event. IC Role / Device Role / Timing Role: Low-power system supervisor coordinating sleep/wake cycles and sensor sampling. Use Value: 0.60 μA STOP mode with RTC alarm enables 10-year coin-cell operation; ELC triggers ADC on motion interrupt. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104LEAFB#50 | Same core, flash, RAM, and peripherals; differs only in package (48-pin LFQFP, 0.5 mm pitch) | Requires PCB layout change due to finer pitch and different thermal pad requirements | Select when board space is constrained and reflow capability supports 0.5 mm pitch |
| R5F104LGAFB#50 | 128 KB flash, 12 KB RAM, same package; otherwise identical peripheral set and power profile | Preferred for designs requiring larger firmware image or future feature expansion without hardware revision | Choose when bootloader, OTA update, or safety library space exceeds 48 KB allocation |
Compared with R5F104LEAFA#50, the R5F104LEAFB#50 offers identical functionality in a denser package demanding tighter layout tolerances, while the R5F104LGAFB#50 provides scalable memory headroom for complex firmware-both retain the same ultra-low-power architecture and peripheral compatibility.
Availability
R5F104LEAFA#50 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and asset tracking applications requiring stable component supply and long-term industrial qualification.
Supply support for R5F104LEAFA#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, and power solutions for industrial, automotive, and IoT markets.
The RL78/G14 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and energy-efficient embedded systems requiring rich analog integration and robust industrial qualification.
FAQ
What is the maximum operating frequency of the R5F104LEAFA#50?
The R5F104LEAFA#50 supports a maximum CPU clock frequency of 32 MHz using the high-speed on-chip oscillator, delivering 44 DMIPS performance. This frequency is achievable across the full 1.6–5.5 V supply range and -40°C to +85°C ambient temperature, with ±1.0% oscillator accuracy specified at 1.8–5.5 V and -20°C to +85°C.
Does the R5F104LEAFA#50 include an integrated ADC, and what are its key specifications?
Yes, the R5F104LEAFA#50 integrates a 10-bit successive approximation register (SAR) ADC with up to 16 analog input channels. It features an internal 1.45 V reference voltage and an on-chip temperature sensor. The ADC operates across the full 1.6–5.5 V supply range and supports programmable sample-and-hold timing, making it suitable for precision sensor interfacing in industrial and metering applications.
What debug interfaces are supported by the R5F104LEAFA#50?
The R5F104LEAFA#50 supports on-chip debugging via a dedicated UART channel using pins P50 (TOOLRxD) and P51 (TOOLTxD), eliminating the need for external debug probes in basic development and field firmware updates. It also supports the Renesas E1/E20 emulator interface through the SWD/JTAG-compatible debug port, enabling full-featured breakpoint, trace, and memory inspection capabilities during development.
Is the R5F104LEAFA#50 qualified for industrial temperature operation?
Yes, the R5F104LEAFA#50 is rated for industrial operation from -40°C to +85°C (A-field specification). This qualification covers all electrical characteristics, timing parameters, and reliability testing per Renesas' industrial-grade standards, ensuring stable performance in factory automation, building controls, and outdoor metering equipment.
How does the SNOOZE mode function on the R5F104LEAFA#50, and which peripherals can wake the device?
SNOOZE mode on the R5F104LEAFA#50 halts the CPU while allowing selected peripherals-including the RTC, ADC, UART, and ELC-linked modules-to remain active. Wake-up is triggered by events such as RTC alarm, ADC conversion completion, UART receive interrupt, or ELC-configured peripheral signals. This enables deterministic, low-latency response with average current significantly lower than active mode.
R5F104LEAFA#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G14
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- RL78
- Core Size:
- 16-Bit
- Speed:
- 32MHz
- Connectivity:
- CSI, I2C, LINbus, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 5.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 12x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104LEAFA#50 FAQ
1.How can I place an order for R5F104LEAFA#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104LEAFA#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 R5F104LEAFA#50 reliable?
The price and inventory of R5F104LEAFA#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104LEAFA#50 is usually 5 days.
3.What payment methods are accepted for R5F104LEAFA#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104LEAFA#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104LEAFA#50?
R5F104LEAFA#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104LEAFA#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 R5F104LEAFA#50?
For technical support, including R5F104LEAFA#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104LEAFA#50 requirements.
6.How does Aetrix verify that R5F104LEAFA#50 is sourced from the original manufacturer or authorized distributors?
All R5F104LEAFA#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 R5F104LEAFA#50 meets industry standards.
7.What is the process for return or replacement of R5F104LEAFA#50?
All R5F104LEAFA#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104LEAFA#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 R5F104LEAFA#50 part is unused and in its original packaging.
Return procedure for R5F104LEAFA#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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