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Renesas R5F101LEAFA#50
- Part No.:
- R5F101LEAFA#50
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LEAFA#50.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
R5F101LEAFA#50 from Renesas is a 64-pin LQFP-0.65mm, 16 KB flash, 2 KB RAM, RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz), integrated 10-bit ADC (26 channels), RTC, and UART/I²C/CSI interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101LEAFA#50 datasheet, R5F101LEAFA#50 pinout, R5F101LEAFA#50 application, or R5F101LEAFA#50 equivalent, key selection criteria include its data-flash-free architecture, -40°C to +85°C industrial temperature grade, 1.6–5.5 V supply range, and support for HALT/STOP/SNOOZE low-power modes in resource-constrained embedded control designs.
Technical Context
The R5F101LEAFA#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), and features a 1 MB address space with four banks of 8-bit general-purpose registers. It integrates on-chip power-on-reset (POR), voltage detector (LVD) with 14-level selection, and DMA controller with 2 channels.
Its peripheral set includes one 12-bit interval timer, one real-time clock with calendar/alarm/correction functions, one watchdog timer, and serial interfaces comprising up to 4 UART/LIN channels, 10 I²C/Simplified I²C channels, and 8 CSI (SPI-compatible) channels - all operating under single-supply 1.6–5.5 V conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space |
| Flash Memory | 16 KB code flash only; no data flash - simplifies firmware update logic and reduces BOM cost |
| RAM Size | 2 KB on-chip RAM - sufficient for real-time sensor fusion and lightweight protocol stacks |
| Supply Voltage | 1.6 V to 5.5 V - enables direct interface with Li-ion, alkaline, and USB-powered systems |
| Power Consumption | 66 μA/MHz active; 0.57 μA in RTC+LVD-only mode - extends battery life in always-on monitoring |
| ADC Resolution | 10-bit SAR ADC with 26 input channels and internal 1.45 V reference - supports multi-sensor analog front-end |
| Operating Temperature | -40°C to +85°C (Industrial A-grade) - qualified for factory automation and building controls |
Pinout & Package
Package: 64-pin LQFP, 12 mm × 12 mm, 0.65 mm pitch, exposed pad not specified - compatible with standard reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | SPI Clock / I²C Clock | Shared dual-function pin enabling hardware-selectable synchronous serial interface |
| P11/SI00/RxD0/TOOLRxD/SDA00 | SPI Input / UART RX / I²C Data | Multi-protocol pin supporting debug (TOOLRxD), communication (RxD0), and bus interface (SDA00) |
| P20/ANI0/AVREFP | Analog Input 0 / ADC Reference Positive | Configurable as primary analog channel or precision ADC reference source |
| P21/ANI1/AVREFM | Analog Input 1 / ADC Reference Negative | Enables differential ADC measurements or external reference biasing |
| P30/INTP0/TOOLnTRST | External Interrupt 0 / JTAG Reset | Dual-role pin supporting both field-triggered event handling and debug reset |
| VDD, VSS | Power Supply / Ground | Multiple dedicated pins ensure stable core and I/O rail decoupling in noise-sensitive applications |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power HALT/STOP/SNOOZE modes | Reduces system wake-up latency while achieving sub-μA retention current for intermittent sensing |
| On-chip high-accuracy oscillator (±1.0%) | Eliminates external crystal for UART/LIN timing-critical comms - saves board space and BOM cost |
| Self-programmable flash with boot swap | Enables robust over-the-air (OTA) firmware updates without external programmer or runtime interruption |
| Integrated RTC with calendar and alarm | Provides time-stamped logging and scheduled wake-up without external real-time clock IC |
| 10-bit ADC with internal temp sensor & ref | Supports closed-loop thermal compensation and self-calibration in environmental monitoring nodes |
| Multi-protocol serial interfaces (UART/I²C/CSI) | Allows concurrent connection to BLE modules, EEPROMs, and sensor hubs using shared pin resources |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-operated gas/water meter with pulse counting, pressure sensing, and RF telemetry. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, data aggregation, secure transmission, and low-power scheduling. Use Value: 0.57 μA RTC+LVD mode enables >10-year battery life; 10-bit ADC resolves pressure transducer outputs with ±0.1% linearity. |
Use Scenario: DIN-rail mounted vibration/temperature monitor in predictive maintenance systems. IC Role / Device Role / Timing Role: Edge-processing node executing FFT-based spectral analysis and threshold-triggered alert reporting. Use Value: 48 MHz-equivalent performance (41 DMIPS) handles real-time signal processing; UART/LIN support enables integration into legacy PLC networks. |
| Home Appliance Control | Building Automation Panel |
Use Scenario: Washing machine mainboard controlling motor drivers, water valves, and user interface. IC Role / Device Role / Timing Role: Central MCU coordinating PWM motor control, safety interlocks, and touch-button scanning. Use Value: 26-channel ADC monitors thermistors, current shunts, and hall-effect sensors simultaneously; N-ch open-drain I/O drives indicator LEDs directly. |
Use Scenario: HVAC zone controller interfacing with thermostats, dampers, and CO₂ sensors via I²C and UART. IC Role / Device Role / Timing Role: Protocol gateway translating Modbus RTU to local sensor bus and managing schedule-based actuation. Use Value: Integrated LIN support enables direct connection to automotive-grade HVAC actuators; 1.6–5.5 V operation tolerates wide input fluctuations from 24 V DC supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LEAFA#50 | Includes 4 KB data flash; same package, pinout, and peripherals | Required when firmware requires non-volatile parameter storage or field-upgradable calibration tables | Select if persistent data logging or configuration retention is mandatory |
| R5F101LCAFA#50 | 16 KB flash, 2 KB RAM, identical core/peripherals, but 48-pin LQFP package | Used where PCB space is constrained and I/O count ≤36 suffices | Choose for compact designs needing fewer GPIOs and lower assembly cost |
Compared with R5F100LEAFA#50, the R5F101LEAFA#50 eliminates data flash to reduce cost and simplify programming flow, while retaining full functional compatibility for fixed-parameter applications; compared with R5F101LCAFA#50, it provides 16 additional I/O pins and enhanced analog routing in the same 64-pin footprint.
Availability
R5F101LEAFA#50 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, and home appliance control systems requiring stable component supply across multi-year production cycles.
Supply support for R5F101LEAFA#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 management solutions for industrial, automotive, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power embedded applications - delivering optimized performance-per-milliwatt for battery-powered and energy-harvesting systems.
FAQ
What is the maximum operating frequency of the R5F101LEAFA#50?
The R5F101LEAFA#50 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS performance. Its minimum instruction execution time is 0.03125 μs at this frequency, and it supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation - all within the same device without external components.
Does the R5F101LEAFA#50 include data flash memory?
No, the R5F101LEAFA#50 does not include data flash memory. As indicated by the "101" prefix in its part number per Renesas documentation, it contains 16 KB of code flash only and 2 KB of RAM. For applications requiring non-volatile parameter storage, the pin-compatible R5F100LEAFA#50 (with 4 KB data flash) is the designated alternative.
What package type and pin count does the R5F101LEAFA#50 use?
The R5F101LEAFA#50 uses a 64-pin LQFP package with 0.65 mm pitch, identified by the "FA" suffix in its part number. It measures 12 mm × 12 mm and is supplied in embossed tape (#50 packaging specification), making it compatible with high-volume SMT assembly lines and standard reflow profiles.
Which communication interfaces are supported by the R5F101LEAFA#50?
The R5F101LEAFA#50 supports UART (up to 4 channels, LIN-capable), I²C/Simplified I²C (up to 10 channels), and CSI (SPI-compatible serial interface, up to 8 channels). These interfaces share pins flexibly - for example, P10 and P11 serve as SCK00/SCL00 and SI00/RxD0/SDA00 respectively - enabling multi-protocol connectivity without external level shifters.
What is the operating temperature range for the R5F101LEAFA#50?
The R5F101LEAFA#50 is rated for industrial operation from -40°C to +85°C, denoted by the "A" grade in its part number. This qualification meets requirements for deployment in factory automation, building controls, and outdoor metering equipment where ambient thermal stress exceeds consumer-grade limits.
R5F101LEAFA#50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G13
- 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:
- -
- RAM Size:
- 4K 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:
R5F101LEAFA#50 FAQ
1.How can I place an order for R5F101LEAFA#50 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LEAFA#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 R5F101LEAFA#50 reliable?
The price and inventory of R5F101LEAFA#50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LEAFA#50 is usually 5 days.
3.What payment methods are accepted for R5F101LEAFA#50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LEAFA#50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LEAFA#50?
R5F101LEAFA#50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LEAFA#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 R5F101LEAFA#50?
For technical support, including R5F101LEAFA#50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LEAFA#50 requirements.
6.How does Aetrix verify that R5F101LEAFA#50 is sourced from the original manufacturer or authorized distributors?
All R5F101LEAFA#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 R5F101LEAFA#50 meets industry standards.
7.What is the process for return or replacement of R5F101LEAFA#50?
All R5F101LEAFA#50 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LEAFA#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 R5F101LEAFA#50 part is unused and in its original packaging.
Return procedure for R5F101LEAFA#50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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