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Renesas R5F101LEDFA#X0
- Part No.:
- R5F101LEDFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LEDFA#X0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,227
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Product details
Overview
R5F101LEDFA#X0 from Renesas is a 64-pin LQFP-0.65mm, 16 KB flash, no data flash, industrial-grade (−40°C to +85°C) RL78/G13 16-bit MCU with 4 KB RAM, 10-bit ADC (26 channels), and real-time clock. It delivers 41 DMIPS at 32 MHz and operates from 1.6 V to 5.5 V, targeting low-power sensor nodes and embedded control in HVAC, smart meters, and industrial HMI.
For engineers reviewing the R5F101LEDFA#X0 datasheet, R5F101LEDFA#X0 pinout, R5F101LEDFA#X0 application, or R5F101LEDFA#X0 equivalent, key selection criteria include its zero-data-flash configuration for cost-sensitive firmware-fixed designs, 64-pin LQFP package compatibility with legacy layouts, −40°C to +85°C industrial temperature rating, and integrated RTC with calendar/alarm functions for time-stamped logging.
Technical Context
The R5F101LEDFA#X0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-power mode). It integrates a 10-bit A/D converter with up to 26 analog inputs and internal 1.45 V reference voltage.
It features dual serial interfaces - up to 4 UART/LIN channels and up to 10 I²C/Simplified I²C channels - alongside 16 × 16-bit timer channels, 1 × 12-bit interval timer, and 1 × real-time clock with calendar, alarm, and clock correction. Power management includes HALT, STOP, and SNOOZE modes, achieving 66 μA/MHz active current and 0.57 μA RTC+LVD retention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time control with low gate count and code density. |
| Max Clock Speed | 32 MHz; delivers 41 DMIPS for responsive motor control or protocol stack execution. |
| Flash Memory | 16 KB code flash; sufficient for compact firmware with bootloader and safety checks in space-constrained designs. |
| RAM | 4 KB on-chip RAM; supports moderate variable storage and stack depth for multitasked RTOS or interrupt-heavy applications. |
| ADC | 10-bit resolution, 26-channel SAR ADC with internal 1.45 V reference; enables direct sensing of thermistors, potentiometers, and battery voltage without external references. |
| RTC | Calendar-mode RTC with alarm and clock correction; provides accurate timestamping for data loggers without external crystal or backup battery circuitry. |
| Supply Voltage | 1.6 V to 5.5 V single supply; simplifies power design across battery-powered (2×AA/AAA) and 3.3 V/5 V rail systems. |
| Operating Temp | −40°C to +85°C; qualified for industrial environments including factory automation and outdoor metering enclosures. |
Pinout & Package
Package: 64-pin LQFP (12 × 12 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P10/SCK00/SCL00 | SPI clock / I²C clock | Shared pin supports either master SPI clock output or I²C bus clock; requires software-configurable peripheral routing. |
| P11/SI00/RxD0/TOOLRxD/SDA00 | SPI input / UART receive / debug RX / I²C data | Multi-function pin enabling in-system programming via UART, sensor interface via SPI, or I²C slave communication without pin duplication. |
| P20/ANI0/AVREFP | Analog input 0 / ADC reference positive | Allows external reference voltage injection or use as first ADC channel; critical for precision measurement calibration. |
| P21/ANI1/AVREFM | Analog input 1 / ADC reference negative | Enables differential ADC measurements or ground-referenced single-ended reads; supports ratiometric sensor scaling. |
| P50/INTP0/TOOLRST | Interrupt input / debug reset | Dual-role pin permits hardware-triggered wake-up from STOP mode or forced debugger reset without dedicated reset button. |
| VDD, VSS | Power supply / ground | Dedicated power pins per quadrant reduce noise coupling; decoupling capacitors required near each VDD–VSS pair for stable ADC/timer operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power STOP mode | 0.57 μA with RTC + LVD active - enables multi-year battery life in wireless sensor endpoints. |
| Self-programmable flash | Supports in-application firmware updates without external programmer; boot swap function ensures safe OTA rollback. |
| Hardware multiplier/divider | 16×16→32-bit multiply and 32÷32→32-bit divide in single-cycle execution - accelerates PID loop math and sensor linearization. |
| On-chip voltage detector (LVD) | 14-level programmable reset/interrupt threshold - protects against brown-out during battery discharge or transient load events. |
| Background data flash rewrite | BGO allows concurrent program execution while updating non-volatile parameter storage - eliminates latency in field calibration workflows. |
| Different-potential I/O | Supports 1.8 V/2.5 V/3 V logic interfacing directly to sensors or FPGAs - avoids level-shifter components and PCB area. |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity node transmitting data hourly via sub-GHz RF link. IC Role / Device Role / Timing Role: Main controller executing sensor readout, CRC calculation, sleep scheduling, and UART-to-RF bridge; RTC triggers periodic wake-up. Use Value: 0.57 μA STOP current extends CR2032 battery life beyond 5 years; 10-bit ADC with internal reference eliminates external precision voltage source. |
Use Scenario: DIN-rail mounted electricity meter recording kWh, voltage, and current with tamper detection. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC interface, LCD driver, EEPROM logging, and IR/RS-485 communications; RTC maintains billing timestamps. Use Value: 16 KB flash accommodates IEC 62056-compliant protocol stack and anti-tamper firmware; −40°C to +85°C rating ensures reliability in unventilated panels. |
| Programmable Logic Controller (PLC) I/O Module | Building Automation HMI |
|
Use Scenario: 8-channel digital input module detecting relay status and switch closures in factory control cabinets. IC Role / Device Role / Timing Role: Real-time I/O conditioner with debounce, isolation interface control, and Modbus RTU over RS-485; 16-bit timers handle precise pulse-width measurement. Use Value: 26-channel ADC supports optional analog input expansion; multiple UARTs enable simultaneous diagnostics and fieldbus communication. |
Use Scenario: Wall-mounted thermostat with touch keys, OLED display, and Zigbee connectivity for HVAC zoning. IC Role / Device Role / Timing Role: Central UI processor handling capacitive touch scan, display refresh, environmental sensor fusion, and wireless coexistence management. Use Value: On-chip key interrupt reduces CPU polling overhead; SNOOZE mode synchronizes ADC sampling with display frame timing to minimize EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101LEDFA#V0 | Identical silicon; differs only in packaging - tray vs. embossed tape. | No functional difference; same PCB layout and thermal profile. | Select #V0 for prototype builds requiring manual placement; #X0 preferred for automated SMT lines. |
| R5F101LEDFB#X0 | Same memory, peripherals, and temp grade; packaged in 64-pin LFQFP (0.5 mm pitch) instead of LQFP (0.65 mm). | Requires PCB footprint redesign; offers higher pin density but tighter assembly tolerance. | Choose #X0 (LQFP) for legacy board compatibility and easier rework; #X0 (LFQFP) only if space-constrained and high-volume assembly is confirmed. |
Compared with R5F101LEDFA#V0 and R5F101LEDFB#X0, the R5F101LEDFA#X0 uniquely balances standard LQFP manufacturability, industrial temperature compliance, and zero-data-flash cost optimization - making it ideal for fixed-function controllers where field parameter updates are unnecessary.
Availability
R5F101LEDFA#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and building automation HMIs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for R5F101LEDFA#X0 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 automotive, industrial, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized performance-per-milliwatt for battery-operated and energy-harvesting systems.
FAQ
What is the flash memory configuration of the R5F101LEDFA#X0?
The R5F101LEDFA#X0 contains 16 KB of on-chip code flash memory and no data flash memory. This configuration is intended for applications with fixed firmware that does not require runtime parameter storage. The absence of data flash reduces cost and simplifies qualification for safety-critical or write-cycle-limited deployments. R5F101LEDFA#X0 retains full self-programming capability for code updates via the boot swap function.
Does the R5F101LEDFA#X0 support real-time clock functionality?
Yes, the R5F101LEDFA#X0 integrates a full-featured real-time clock (RTC) with calendar support (up to 99 years), alarm interrupt, and clock correction. It operates independently in STOP mode using the 32.768 kHz subsystem clock and requires only a 32 kHz crystal or ceramic resonator. The RTC in R5F101LEDFA#X0 eliminates the need for external timekeeping ICs in data loggers and metering applications.
What is the operating temperature range for the R5F101LEDFA#X0?
The R5F101LEDFA#X0 is rated for industrial operation from −40°C to +85°C. This temperature grade corresponds to the "D" suffix in the part numbering scheme and is validated per Renesas' industrial qualification standards. The R5F101LEDFA#X0 maintains full specification compliance across this range, including ADC accuracy, oscillator stability, and flash write endurance.
Can the R5F101LEDFA#X0 operate from a single 1.8 V supply?
Yes, the R5F101LEDFA#X0 supports operation from 1.6 V to 5.5 V, making 1.8 V fully compliant. At 1.8 V, maximum clock frequency is reduced to 16 MHz (per datasheet DC characteristics), delivering ~20.5 DMIPS. All peripherals - including ADC, UART, and RTC - remain functional, though ADC reference accuracy and oscillator tolerance shift slightly within spec limits.
How many analog input channels does the R5F101LEDFA#X0 support?
The R5F101LEDFA#X0 supports up to 26 analog input channels for its 10-bit successive approximation register (SAR) ADC. These channels are mapped across multiple port pins (e.g., ANI0–ANI25), and the ADC includes an internal 1.45 V reference voltage source usable for ratiometric or absolute measurements. Channel selection is software-controlled via the ADSPR register.
Is the R5F101LEDFA#X0 pin-compatible with other RL78/G13 variants in 64-pin LQFP?
Yes, all RL78/G13 64-pin LQFP variants - including R5F100xxDFA#X0 (with data flash) and R5F101xxDFA#X0 (no data flash) - share identical pinouts and electrical characteristics. The R5F101LEDFA#X0 is fully pin-compatible with R5F100LEDFA#X0; differences are limited to flash memory configuration and associated security features, requiring only firmware-level adjustments.
R5F101LEDFA#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G13
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
R5F101LEDFA#X0 FAQ
1.How can I place an order for R5F101LEDFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LEDFA#X0 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 R5F101LEDFA#X0 reliable?
The price and inventory of R5F101LEDFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LEDFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LEDFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LEDFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LEDFA#X0?
R5F101LEDFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LEDFA#X0 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 R5F101LEDFA#X0?
For technical support, including R5F101LEDFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LEDFA#X0 requirements.
6.How does Aetrix verify that R5F101LEDFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LEDFA#X0 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 R5F101LEDFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LEDFA#X0?
All R5F101LEDFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LEDFA#X0, 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 R5F101LEDFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LEDFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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