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Renesas R5F101LFAFA#X0
- Part No.:
- R5F101LFAFA#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LFAFA#X0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,606
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Product details
Overview
R5F101LFAFA#X0 from Renesas is a 64-pin LQFP-0.65mm ultra-low-power 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB RAM, and no data flash memory, operating from 1.6 V to 5.5 V across -40°C to +85°C industrial temperature range. It delivers 41 DMIPS at 32 MHz, integrates 16-bit timers (12 channels), 10-bit ADC (16 channels), UART/SPI/I²C interfaces, RTC, and low-power STOP/HALT/SNOOZE modes - deployed in battery-powered sensor nodes and industrial control panels.
For engineers reviewing the R5F101LFAFA#X0 datasheet, R5F101LFAFA#X0 pinout, R5F101LFAFA#X0 application, or R5F101LFAFA#X0 equivalent, key selection criteria include its 64-pin LQFP package, absence of on-chip data flash, 10-bit ADC channel count, real-time clock calendar support, and compatibility with Renesas' RL78 development ecosystem including CS+ and e² studio.
Technical Context
The R5F101LFAFA#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). Its memory map spans 1 MB address space with dedicated SFR regions for peripheral control.
Power management includes on-chip POR and LVD with 14 selectable voltage detection levels, DMA controller (2 channels), and background operation during data flash rewrite - though this variant omits data flash entirely per part numbering convention ('101' = no data flash), relying solely on code flash for firmware storage and runtime parameter retention via EEPROM emulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Clock Speed | 32 MHz - enables 41 DMIPS performance for real-time control tasks |
| Flash Memory | 64 KB code flash - sufficient for medium-complexity firmware with bootloader and safety checks |
| RAM Size | 4 KB on-chip RAM - supports stack, heap, and peripheral buffers without external memory |
| ADC Resolution | 10-bit SAR ADC with 16 input channels - suitable for precision analog sensing in industrial monitoring |
| Operating Voltage | 1.6 V to 5.5 V - allows direct interface with Li-ion, alkaline, or 3.3/5 V system rails |
| Temp Range | -40°C to +85°C - qualified for industrial ambient environments without derating |
| Low-Power Modes | HALT, STOP, SNOOZE - achieves 0.57 μA RTC+LVD active current for multi-year battery life |
Pinout & Package
64-pin LQFP package (12 × 12 mm, 0.65-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support noise isolation between analog and digital sections |
| P00–P07 | General-purpose I/O with N-ch open drain option | Configurable for 1.8/2.5/3.3 V logic interfacing and 6 V tolerant inputs |
| P10–P17 | SPI0/UART0/I²C0 multiplexed pins | Shared peripheral functions reduce pin count while enabling protocol flexibility |
| P20–P27 | Analog inputs (ANI0–ANI7) and AVREFP/AVREFM | Supports differential ADC measurements with internal reference voltage (1.45 V) |
| P30–P37 | Timer output (TO00–TO07), interrupt inputs, key scan | Hardware timer outputs eliminate software overhead for PWM or pulse generation |
| RESET | Active-low reset input | Accepts external reset signals or internal POR/LVD assertion |
| CLKP/CLKM | Crystal oscillator connections | Supports 32.768 kHz crystal for RTC accuracy or external clock source up to 20 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 66 μA/MHz active current and 0.57 μA RTC+LVD standby enable decade-long battery operation |
| On-chip debug interface | Fully integrated debug circuit eliminates need for external JTAG emulator; supports flash programming and real-time trace |
| Self-programming capability | Code flash reprogramming in-system via boot swap function - enables field firmware updates without external tools |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - provides accurate timekeeping without external RTC IC |
| Peripheral independence | Multiple serial interfaces (CSI, UART, I²C) and timers operate independently of CPU - reduces interrupt latency and improves determinism |
| Temperature sensor | Integrated analog temperature sensor with 10-bit ADC conversion - enables thermal monitoring without external components |
Applications
| Smart Energy Metering | Industrial HMI Panel |
|---|---|
Use Scenario: Standalone electricity meter with pulse counting, tariff switching, and local display. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing LCD driver, and logging consumption data to external EEPROM. Use Value: 10-bit ADC with 16 channels captures voltage/current transformer outputs; RTC calendar ensures accurate billing period alignment. | Use Scenario: Touch-enabled operator interface for PLC-controlled machinery with status LEDs and fault alerts. IC Role / Device Role / Timing Role: Human-machine interface processor handling button debouncing, LED PWM dimming, and serial communication with host controller. Use Value: 64-pin LQFP provides ample GPIO for matrix keypad and discrete I/O; SNOOZE mode extends uptime during idle periods. |
| Wireless Sensor Node | Building Automation Controller |
Use Scenario: Battery-powered environmental monitor transmitting temperature/humidity via sub-GHz RF module. IC Role / Device Role / Timing Role: Sensor acquisition and RF packet formatting controller with wake-on-interrupt from motion or threshold crossing. Use Value: 0.57 μA STOP mode with RTC wake-up enables multi-year deployment; integrated temperature sensor reduces BOM cost. | Use Scenario: HVAC zone controller regulating damper position, fan speed, and occupancy-based lighting via DALI/0–10 V interfaces. IC Role / Device Role / Timing Role: Central timing and actuator coordination unit synchronizing analog outputs, digital inputs, and communication protocols. Use Value: 16-bit timer channels generate precise PWM for motor control; UART/LIN support enables interoperability with legacy building systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LFAFA#X0 | Includes 4 KB data flash memory; same 64 KB code flash, 4 KB RAM, and identical pinout | Required when non-volatile parameter storage (e.g., calibration data, device ID) must reside on-chip without external EEPROM | Select if firmware requires frequent data logging or field-updatable configuration storage |
| R5F101LFAFB#X0 | Same core and memory specs but in 64-pin LFQFP (0.5-mm pitch); different mechanical footprint and thermal characteristics | Used where board space constraints favor smaller package or thermal dissipation differs significantly | Choose only when redesigning PCB layout to accommodate 0.5-mm pitch; not drop-in compatible |
Compared with R5F100LFAFA#X0, the R5F101LFAFA#X0 trades data flash for reduced cost and simpler firmware architecture, while R5F101LFAFB#X0 offers identical functionality in a denser package requiring revised land patterns and assembly processes.
Availability
R5F101LFAFA#X0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart energy meters, wireless sensor nodes, and building automation controllers requiring stable component supply across extended product lifecycles.
Supply support for R5F101LFAFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose applications - balancing performance, integration, and energy efficiency for battery-operated and thermally constrained systems.
FAQ
What is the maximum operating frequency of the R5F101LFAFA#X0?
The R5F101LFAFA#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This frequency is achievable across the full 1.6 V to 5.5 V supply range and -40°C to +85°C temperature span, with oscillator accuracy of ±1.0% under specified conditions. The R5F101LFAFA#X0 also supports lower-frequency modes down to 32.768 kHz for RTC and ultra-low-power operation.
Does the R5F101LFAFA#X0 include data flash memory?
No, the R5F101LFAFA#X0 does not include data flash memory. Per Renesas part-numbering convention, the '101' prefix indicates absence of on-chip data flash, distinguishing it from '100' variants like R5F100LFAFA#X0 which integrate 4 KB of data flash. Firmware and critical parameters must be stored in code flash or external non-volatile memory when using the R5F101LFAFA#X0.
What package type and pin count does the R5F101LFAFA#X0 use?
The R5F101LFAFA#X0 uses a 64-pin LQFP package with 0.65-mm pitch (PLQP0064JA-A), measuring 12 × 12 mm. The 'FA' suffix in the part number explicitly denotes LQFP-0.65mm, and the '#X0' ending indicates embossed tape packaging. This package is RoHS-compliant and rated for industrial temperature operation (-40°C to +85°C).
Can the R5F101LFAFA#X0 support real-time clock functionality with calendar features?
Yes, the R5F101LFAFA#X0 integrates a full-featured real-time clock (RTC) with calendar support for years, months, days, hours, minutes, and seconds - covering a 99-year range. It includes alarm interrupt capability and hardware clock correction, all operational in STOP mode with only 0.57 μA current draw. This eliminates the need for external RTC ICs in time-critical applications such as energy metering or scheduling-based control.
Which development tools are officially supported for the R5F101LFAFA#X0?
Renesas officially supports the R5F101LFAFA#X0 with CS+ (formerly CubeSuite+) IDE, e² studio (Eclipse-based), and the Renesas Flash Programmer. Hardware debugging is enabled via the on-chip debug interface using E2 emulator Lite or E2 emulator standard. The R5F101LFAFA#X0 is also compatible with Renesas' RL78/G13 Fast Prototyping Board (YRDKRL78G13) for rapid evaluation and firmware validation.
R5F101LFAFA#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:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
R5F101LFAFA#X0 FAQ
1.How can I place an order for R5F101LFAFA#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LFAFA#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 R5F101LFAFA#X0 reliable?
The price and inventory of R5F101LFAFA#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LFAFA#X0 is usually 5 days.
3.What payment methods are accepted for R5F101LFAFA#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LFAFA#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LFAFA#X0?
R5F101LFAFA#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LFAFA#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 R5F101LFAFA#X0?
For technical support, including R5F101LFAFA#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LFAFA#X0 requirements.
6.How does Aetrix verify that R5F101LFAFA#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101LFAFA#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 R5F101LFAFA#X0 meets industry standards.
7.What is the process for return or replacement of R5F101LFAFA#X0?
All R5F101LFAFA#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LFAFA#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 R5F101LFAFA#X0 part is unused and in its original packaging.
Return procedure for R5F101LFAFA#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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