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Renesas R5F101LFAFB#10
- Part No.:
- R5F101LFAFB#10
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R5F101LFAFB#10.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 64LFQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,280
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Product details
Overview
R5F101LFAFB#10 from Renesas is a 64-pin LFQFP-0.5mm-pitch 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB RAM, no data flash, and industrial-grade operation (−40°C to +85°C). It integrates a 32 MHz high-accuracy on-chip oscillator (±1.0%), 10-bit 26-channel ADC, RTC with calendar/alarm, and ultra-low-power STOP mode (0.57 μA). It targets battery-powered industrial sensors and embedded control systems requiring deterministic real-time response and long-term reliability.
For engineers reviewing the R5F101LFAFB#10 datasheet, R5F101LFAFB#10 pinout, R5F101LFAFB#10 application, or R5F101LFAFB#10 equivalent, key selection criteria include its 64-pin LFQFP package, absence of data flash memory, −40°C to +85°C industrial temperature rating, 64 KB code flash capacity, and support for SNOOZE-mode peripheral wake-up without CPU intervention.
Technical Context
The R5F101LFAFB#10 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling 41 DMIPS at 32 MHz while maintaining ultra-low active power (66 μA/MHz). Its instruction execution time scales from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz), supporting both high-speed control loops and ultra-low-power RTC-only operation.
It features dual-clock domains: a high-speed main system clock (up to 32 MHz) and a dedicated low-speed subsystem clock (32.768 kHz) for RTC and watchdog timer. Peripheral integration includes 16× 16-bit timers, 3× I²C channels, 4× UART/LIN interfaces, and DMA with 2-channel support-enabling concurrent serial communication and memory transfers without CPU load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline, 41 DMIPS @ 32 MHz |
| Flash Memory | 64 KB code flash (1 KB block size); no data flash - limits field firmware updates without external storage |
| RAM | 4 KB on-chip RAM - sufficient for real-time control stacks and small buffers in sensor/actuator applications |
| Operating Voltage | 1.6 V to 5.5 V - supports direct connection to Li-ion, 3.3 V, or 5 V rails without level-shifting |
| Power Modes | STOP mode draws 0.57 μA (RTC + LVD active); HALT mode draws 66 μA/MHz - enables multi-year battery life in periodic-sense applications |
| Analog Peripherals | 10-bit 26-channel ADC with internal 1.45 V reference and temperature sensor - eliminates external references for thermal monitoring |
| Package & Temp | 64-pin LFQFP, 0.5 mm pitch; industrial grade (−40°C to +85°C) - suitable for factory-floor and outdoor equipment |
Pinout & Package
64-pin LFQFP (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports single-supply 1.6–5.5 V operation |
| P00–P07, P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77 | General-purpose I/O ports | 64 total I/O pins; configurable as N-ch open-drain (6 V tolerant), TTL input, or pull-up; supports 1.8/2.5/3 V interface |
| P10/SCK00/SCL00 | Serial clock for CSI0 or I²C0 | Shared pin enables SPI-like or I²C master/slave operation on same hardware resource |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial data input / UART receive / debug RX / I²C data | Multi-function pin consolidates programming, debugging, and dual-protocol serial communication |
| P20/ANI0/AVREFP | Analog input channel 0 / positive ADC reference | Enables external reference or ratiometric measurement; AVREFP can be tied to VDD or precision source |
| RESET | Active-low reset input | Accepts external reset signal; internally connected to on-chip POR and LVD circuits |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC and LVD active - enables decade-scale battery life in metering and environmental sensors |
| On-chip high-accuracy oscillator | ±1.0% accuracy over −20°C to +85°C at 32 MHz - eliminates external crystal for cost-sensitive timing-critical control |
| Background data flash rewrite | Not supported - R5F101LFAFB#10 lacks data flash memory, so parameter storage requires external EEPROM or FRAM |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction - provides timestamping and scheduled wake-up without host MCU overhead |
| Multi-protocol serial interfaces | Up to 4 UART/LIN, 3 I²C, and 8 CSI channels - supports mixed-protocol industrial networks (e.g., LIN motor control + I²C sensor bus) |
| Hardware DMA controller | 2-channel DMA with 2-cycle transfer between SFR and RAM - offloads UART/I²C buffering and ADC data capture from CPU |
Applications
| Industrial Sensor Node | Smart HVAC Actuator |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity/pressure node transmitting data every 15 minutes via sub-GHz RF link. IC Role / Device Role / Timing Role: Main controller executing sensor readout, RTC-triggered wake-up, ADC conversion, and low-power RF interface management. Use Value: STOP mode current of 0.57 μA extends CR2032 battery life beyond 5 years; integrated 10-bit ADC and temperature sensor eliminate BOM components. |
Use Scenario: Wall-mounted damper actuator with position feedback, local display, and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time motion control engine managing stepper driver PWM, reading potentiometer ADC, and handling RS-485 UART framing. Use Value: 41 DMIPS at 32 MHz ensures sub-millisecond loop timing; 26-channel ADC supports multi-sensor fusion (temp, current, position). |
| Programmable Logic Controller (PLC) I/O Module | Energy Meter Front-End Controller |
|
Use Scenario: DIN-rail mounted digital I/O expansion module with 16 isolated inputs and 8 relay outputs. IC Role / Device Role / Timing Role: Isolation interface coordinator, status polling engine, and CAN/LIN gateway between fieldbus and backplane. Use Value: 64 GPIO pins directly drive optocoupler inputs and relay drivers; UART/LIN support enables legacy fieldbus interoperability. |
Use Scenario: Residential smart meter measuring voltage, current, and energy consumption with tamper detection and LCD display. IC Role / Device Role / Timing Role: Metrology co-processor acquiring ADC samples, computing RMS/energy, managing RTC calendar, and updating segmented LCD. Use Value: Integrated RTC with calendar and alarm enables billing cycle tracking; 10-bit ADC with internal reference reduces calibration drift vs. external references. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100LFAFB#10 | Includes 4 KB data flash memory; identical 64 KB code flash, 4 KB RAM, and LFQFP-64 package | Supports in-field firmware parameter updates and data logging without external memory | Select when non-volatile parameter storage or background flash rewriting is required |
| R5F101LJAFB#10 | Same core and peripherals but in 52-pin LQFP-0.65mm package; 64 KB flash, 4 KB RAM, no data flash | Fewer I/O (48 vs. 64) and reduced analog channel count (22 vs. 26); smaller footprint | Select when board space is constrained and full 64-pin I/O count is unnecessary |
Compared with R5F100LFAFB#10, the R5F101LFAFB#10 trades data flash capability for lower cost and simplified BOM, while compared with R5F101LJAFB#10, it delivers 16 additional GPIOs and 4 extra ADC channels in the same industrial temperature grade - making it optimal for I/O-dense sensor aggregation.
Availability
R5F101LFAFB#10 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, PLC I/O modules, and energy meter front-end controllers requiring stable component supply across multi-year production cycles.
Supply support for R5F101LFAFB#10 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 is engineered for ultra-low-power general-purpose embedded control, balancing performance, energy efficiency, and peripheral richness for cost-sensitive industrial and consumer applications.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101LFAFB#10?
The R5F101LFAFB#10 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its RL78 CPU core achieves this with a 3-stage pipeline and supports variable instruction timing - from 0.03125 μs at 32 MHz down to 30.5 μs at 32.768 kHz - enabling both high-speed control and ultra-low-power RTC operation within the same R5F101LFAFB#10 device.
Does the R5F101LFAFB#10 include data flash memory?
No, the R5F101LFAFB#10 does not include data flash memory. The "101" in the part number explicitly denotes "data flash not provided", per Renesas' RL78/G13 part numbering convention. Applications requiring non-volatile parameter storage must use external EEPROM, FRAM, or rely on code flash reprogramming with appropriate wear-leveling - unlike the R5F100LFAFB#10 variant which includes 4 KB of dedicated data flash.
What are the supported low-power modes and their typical current consumption for R5F101LFAFB#10?
The R5F101LFAFB#10 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it consumes 0.57 μA - ideal for battery-backed timekeeping and periodic wake-up. HALT mode draws 66 μA/MHz during active computation. SNOOZE mode allows selected peripherals (e.g., UART, ADC) to operate autonomously while CPU remains halted, reducing average system power in event-driven applications using the R5F101LFAFB#10.
Which serial communication protocols does the R5F101LFAFB#10 support natively?
The R5F101LFAFB#10 integrates native hardware support for UART/LIN (up to 4 channels), I²C (up to 3 channels), and CSI (SPI-compatible serial interface, up to 8 channels). All are independently configurable and can operate concurrently. LIN compliance includes automatic sync-break detection and checksum generation, enabling direct integration into automotive body electronics or industrial LIN networks using the R5F101LFAFB#10 without external protocol translators.
What is the ADC resolution, channel count, and reference configuration for R5F101LFAFB#10?
The R5F101LFAFB#10 features a 10-bit successive-approximation ADC with up to 26 input channels. It supports selectable reference sources: external AVREFP/AVREFM pins or internal 1.45 V reference. The internal reference enables ratiometric measurements and eliminates external voltage references in thermal sensing or battery monitoring applications - a key design advantage of the R5F101LFAFB#10 for compact, low-BOM-cost systems.
R5F101LFAFB#10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-LQFP
- Series:
- RL78/G13
- Packaging:
- Tray
- 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:
- 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:
R5F101LFAFB#10 FAQ
1.How can I place an order for R5F101LFAFB#10 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101LFAFB#10 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 R5F101LFAFB#10 reliable?
The price and inventory of R5F101LFAFB#10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101LFAFB#10 is usually 5 days.
3.What payment methods are accepted for R5F101LFAFB#10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101LFAFB#10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101LFAFB#10?
R5F101LFAFB#10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101LFAFB#10 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 R5F101LFAFB#10?
For technical support, including R5F101LFAFB#10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101LFAFB#10 requirements.
6.How does Aetrix verify that R5F101LFAFB#10 is sourced from the original manufacturer or authorized distributors?
All R5F101LFAFB#10 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 R5F101LFAFB#10 meets industry standards.
7.What is the process for return or replacement of R5F101LFAFB#10?
All R5F101LFAFB#10 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101LFAFB#10, 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 R5F101LFAFB#10 part is unused and in its original packaging.
Return procedure for R5F101LFAFB#10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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