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Renesas R5F101FKAFP#X0
- Part No.:
- R5F101FKAFP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
R5F101FKAFP#X0.pdf
- Description:
- IC MCU 16BIT 384KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,572
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Product details
Overview
R5F101FKAFP#X0 from Renesas is a 44-pin LQFP-44, 32-bit RL78/G13 microcontroller with 256 KB flash memory, 8 KB data flash, 20 KB RAM, and true low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD). It integrates 16-bit timers, 10-bit ADC (24 channels), UART/LIN, I²C, CSI, RTC, and operates from 1.6–5.5 V for battery-powered industrial control and sensor interface applications.
For engineers reviewing the R5F101FKAFP#X0 datasheet, R5F101FKAFP#X0 pinout, R5F101FKAFP#X0 application, or R5F101FKAFP#X0 equivalent, key selection criteria include its 44-pin LQFP package, absence of on-chip data flash (R5F101x series), industrial-grade temperature range (−40°C to +85°C), and support for SNOOZE mode for ultra-low-power wake-up event handling.
Technical Context
The R5F101FKAFP#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 subsystem clock). It features dual-clock domains: high-speed on-chip oscillator (selectable 1–32 MHz, ±1.0% accuracy) and dedicated low-speed oscillator for watchdog and RTC.
Its peripheral set includes up to 16 channels of 16-bit timer, 1-channel 12-bit interval timer, calendar-based RTC with alarm and correction, 2–4 channel DMA, and 3–10 channel I²C/Simplified I²C - all configurable without external components. The device supports background operation during data flash rewriting and self-programming with boot swap capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 32-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Flash Memory | 256 KB code flash; no on-chip data flash (R5F101x series designation) |
| RAM | 20 KB on-chip SRAM for program/data storage and flash library operation |
| Operating Voltage | 1.6 V to 5.5 V single supply - enables direct Li-ion, 3.3 V, or 5 V system integration |
| Power Consumption | 66 μA/MHz active current; 0.57 μA in STOP mode with RTC + LVD enabled |
| ADC | 10-bit resolution, 24 analog input channels, internal 1.45 V reference and temperature sensor |
| Package | 44-pin LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, embossed tape (#X0) |
Pinout & Package
44-pin plastic LQFP (10 × 10 mm, 0.8-mm pitch), JEDEC standard PLQP0044GC-A footprint. Pin functions validated per Renesas R01DS0131EJ0380 Rev.3.80, pages 7–8 and Figure 1-1.
| 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 mixed-voltage I/O (1.8/2.5/3.0 V interfaces) |
| P10/SCK00/SCL00 | Serial clock I/O | Configurable as SPI clock (CSI) or I²C clock - enables shared bus topology with hardware arbitration |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial data I/O | Multi-function pin supporting SPI input, UART receive, debug RX, and I²C data - reduces external logic in protocol-flexible designs |
| P20/ANI0/AVREFP | Analog input / reference positive | Primary ADC channel 0 input with selectable AVREFP source - allows ratiometric or absolute voltage measurement |
| P21/ANI1/AVREFM | Analog input / reference negative | ADC channel 1 input or AVREFM sink - enables differential ADC measurements and precision sensor biasing |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to POR and LVD circuits - eliminates need for discrete reset IC |
Key Features
| Feature | Design Value |
|---|---|
| SNOOZE mode operation | Permits UART/I²C/CSI interrupt wake-up while CPU remains halted - extends battery life in polling-free sensor gateways |
| On-chip RTC with calendar | 99-year calendar, alarm, and clock correction - enables time-stamped logging without external real-time clock IC |
| Background data flash rewrite | Execute code from flash while rewriting data flash - supports firmware-over-the-air (FOTA) updates without runtime interruption |
| Hardware LIN bus support | UART peripheral includes LIN break detection and sync field generation - meets ISO 17987-4 for automotive body electronics |
| 14-level LVD with interrupt/reset | Configurable voltage detector thresholds (1.6–4.2 V) - enables graceful shutdown or brown-out recovery in portable equipment |
Applications
| Smart Sensor Node | Industrial HMI Panel |
|---|---|
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and CO₂ via analog and digital sensors. IC Role / Device Role / Timing Role: Main controller executing sensor fusion, local decision logic, and low-power wireless transmission scheduling. Use Value: 0.57 μA STOP mode with RTC maintains timekeeping and wake-up scheduling while extending 10-year battery life. | Use Scenario: Touch-enabled operator interface for PLC-controlled HVAC systems with local display and button feedback. IC Role / Device Role / Timing Role: Human-machine interface processor managing touch scan, LED/button I/O, serial communication to PLC, and real-time status display. Use Value: 24-channel 10-bit ADC supports multi-sensor analog inputs; integrated UART/LIN enables direct connection to industrial fieldbus networks. |
| Energy Meter Front-End | White Goods Motor Control |
Use Scenario: Residential electricity meter measuring voltage/current via shunt or CT, computing kWh, and reporting via RS-485 or NB-IoT modem. IC Role / Device Role / Timing Role: Metrology front-end controller performing ADC sampling, RMS calculation, tamper detection, and secure data logging. Use Value: On-chip 1.45 V reference and temperature sensor enable drift-compensated metrology; 256 KB flash stores firmware and encrypted usage logs. | Use Scenario: Fan or compressor motor control in refrigerators and washing machines using sensorless BLDC commutation. IC Role / Device Role / Timing Role: Motor control MCU generating PWM outputs, reading hall sensors or back-EMF, and implementing closed-loop speed regulation. Use Value: 16-bit timers with complementary PWM output and dead-time insertion simplify inverter gate drive design; 20 KB RAM accommodates complex FOC algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100FKAFP#X0 | Same 44-pin LQFP package and 256 KB flash, but includes 8 KB on-chip data flash (R5F100x series) | Required where frequent nonvolatile parameter storage (e.g., calibration data, user settings) is needed without external EEPROM | Select R5F100FKAFP#X0 if data flash persistence is mandatory; otherwise R5F101FKAFP#X0 reduces cost and simplifies BOM. |
| RA2A1GBMH20#AC0 | Arm® Cortex®-M23 core, 256 KB flash, 32 KB SRAM, 12-bit ADC (24 ch), operates at 1.6–5.5 V, but lacks integrated LIN and has higher active current (110 μA/MHz) | Better suited for applications requiring Arm ecosystem compatibility, larger RAM, or cryptographic acceleration | Choose RA2A1GBMH20#AC0 when migrating to Arm-based toolchains or needing TrustZone security features; retain R5F101FKAFP#X0 for legacy RL78 codebase and ultra-low-power LIN integration. |
Compared with R5F100FKAFP#X0, the R5F101FKAFP#X0 removes data flash to reduce cost and die size while retaining identical code flash, peripherals, and power profile - ideal for fixed-parameter firmware. Versus RA2A1GBMH20#AC0, it offers lower active power and native LIN support but trades off Arm compatibility and cryptographic capability.
Availability
R5F101FKAFP#X0 is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, energy meter front-ends, and white goods motor control requiring stable component supply across long-lifecycle production programs.
Supply support for R5F101FKAFP#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 Corporation is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The RL78/G13 product line delivers ultra-low-power, cost-optimized 32-bit MCUs targeting general-purpose industrial control, sensor interfacing, and battery-operated equipment - emphasizing energy efficiency, integrated analog, and functional safety readiness.
FAQ
What is the maximum operating frequency and core performance of the R5F101FKAFP#X0?
The R5F101FKAFP#X0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its RL78 CPU core executes instructions in as little as 0.03125 μs at full speed, with configurable clock division enabling dynamic power/performance scaling - critical for balancing responsiveness and battery life in the R5F101FKAFP#X0.
Does the R5F101FKAFP#X0 include on-chip data flash memory?
No, the R5F101FKAFP#X0 does not include on-chip data flash memory. Per Renesas part numbering convention (R5F101x = "data flash not provided"), this variant relies on external nonvolatile storage or uses code flash sectors for parameter retention. This distinguishes it from the R5F100x series, which integrates 4–8 KB of dedicated data flash - a key differentiator confirmed in the R01DS0131EJ0380 datasheet section 1.2.
What package type and pin count does the R5F101FKAFP#X0 use?
The R5F101FKAFP#X0 uses a 44-pin plastic LQFP package (10 × 10 mm, 0.8-mm pitch) with JEDEC standard footprint PLQP0044GC-A. The "#X0" suffix indicates embossed tape packaging, and the "FP" in the part number denotes LQFP - verified in Table 1-1 (page 7) of the R01DS0131EJ0380 datasheet.
What is the operating temperature range for the R5F101FKAFP#X0?
The R5F101FKAFP#X0 is rated for industrial operation from −40°C to +85°C ('D' grade). This is explicitly defined in the RL78/G13 family outline (section 1.1) and confirmed by the "D" position in the part number structure per Figure 1-1 - making it suitable for factory automation, building controls, and outdoor equipment where extended thermal stability is required.
Which communication interfaces are supported by the R5F101FKAFP#X0?
The R5F101FKAFP#X0 supports UART (with LIN bus compliance), I²C/Simplified I²C (3–10 channels), and CSI (Simplified SPI, 2–8 channels). All are implemented in hardware with independent clock sources and interrupt capability - enabling concurrent multi-protocol connectivity to sensors, displays, and fieldbus networks without software bit-banging overhead in the R5F101FKAFP#X0.
R5F101FKAFP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 44-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:
- 31
- Program Memory Size:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 24K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 10x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101FKAFP#X0 FAQ
1.How can I place an order for R5F101FKAFP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101FKAFP#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 R5F101FKAFP#X0 reliable?
The price and inventory of R5F101FKAFP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101FKAFP#X0 is usually 5 days.
3.What payment methods are accepted for R5F101FKAFP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101FKAFP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101FKAFP#X0?
R5F101FKAFP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101FKAFP#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 R5F101FKAFP#X0?
For technical support, including R5F101FKAFP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101FKAFP#X0 requirements.
6.How does Aetrix verify that R5F101FKAFP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101FKAFP#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 R5F101FKAFP#X0 meets industry standards.
7.What is the process for return or replacement of R5F101FKAFP#X0?
All R5F101FKAFP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101FKAFP#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 R5F101FKAFP#X0 part is unused and in its original packaging.
Return procedure for R5F101FKAFP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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