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Renesas R5F101FAAFP#X0
- Part No.:
- R5F101FAAFP#X0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
R5F101FAAFP#X0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,799
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Product details
Overview
R5F101FAAFP#X0 from Renesas is a 44-pin LQFP, 32-bit RL78/G13 microcontroller with 96 KB flash, 8 KB RAM, and no data flash memory, operating from 1.6 V to 5.5 V at up to 32 MHz (41 DMIPS), featuring ultra-low-power HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), integrated 10-bit ADC (24 channels), RTC, and multiple serial interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101FAAFP#X0 datasheet, R5F101FAAFP#X0 pinout, R5F101FAAFP#X0 application, or R5F101FAAFP#X0 equivalent, key selection criteria include its 44-pin LQFP-0.8mm package, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (D-grade), and compatibility with Renesas' RL78 IAR/e2 studio toolchain for low-power firmware development.
Technical Context
The R5F101FAAFP#X0 implements the RL78 CPU core with 3-stage CISC pipeline, supporting variable instruction execution time (0.03125 μs @32 MHz to 30.5 μs @32.768 kHz) and 1 MB address space. It integrates a high-accuracy ±1.0% on-chip oscillator (selectable 1–32 MHz), 12-bit interval timer, and real-time clock with calendar/alarm functions.
Peripheral integration includes 2–4 DMA channels, 8–16 × 16-bit timers, UART/LIN-capable serial interfaces (2–4 channels), I²C (3–10 channels), CSI (2–8 channels), and an 8/10-bit ADC with internal 1.45 V reference and temperature sensor - all optimized for deterministic real-time control in resource-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 32-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Operating Frequency | 32 MHz (41 DMIPS), supported by ±1.0% high-accuracy on-chip oscillator |
| Memory Configuration | 96 KB code flash, 8 KB RAM, 0 KB data flash - no background rewriting capability |
| Power Consumption | 66 μA/MHz active; 0.57 μA in STOP mode with RTC + LVD enabled |
| Analog Peripherals | 10-bit ADC with 24 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Serial Interfaces | 2× UART/LIN, 3× I²C, 2× CSI - all configurable for sensor hub and communication gateway roles |
| Operating Temperature | -40°C to +85°C (D-grade industrial qualification) |
| Supply Voltage Range | 1.6 V to 5.5 V - supports direct Li-ion, 3.3 V, and 5 V rail operation without external regulators |
Pinout & Package
Package: 44-pin LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support separate analog/digital supply routing and noise isolation |
| P00–P07, P10–P17, P20–P27, P30–P37, P40–P43 | General-purpose I/O ports | 44 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 logic interfacing |
| P10/SCK00/SCL00 | Serial clock / I²C clock | Shared function pin enabling dual-role SPI/I²C master/slave operation on same port |
| P11/SI00/RxD0/TOOLRxD/SDA00 | Serial input / UART receive / debug RX / I²C data | Multi-function pin supporting bootloader, debug communication, and peripheral interface sharing |
| P20/ANI0/AVREFP | Analog input / ADC reference positive | Enables precision single-ended or differential ADC measurements using internal or external reference |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits for autonomous fault recovery |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA retention with RTC + LVD active - enables >10-year battery life in periodic wake-up sensor nodes |
| On-chip high-accuracy oscillator | ±1.0% stability over -20°C to +85°C at 32 MHz - eliminates external crystal and saves BOM cost and PCB area |
| Integrated temperature sensor | Calibrated silicon sensor with ±3°C accuracy - enables thermal monitoring without external components |
| Real-time clock with calendar | 99-year calendar, alarm, and auto-correction - supports time-stamped logging and scheduled operations |
| LIN bus support in UART | Hardware LIN 2.2/SAE J2602 compliance via UART module - simplifies automotive body electronics integration |
| On-chip voltage detector (LVD) | 14-level programmable threshold with interrupt/reset options - prevents erratic behavior during brown-out conditions |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly pulse counting, temperature compensation, and RF telemetry. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, managing RTC-based reporting intervals, and driving sub-GHz transceiver via SPI. Use Value: 0.57 μA STOP mode extends 2xAA battery life beyond 12 years; integrated ADC and temperature sensor eliminate 3 external components. |
Use Scenario: Wireless vibration/temperature monitor mounted on motor housing with 10-minute sampling and LoRaWAN upload. IC Role / Device Role / Timing Role: Low-power acquisition engine capturing analog sensor data, performing FFT preprocessing, and scheduling transmission windows via RTC alarm. Use Value: 66 μA/MHz active current minimizes energy per sample; LIN-capable UART enables direct connection to legacy industrial PLCs. |
| Home Appliance Control | Medical Wearable Monitor |
Use Scenario: Smart HVAC remote with touch UI, ambient sensing, and IR transmission. IC Role / Device Role / Timing Role: System-on-chip managing capacitive touch buttons, reading thermistor/humidity sensors, and generating NEC IR codes. Use Value: 24-channel ADC supports multi-sensor fusion; SNOOZE mode reduces average current during UI idle periods. |
Use Scenario: ECG patch with dry-electrode front-end, motion artifact correction, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal conditioning and digital processing unit acquiring raw analog leads, applying digital filters, and buffering data for BLE transmission. Use Value: On-chip 1.45 V reference ensures consistent ADC gain across voltage droop; 8 KB RAM accommodates real-time FIR filter coefficients and buffer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100FAAFP#X0 | Same 44-pin LQFP package and core, but includes 4 KB data flash and self-programming capability | Required where field firmware updates or parameter storage (e.g., calibration tables) are needed | Select when non-volatile parameter retention or OTA update capability is mandatory |
| RL78/G14 R5F104BAANA#U0 | 24-pin HWQFN, 128 KB flash, 16 KB RAM, includes data flash and enhanced security features | Better suited for space-constrained designs needing higher memory and secure boot | Choose for compact footprint and advanced security; not pin-compatible |
Compared with R5F101FAAFP#X0, R5F100FAAFP#X0 adds data flash for configuration storage but increases cost and complexity, while RL78/G14 offers higher integration at the expense of package size and pin count - making R5F101FAAFP#X0 optimal for cost-sensitive, battery-powered applications requiring only code flash and minimal peripherals.
Availability
R5F101FAAFP#X0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor networks, and home appliance control requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.
Supply support for R5F101FAAFP#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 industrial, automotive, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, energy efficiency, and peripheral richness for next-generation edge devices.
FAQ
What is the maximum operating frequency and corresponding DMIPS rating for the R5F101FAAFP#X0?
The R5F101FAAFP#X0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This rating is achieved using the high-speed on-chip oscillator at full speed, and the core maintains deterministic timing across all power modes including HALT and STOP - critical for real-time control loops in the R5F101FAAFP#X0's target applications.
Does the R5F101FAAFP#X0 include on-chip data flash memory?
No, the R5F101FAAFP#X0 does not include data flash memory. As indicated by the "101" prefix in its part number (per Renesas' naming convention), this variant provides only code flash (96 KB) and SRAM (8 KB). Applications requiring non-volatile parameter storage must use external EEPROM or select the "100" series (e.g., R5F100FAAFP#X0) which includes 4 KB data flash.
What package type and pin count does the R5F101FAAFP#X0 use?
The R5F101FAAFP#X0 uses a 44-pin LQFP package (10 × 10 mm, 0.8-mm pitch), identified by the "FP" suffix in Renesas' package coding. The "#X0" suffix confirms embossed tape packaging - suitable for automated SMT assembly. This package provides full I/O access and thermal performance appropriate for industrial ambient temperatures up to +85°C.
Which serial communication interfaces are integrated into the R5F101FAAFP#X0?
The R5F101FAAFP#X0 integrates two UART/LIN modules (supporting LIN 2.2), three I²C interfaces, and two CSI (Simplified SPI) channels. All are independently configurable and share no dedicated pins - enabling concurrent use in multi-peripheral systems such as sensor hubs or communication gateways where the R5F101FAAFP#X0 serves as central coordinator.
What is the operating temperature range and industrial qualification grade for the R5F101FAAFP#X0?
The R5F101FAAFP#X0 is qualified for industrial operation from -40°C to +85°C and carries the "D" grade designation per Renesas' part numbering system. This certification covers full electrical performance, reliability testing, and extended temperature validation - confirming suitability for deployment in factory automation, building controls, and outdoor metering where the R5F101FAAFP#X0 must maintain functionality under thermal stress.
R5F101FAAFP#X0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 44-LQFP
- Series:
- RL78/G13
- Packaging:
- Bulk
- 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
R5F101FAAFP#X0 FAQ
1.How can I place an order for R5F101FAAFP#X0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101FAAFP#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 R5F101FAAFP#X0 reliable?
The price and inventory of R5F101FAAFP#X0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101FAAFP#X0 is usually 5 days.
3.What payment methods are accepted for R5F101FAAFP#X0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101FAAFP#X0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101FAAFP#X0?
R5F101FAAFP#X0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101FAAFP#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 R5F101FAAFP#X0?
For technical support, including R5F101FAAFP#X0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101FAAFP#X0 requirements.
6.How does Aetrix verify that R5F101FAAFP#X0 is sourced from the original manufacturer or authorized distributors?
All R5F101FAAFP#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 R5F101FAAFP#X0 meets industry standards.
7.What is the process for return or replacement of R5F101FAAFP#X0?
All R5F101FAAFP#X0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101FAAFP#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 R5F101FAAFP#X0 part is unused and in its original packaging.
Return procedure for R5F101FAAFP#X0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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