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Renesas R5F101BFDNA#U0
- Part No.:
- R5F101BFDNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F101BFDNA#U0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,120
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Product details
Overview
R5F101BFDNA#U0 from Renesas is a 32-pin HWQFN-packaged RL78/G13 16-bit microcontroller with no data flash, 64 KB code flash, 4 KB RAM, and operation from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, supports ultra-low-power HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), and integrates 16-bit timers, 10-bit ADC (26 channels), UART/I²C/CSI interfaces, and real-time clock - used in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101BFDNA#U0 datasheet, R5F101BFDNA#U0 pinout, R5F101BFDNA#U0 application, or R5F101BFDNA#U0 equivalent, key selection criteria include its 32-pin HWQFN-0.5mm package, absence of data flash memory, -40°C to +85°C industrial temperature grade (D), and support for background data flash programming via external library - critical for firmware-upgradable embedded control nodes requiring minimal footprint and deterministic low-power operation.
Technical Context
The R5F101BFDNA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It uses a single-supply 1.6–5.5 V rail and includes on-chip power-on reset, voltage detector (14-level LVD), and dedicated low-speed oscillator for watchdog operation.
Its peripheral set includes up to 16× 16-bit timers, one 12-bit interval timer, calendar-based RTC with alarm/correction, 10-bit ADC with internal 1.45 V reference and temperature sensor, and serial interfaces: 2–4 UART/LIN, 3–10 I²C/Simplified I²C, and 2–8 CSI channels - all mapped to 29 programmable I/O pins with N-ch open-drain, TTL input, and pull-up options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 16-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Max Performance | 41 DMIPS at 32 MHz using high-speed on-chip oscillator (±1.0% accuracy) |
| Memory | 64 KB code flash (1 KB block size), 4 KB RAM, no data flash |
| Power Modes | HALT (66 μA/MHz), STOP (0.57 μA w/ RTC+LVD active), SNOOZE |
| Analog Peripherals | 10-bit ADC with 26 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Timers & RTC | Up to 16× 16-bit timers, 1× 12-bit interval timer, 1× calendar RTC (99-year range, alarm, correction) |
| Serial Interfaces | 2–4 UART/LIN, 3–10 I²C/Simplified I²C, 2–8 CSI - all configurable per pin mapping |
Pinout & Package
Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Single 1.6–5.5 V supply; multiple VSS pins ensure noise immunity and thermal dissipation |
| P00–P07 | General-purpose I/O | Bi-directional with N-ch open-drain option, TTL input buffer, and programmable pull-up resistors |
| P10–P17 | Multiplexed peripheral I/O | Support SCK00/SCL00, SI00/RxD0/TOOLRxD/SDA00, SO00/TxD0/TOOLTxD, etc. - shared with debug interface |
| P20–P27 | Analog/digital I/O | ANI0–ANI7 inputs (ADC), AVREFP/AVREFM references, and digital functions including key interrupt |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to POR and LVD circuits |
| CLKP/CLKM | External crystal connection | Supports 32.768 kHz crystal for RTC or high-frequency crystals up to 20 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.57 μA in STOP mode with RTC + LVD active enables multi-year battery life in endpoint devices |
| Self-programmable flash | Boot swap and flash shield window enable secure field firmware updates without external programmer |
| Background data rewriting | Not applicable - R5F101BFDNA#U0 has no data flash memory (per part number coding "101") |
| Different-potential interface | I/O pins tolerate 1.8 V / 2.5 V / 3.3 V logic levels, simplifying interconnect with mixed-voltage subsystems |
| On-chip debug support | Fully integrated on-chip debug circuit enables real-time trace, breakpoint, and memory inspection via single-wire SWD |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Battery-powered gas/water meter with pulse counting, pressure sensing, and RF telemetry. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-timed wake-up, UART-to-LoRaWAN bridge, and secure flash updates. Use Value: 0.57 μA STOP mode extends 10-year battery life; 26-channel ADC supports multi-sensor fusion without external mux. |
Use Scenario: DIN-rail mounted temperature/humidity/vibration monitor in factory automation. IC Role / Device Role / Timing Role: Real-time data acquisition hub with 10-bit ADC, RTC timestamping, and dual UART for Modbus RTU and debug logging. Use Value: 41 DMIPS handles sensor fusion algorithms; -40°C to +85°C rating ensures reliability in uncontrolled enclosures. |
| Home Appliance Control | Medical Wearable Monitor |
|
Use Scenario: Low-cost washing machine mainboard with motor control, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central MCU executing PID motor control, reading analog pressure/temperature sensors, and driving LED display via buzzer output controller. Use Value: Integrated buzzer output and key interrupt reduce BOM count; 64 KB flash accommodates safety-certified firmware. |
Use Scenario: Portable ECG patch with analog front-end, Bluetooth LE interface, and motion artifact compensation. IC Role / Device Role / Timing Role: Signal processor acquiring 10-bit ECG samples, applying digital filtering, and transmitting timestamped frames via UART to BLE SoC. Use Value: On-chip temperature sensor calibrates ADC offset drift; SNOOZE mode minimizes current during idle intervals between measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100BFDNA#U0 | Same package and pinout; includes 4 KB data flash and self-programming BGO capability | Required where over-the-air parameter storage or background flash rewriting is needed | Select when persistent configuration storage or field-upgradable calibration tables are mandatory |
| R5F101BGDNA#U0 | Same 32-pin HWQFN package, but with 128 KB code flash and 12 KB RAM - no data flash | Suitable for more complex control algorithms or larger protocol stacks (e.g., full Modbus TCP) | Choose when additional code space or RAM is required without adding data flash overhead |
Compared with R5F101BFDNA#U0, R5F100BFDNA#U0 adds data flash for nonvolatile parameter storage at the cost of slightly higher active current, while R5F101BGDNA#U0 provides 2× code flash and 3× RAM for enhanced firmware scalability - both retain identical low-power modes, peripheral sets, and industrial temperature rating.
Availability
R5F101BFDNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and home appliance control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for R5F101BFDNA#U0 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 embedded applications - balancing performance, integration, and energy efficiency for battery-operated and thermally constrained designs.
FAQ
What is the flash memory configuration of the R5F101BFDNA#U0?
The R5F101BFDNA#U0 contains 64 KB of code flash memory and 4 KB of RAM, with no data flash memory. This is confirmed by the "101" in the part number, which denotes zero data flash per Renesas RL78/G13 naming convention. The code flash supports block erase (1 KB), security lock, and self-programming with boot swap functionality - enabling secure firmware updates in the R5F101BFDNA#U0.
Does the R5F101BFDNA#U0 support real-time clock functionality?
Yes, the R5F101BFDNA#U0 integrates a full-featured real-time clock (RTC) with calendar support for 99 years, alarm generation, and hardware clock correction. It operates independently in STOP mode with only 0.57 μA current draw when paired with the on-chip LVD, making it suitable for time-stamped logging and scheduled wake-up in battery-powered applications using the R5F101BFDNA#U0.
What package type and pin count does the R5F101BFDNA#U0 use?
The R5F101BFDNA#U0 uses a 32-pin HWQFN package (5 × 5 mm, 0.5 mm pitch) with an exposed thermal pad. This is confirmed by the "B" in the part number (32-pin), "NA" suffix (HWQFN), and "#U0" packaging code (tray delivery). The package supports reflow soldering, offers excellent thermal performance, and is compatible with standard 0.5 mm pitch PCB assembly processes for the R5F101BFDNA#U0.
What is the operating temperature range for the R5F101BFDNA#U0?
The R5F101BFDNA#U0 is rated for industrial operation from -40°C to +85°C, indicated by the "D" in its part number. It does not support the extended -40°C to +105°C range (denoted by "G") or consumer-grade -40°C to +85°C with different qualification (denoted by "A"). This makes the R5F101BFDNA#U0 appropriate for enclosed industrial controls, HVAC systems, and other environments where ambient temperatures remain within this validated industrial envelope.
Which communication interfaces are available on the R5F101BFDNA#U0?
The R5F101BFDNA#U0 supports UART/LIN (up to 4 channels), I²C/Simplified I²C (up to 10 channels), and CSI (up to 8 channels), all multiplexed across its 29 general-purpose I/O pins. These interfaces operate across the full 1.6–5.5 V supply range and support clock stretching, multi-master arbitration, and automatic baud rate detection - enabling robust connectivity for sensor networks, human-machine interfaces, and host MCU communication in designs using the R5F101BFDNA#U0.
R5F101BFDNA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- Series:
- RL78/G13
- Packaging:
- Tray
- 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:
- 22
- 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 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101BFDNA#U0 FAQ
1.How can I place an order for R5F101BFDNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101BFDNA#U0 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 R5F101BFDNA#U0 reliable?
The price and inventory of R5F101BFDNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101BFDNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101BFDNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101BFDNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101BFDNA#U0?
R5F101BFDNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101BFDNA#U0 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 R5F101BFDNA#U0?
For technical support, including R5F101BFDNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101BFDNA#U0 requirements.
6.How does Aetrix verify that R5F101BFDNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101BFDNA#U0 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 R5F101BFDNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101BFDNA#U0?
All R5F101BFDNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101BFDNA#U0, 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 R5F101BFDNA#U0 part is unused and in its original packaging.
Return procedure for R5F101BFDNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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