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Renesas R5F101EADNA#U0
- Part No.:
- R5F101EADNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
R5F101EADNA#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 40HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,236
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Product details
Overview
R5F101EADNA#U0 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB data flash, 2 KB RAM, ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD), and integrated peripherals including 10-bit ADC (12-channel), UART, I²C, CSI, 16-bit timers, and real-time clock - deployed in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the R5F101EADNA#U0 datasheet, R5F101EADNA#U0 pinout, R5F101EADNA#U0 application, or R5F101EADNA#U0 equivalent, key selection criteria include its 40-pin HWQFN-0.5mm package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and support for SNOOZE mode for low-latency wake-up from ultra-low-power states.
Technical Context
The R5F101EADNA#U0 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 integrates a 12-bit interval timer, calendar-based real-time clock with alarm and correction, and watchdog timer with dedicated low-speed oscillator.
Peripherals include up to 12-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 2–4 UART/LIN channels, 3–10 I²C/Simplified I²C channels, and 2–8 CSI (SPI-compatible) channels - all configurable via register-based control without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic timing and compact code density for resource-constrained embedded control. |
| Flash Memory | 64 KB code flash (1 KB block size); supports self-programming with boot swap and flash shield window for secure firmware updates. |
| Data Flash | None (R5F101x series); eliminates data retention concerns but requires external EEPROM or FRAM for nonvolatile parameter storage. |
| RAM | 2 KB on-chip RAM; sufficient for real-time control stacks, ISR contexts, and small buffers in sensor interface applications. |
| Power Consumption | 66 μA/MHz active current; reduces battery drain in always-on monitoring systems and extends operational life in energy-harvesting designs. |
| Operating Voltage | 1.6 V to 5.5 V single supply; allows direct interfacing with 1.8 V, 3.3 V, and 5 V peripherals without level-shifting circuitry. |
| Temperature Range | -40°C to +85°C (industrial grade D); validated for deployment in factory automation, HVAC controllers, and outdoor metering equipment. |
Pinout & Package
Package: 40-pin HWQFN (6 × 6 mm, 0.5-mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3 (MSL3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; thermal pad improves heat dissipation in continuous operation. |
| P00–P07 | General-purpose I/O port | Configurable as N-ch open-drain (6 V tolerant), TTL input, or pull-up enabled; supports different-potential interfaces (1.8/2.5/3 V). |
| P10/P11 | SPI/I²C/UART multiplexed pins | Shared SCK00/SCL00 and SI00/RxD0/SDA00 functions enable flexible peripheral routing without PCB redesign. |
| P20–P27 | Analog input / reference pins | P20/P21 serve as AVREFP/AVREFM; P20–P27 support up to 12 ADC channels with internal temperature sensor and 1.45 V reference. |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits for reliable power-on and brown-out recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP/HALT modes | Enables sub-μA system sleep states while retaining RAM content and RTC operation - critical for battery lifetime in remote sensors. |
| Background Data Flash Operation (BGO) | Not applicable (R5F101x lacks data flash); simplifies firmware design by removing BGO interrupt management overhead. |
| On-chip debug interface | Single-wire debug (SWD) support enables in-circuit programming and real-time trace without dedicated debug headers or extra pins. |
| Real-time clock with calendar | 99-year calendar, alarm, and clock correction eliminate need for external RTC ICs and reduce BOM count in time-stamped logging applications. |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations accelerate motor control algorithms and digital filtering tasks. |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and air quality data at 10-second intervals with wireless transmission every 5 minutes. IC Role / Device Role / Timing Role: Primary MCU managing sensor acquisition, ADC conversion, RTC-timed wake-up, low-power sleep transitions, and UART-to-Bluetooth bridge control. Use Value: 0.57 μA STOP mode with RTC active extends 2×AA battery life beyond 5 years; 12-channel ADC supports multi-sensor analog front-end without external MUX. |
Use Scenario: Wall-mounted HVAC controller with touch interface, local display, and cloud connectivity via Wi-Fi module. IC Role / Device Role / Timing Role: System orchestrator handling button debouncing, display refresh, temperature regulation loop (PID), and serial command parsing for Wi-Fi co-processor. Use Value: 40-pin HWQFN provides sufficient I/O for capacitive touch keys, segment LCD drivers, and multiple UART/I²C buses; 1.6–5.5 V operation tolerates wide input from AC-DC adapter or backup coin cell. |
| Programmable Logic Relay | Energy Meter Communication Module |
Use Scenario: DIN-rail mounted relay module executing user-defined ladder logic for machine safety interlocks and process sequencing. IC Role / Device Role / Timing Role: Real-time deterministic controller executing logic scans at ≤10 ms intervals, driving opto-isolated outputs and monitoring dry-contact inputs. Use Value: RL78's 3-stage pipeline ensures consistent instruction timing; 16-bit timers with capture/compare support precise pulse-width measurement for encoder feedback or PWM output. |
Use Scenario: Add-on communication board for legacy electromechanical meters, enabling DLMS/COSEM over PLC or RF mesh networks. IC Role / Device Role / Timing Role: Protocol gateway translating meter pulse counts and register reads into standardized DLMS frames via UART or SPI to modem IC. Use Value: Integrated UART/LIN and CSI peripherals eliminate external transceivers; SNOOZE mode allows fast wake-up (<;10 μs) to service PLC burst transmissions without missing frames. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100EADNA#U0 | Same 40-pin HWQFN package and 64 KB flash, but includes 4 KB data flash and supports background data flash rewriting (BGO). | Preferred where field-upgradable calibration tables or configuration parameters must be stored nonvolatively without external memory. | Select R5F100EADNA#U0 if data flash persistence is required; otherwise R5F101EADNA#U0 reduces cost and firmware complexity. |
| R5F101EAFA#V0 | Same core, memory, and peripherals, but in 44-pin LQFP-0.8 mm package with exposed pad; higher pin count enables more GPIO and peripheral remapping flexibility. | Better suited for prototyping or applications requiring additional debug signals, external crystal load caps, or future expansion headers. | Choose R5F101EAFA#V0 when PCB layout allows larger footprint and extra I/O is needed; R5F101EADNA#U0 optimizes space-constrained industrial modules. |
Compared with R5F100EADNA#U0, the R5F101EADNA#U0 removes data flash to lower cost and simplify firmware, while compared with R5F101EAFA#V0 it trades pin count and package size for compactness - making it optimal for volume production of space- and cost-sensitive industrial controls.
Availability
R5F101EADNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and programmable logic relays requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.
Supply support for R5F101EADNA#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 industrial, automotive, and IoT markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering high integration, robust peripheral sets, and toolchain maturity for rapid development of industrial control and sensing products.
FAQ
What is the maximum operating frequency of the R5F101EADNA#U0?
The R5F101EADNA#U0 supports up to 32 MHz operation using the high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and -20 to +85°C. Its minimum instruction execution time is 0.03125 μs at this frequency, delivering 41 DMIPS performance for real-time control tasks.
Does the R5F101EADNA#U0 include on-chip data flash memory?
No, the R5F101EADNA#U0 does not include on-chip data flash memory. As indicated by the "101" in its part number per Renesas documentation, this variant belongs to the data-flash-less series. Designers requiring nonvolatile parameter storage must use external EEPROM, FRAM, or utilize the code flash with wear-leveling firmware.
What package type and pin count does the R5F101EADNA#U0 use?
The R5F101EADNA#U0 uses a 40-pin HWQFN package (6 × 6 mm, 0.5-mm pitch) with an exposed thermal pad. The "NA" in the part number explicitly denotes HWQFN, and "#U0" indicates tray packaging - confirmed in Renesas' RL78/G13 datasheet Table 1-1 for 40-pin devices.
What is the operating temperature range for the R5F101EADNA#U0?
The R5F101EADNA#U0 is rated for industrial operation from -40°C to +85°C, as designated by the "D" suffix in its part number. This qualification ensures reliability in factory automation, building controls, and outdoor metering environments where ambient extremes are common.
Which communication interfaces are integrated into the R5F101EADNA#U0?
The R5F101EADNA#U0 integrates UART/LIN (up to 4 channels), I²C/Simplified I²C (up to 10 channels), and CSI (SPI-compatible, up to 8 channels). All are register-configurable and share pins with GPIO, allowing flexible peripheral assignment without hardware changes.
R5F101EADNA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 40-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:
- 28
- 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 9x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101EADNA#U0 FAQ
1.How can I place an order for R5F101EADNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101EADNA#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 R5F101EADNA#U0 reliable?
The price and inventory of R5F101EADNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101EADNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101EADNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101EADNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101EADNA#U0?
R5F101EADNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101EADNA#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 R5F101EADNA#U0?
For technical support, including R5F101EADNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101EADNA#U0 requirements.
6.How does Aetrix verify that R5F101EADNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101EADNA#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 R5F101EADNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101EADNA#U0?
All R5F101EADNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101EADNA#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 R5F101EADNA#U0 part is unused and in its original packaging.
Return procedure for R5F101EADNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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