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Renesas R5F101BADNA#U0
- Part No.:
- R5F101BADNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F101BADNA#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,293
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Product details
Overview
R5F101BADNA#U0 from Renesas is a 32-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 64 KB flash, 4 KB data flash, 4 KB RAM, 16 MHz max CPU frequency, and industrial-grade -40°C to +85°C operation. It integrates 12-bit ADC (10-bit mode), RTC, UART, I²C, SPI, 16-bit timers, and ultra-low-power STOP/HALT modes for embedded control in battery-powered and space-constrained systems.
For engineers reviewing the R5F101BADNA#U0 datasheet, R5F101BADNA#U0 pinout, R5F101BADNA#U0 application, or R5F101BADNA#U0 equivalent, key selection criteria include its 32-pin HWQFN-0.5mm-pitch package, absence of on-chip data flash (R5F101x series), 1.6–5.5 V supply range, and support for SNOOZE-mode peripheral wake-up without CPU intervention.
Technical Context
The R5F101BADNA#U0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz) down to 30.5 μs (32.768 kHz). Its memory subsystem includes 64 KB code flash with 1 KB block erase, no data flash (per R5F101x family designation), and 4 KB SRAM.
Peripherals include up to 16-channel 16-bit timer array, single-channel 12-bit interval timer, calendar RTC with alarm/correction, 10-bit A/D converter with up to 26 inputs, and three serial interfaces (CSI, UART/LIN, I²C) - all configurable via dedicated SFRs and supported by DMA channels for efficient data movement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline; enables deterministic real-time response and low-energy per instruction. |
| Max Operating Frequency | 16 MHz (via high-speed on-chip oscillator); delivers 41 DMIPS at 32 MHz, scaled linearly to ~20.5 DMIPS at 16 MHz. |
| Flash Memory | 64 KB code flash with 1 KB erase blocks; supports self-programming and boot-swap for firmware updates. |
| RAM Size | 4 KB on-chip SRAM; sufficient for real-time control stacks, sensor buffers, and communication protocol state machines. |
| A/D Converter | 10-bit resolution, 26-channel input multiplexer, internal 1.45 V reference; suitable for precision analog sensing without external references. |
| Operating Voltage | 1.6 V to 5.5 V single supply; enables direct interface with 1.8 V, 3.3 V, and 5 V peripherals without level shifters. |
| Temperature Range | -40°C to +85°C (Industrial D-grade); qualified for factory automation, HVAC, and industrial IoT edge nodes. |
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 | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; thermal pad improves heat dissipation in compact layouts. |
| P00–P07 | General-purpose I/O port | 8-bit bidirectional port with N-ch open-drain option, TTL input buffer, and programmable pull-up; supports 1.8/2.5/3 V logic interfacing. |
| P10–P17 | Multi-function I/O port | Includes SCK00/SCL00, SI00/RxD0, SO00/TxD0, and TOOLRxD; enables dual-role SPI/I²C and debug UART over shared pins. |
| P20–P27 | Analog input / AVREFP/AVREFM | ADC channel inputs with dedicated analog reference pins; allows ratiometric or absolute voltage measurement with external sensor biasing. |
| RESET | Active-low reset input | Accepts external reset signal; internally tied to on-chip POR and LVD circuits for robust power-on and brownout recovery. |
| CLKP/CLKM | Crystal oscillator terminals | Supports 32.768 kHz crystal for RTC; optional connection to external clock source or internal oscillator bypass. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA typical current draw with RTC + LVD active; extends battery life in metering and remote sensor applications. |
| SNOOZE mode operation | Permits UART/I²C/CSI peripherals to operate and generate interrupts while CPU remains halted; reduces system latency without full wake-up overhead. |
| On-chip debug interface | Fully integrated with E1/E20 emulators; enables non-intrusive breakpoints, real-time variable watch, and flash programming via single-wire SWD. |
| Hardware multiplier/divider | 16×16→32-bit multiply, 32÷32→32-bit divide, and MAC operations executed in fixed cycles; accelerates motor control and digital filtering. |
| Background data flash rewrite | BGO (Background Operation) allows program execution from flash while rewriting data flash; eliminates interrupt latency during parameter storage. |
Applications
| Smart Thermostats | Industrial Sensor Nodes |
|---|---|
Use Scenario: Local temperature/humidity control with wireless reporting and user interface. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, display driver, button scan, and sub-GHz RF transceiver timing. Use Value: 64 KB flash accommodates BLE stack + application firmware; STOP mode extends AA-battery life beyond 2 years. |
Use Scenario: Distributed vibration/pressure monitoring in factory machinery with CAN or RS-485 backhaul. IC Role / Device Role / Timing Role: Edge preprocessing unit performing FFT windowing, threshold detection, and timestamped event logging via RTC. Use Value: 10-bit ADC with 26 channels supports multi-sensor fusion; SNOOZE mode enables UART-triggered wake-up for scheduled data bursts. |
| Home Appliance Control | Energy Metering Modules |
Use Scenario: Motor speed regulation and safety interlock in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Real-time PWM generator with fault protection, current sensing, and thermal shutdown coordination. Use Value: 16-bit timer array provides independent 3-phase PWM outputs; 1.6–5.5 V operation simplifies power design across 3.3 V MCU and 5 V gate drivers. |
Use Scenario: Tamper-resistant kWh measurement with pulse output and secure parameter storage. IC Role / Device Role / Timing Role: Metrology co-processor handling metrology IC SPI reads, tariff scheduling, and secure EEPROM emulation using flash shield window. Use Value: Flash security features prevent unauthorized firmware modification; RTC calendar ensures accurate billing period alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100BADNA#U0 | Same 32-pin HWQFN package and core, but includes 4 KB data flash and 4 KB RAM (vs. R5F101BADNA#U0's 4 KB RAM only). | Preferred where frequent non-volatile parameter logging is required (e.g., calibration history, usage counters). | Select R5F100BADNA#U0 when data flash endurance (1M cycles) and background rewrite are mandatory. |
| R5F101BAFNA#U0 | Identical package and memory map, but rated for -40°C to +105°C (G-grade) instead of D-grade (-40°C to +85°C). | Required for under-hood automotive or high-ambient industrial enclosures exceeding 85°C ambient. | Choose R5F101BAFNA#U0 only if extended temperature qualification is specified in the end-equipment safety plan. |
Compared with R5F101BADNA#U0, R5F100BADNA#U0 adds data flash functionality at identical cost and footprint, while R5F101BAFNA#U0 trades industrial temperature margin for the same functional set - making R5F101BADNA#U0 optimal for cost-sensitive, thermally moderate embedded control.
Availability
R5F101BADNA#U0 is available at Aetrix Electronics and suitable for smart thermostats, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for R5F101BADNA#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 enterprise markets.
The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - delivering optimized energy efficiency, rich peripheral integration, and toolchain maturity for rapid development of industrial controls and consumer electronics.
FAQ
What is the maximum operating frequency of the R5F101BADNA#U0?
The R5F101BADNA#U0 supports a maximum CPU frequency of 16 MHz using the high-speed on-chip oscillator. This yields approximately 20.5 DMIPS performance. The oscillator accuracy is ±1.0% across 1.8–5.5 V supply and -40°C to +85°C ambient, enabling reliable timing without external crystals in many applications. Higher frequencies (up to 32 MHz) require external clock sources not supported by the R5F101BADNA#U0 variant.
Does the R5F101BADNA#U0 include on-chip data flash memory?
No, the R5F101BADNA#U0 does not include on-chip data flash memory. Per Renesas' part numbering convention, the "101" prefix indicates data flash omission (in contrast to "100" variants like R5F100BADNA#U0 which include 4 KB data flash). All R5F101x devices rely on code flash for parameter storage or external EEPROM/FRAM for high-endurance logging.
What package type and pin count does the R5F101BADNA#U0 use?
The R5F101BADNA#U0 uses a 32-pin HWQFN package (5 mm × 5 mm, 0.5 mm pitch) with an exposed thermal pad. This package is designated by the "NA" suffix in the part number and is supplied in trays (#U0). It provides compact board area, excellent thermal performance, and compatibility with standard reflow profiles for high-volume manufacturing.
What is the operating temperature range for the R5F101BADNA#U0?
The R5F101BADNA#U0 is rated for industrial operation from -40°C to +85°C (D-grade). This qualification meets JEDEC JESD22-A104 reliability standards and supports deployment in factory automation, building controls, and outdoor equipment where ambient temperatures remain within this envelope. It is not rated for automotive under-hood or extended industrial environments above +85°C.
Which serial communication interfaces are supported by the R5F101BADNA#U0?
The R5F101BADNA#U0 supports three serial interface types: CSI (Renesas' SPI-compatible interface), UART/LIN (with LIN bus physical layer compliance), and I²C/Simplified I²C. These are distributed across P1x and P3x ports, with up to two CSI channels, two UART channels, and three I²C channels available - enabling concurrent communication with displays, sensors, and host controllers without external bridge ICs.
R5F101BADNA#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:
- 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 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F101BADNA#U0 FAQ
1.How can I place an order for R5F101BADNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101BADNA#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 R5F101BADNA#U0 reliable?
The price and inventory of R5F101BADNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101BADNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101BADNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101BADNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101BADNA#U0?
R5F101BADNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101BADNA#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 R5F101BADNA#U0?
For technical support, including R5F101BADNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101BADNA#U0 requirements.
6.How does Aetrix verify that R5F101BADNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101BADNA#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 R5F101BADNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101BADNA#U0?
All R5F101BADNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101BADNA#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 R5F101BADNA#U0 part is unused and in its original packaging.
Return procedure for R5F101BADNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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