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Renesas R5F101BDDNA#U0
- Part No.:
- R5F101BDDNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F101BDDNA#U0.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,671
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Product details
Overview
R5F101BDDNA#U0 from Renesas is a 32-pin RL78/G13 16-bit microcontroller with 48 KB flash memory, 4 KB data flash, and 2 KB RAM, operating at up to 32 MHz with 41 DMIPS performance. It features ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), integrated 10-bit ADC (26 channels), real-time clock, UART/SPI/I²C interfaces, and operates across -40°C to +85°C for industrial applications.
For engineers reviewing the R5F101BDDNA#U0 datasheet, R5F101BDDNA#U0 pinout, R5F101BDDNA#U0 application, or R5F101BDDNA#U0 equivalent, key selection criteria include its HWQFN-32 package, absence of on-chip data flash (confirmed by "101" suffix), industrial temperature grade (D), and compatibility with Renesas' RL78 development ecosystem including CS+ and e² studio.
Technical Context
The R5F101BDDNA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory map includes 1 MB address space, with flash organized in 1 KB blocks and security features like block erase prohibition.
Peripherals include 8–16 channels of 16-bit timer, 1-channel 12-bit interval timer, 1-channel calendar RTC with alarm and correction, 1-channel watchdog timer, and serial interfaces: 2–8 CSI (SPI-compatible), 2–4 UART/LIN, and 3–10 I²C channels - all configurable via dedicated SFRs and interrupt vectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline and 1 MB address space |
| Max Operating Frequency | 32 MHz (41 DMIPS), with selectable high-speed on-chip oscillator (±1.0% accuracy) |
| Flash Memory | 48 KB code flash, 1 KB block size, self-programming with boot swap and flash shield window |
| Data Flash | Not integrated (R5F101x series excludes data flash per datasheet Note 2) |
| RAM | 2 KB on-chip RAM, used by flash library starting at address FF300H |
| ADC | 10-bit resolution, 26 analog input channels, internal 1.45 V reference and temperature sensor |
| Operating Voltage | 1.6 V to 5.5 V single supply, with on-chip POR and 14-level LVD |
Pinout & Package
Package: HWQFN-32 (5 × 5 mm, 0.5 mm pitch), moisture sensitivity level MSL3, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs support noise immunity; decoupling required per datasheet layout guidelines |
| P00–P07 | General-purpose I/O port | Configurable as N-ch open drain (6 V tolerant), TTL input, or pull-up; supports key interrupt |
| P10–P17 | Multi-function port | Includes SCK00/SCL00, SI00/RxD0/TOOLRxD/SDA00, SO00/TxD0/TOOLTxD, etc. |
| P20–P27 | Analog input port | ANI0–ANI7 with AVREFP/AVREFM references; supports 10-bit ADC conversion |
| RESET | Active-low reset input | Accepts external reset signal; internally pulled up; compatible with on-chip POR/LVD |
| CLKP, CLKM | Crystal oscillator inputs | Supports external crystal (32.768 kHz or 1–20 MHz); optional for high-accuracy timing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power modes | HALT (0.23 μA), STOP (0.57 μA with RTC+LVD), and SNOOZE modes enable battery-powered operation >10 years |
| Integrated RTC | Full calendar (99-year range), alarm, and clock correction eliminate need for external RTC IC and reduce BOM cost |
| Hardware DMA | 4-channel DMA controller enables zero-CPU-overhead transfers between peripherals and RAM (2 clocks per 8/16-bit transfer) |
| Secure flash programming | Block erase prohibition and flash shield window prevent unauthorized firmware modification in deployed systems |
| Multi-voltage I/O | Interface capability with 1.8 V / 2.5 V / 3.3 V devices simplifies mixed-voltage system design without level shifters |
Applications
| Industrial Sensor Node | Smart HVAC Controller |
|---|---|
Use Scenario: Battery-powered wireless temperature/humidity node with BLE gateway interface. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-triggered wake-up, low-power sleep states, and UART-to-BLE bridge logic. Use Value: 0.57 μA STOP mode extends coin-cell life beyond 5 years; integrated 10-bit ADC eliminates external signal conditioning ICs. |
Use Scenario: Wall-mounted HVAC control panel with display, fan speed control, and environmental sensing. IC Role / Device Role / Timing Role: Central MCU handling UI input scanning, PWM fan drive, I²C sensor reads, and real-time scheduling via RTC calendar. Use Value: 48 KB flash accommodates full GUI stack and control algorithms; 26-channel ADC supports multi-zone sensing without multiplexers. |
| Programmable Logic Relay | Energy Metering Subsystem |
Use Scenario: DIN-rail mounted relay module with configurable digital I/O and Modbus RTU communication. IC Role / Device Role / Timing Role: Real-time I/O sequencer executing ladder logic via built-in timer compare units and UART-based Modbus slave stack. Use Value: 16-bit timer channels support precise 1 ms–1 s timing intervals; UART with LIN support enables robust fieldbus interoperability. |
Use Scenario: Secondary MCU in smart meter handling metrology peripheral interface and tamper detection. IC Role / Device Role / Timing Role: Dedicated subsystem controller reading metrology IC SPI registers, monitoring LVD for brown-out events, and logging timestamps via RTC. Use Value: On-chip LVD with 14 programmable thresholds enables precise voltage supervision; RTC timestamping ensures audit-trail integrity for energy logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F101BDFA#V0 | LQFP-32 package (7 × 7 mm, 0.5 mm pitch) vs. HWQFN-32; identical flash/RAM/peripherals | Suitable for through-hole prototyping or legacy PCBs requiring larger footprint and easier rework | Select when board layout requires larger pad pitch or manual soldering feasibility |
| R5F100BDNA#U0 | Includes 4 KB data flash (vs. none in R5F101BDDNA#U0); same 48 KB code flash, 2 KB RAM, and HWQFN-32 package | Required where field firmware updates or parameter storage without external EEPROM is needed | Choose only if data flash persistence is mandatory; adds ~$0.15 cost and minor code overhead |
Compared with R5F101BDDNA#U0, R5F101BDFA#V0 trades miniaturization for assembly flexibility, while R5F100BDNA#U0 adds data flash at the cost of increased memory management complexity - neither is pin-compatible due to differing thermal pad configurations and pin assignments.
Availability
R5F101BDDNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, programmable logic relays, and energy metering subsystems requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.
Supply support for R5F101BDDNA#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 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications requiring high integration and long-term supply stability.
FAQ
What is the flash memory configuration of the R5F101BDDNA#U0?
The R5F101BDDNA#U0 integrates 48 KB of on-chip code flash memory organized in 1 KB blocks, with no data flash (confirmed by "101" series designation). It supports self-programming with boot swap and flash shield window functions, enabling secure firmware updates and protection against unauthorized rewriting.
Does the R5F101BDDNA#U0 support external crystal oscillators?
Yes, the R5F101BDDNA#U0 supports external crystals via dedicated CLKP and CLKM pins, accommodating 32.768 kHz watch crystals for RTC accuracy or 1–20 MHz crystals for main system clock. The high-accuracy on-chip oscillator (±1.0%) remains available as a low-cost alternative when external timing precision is not required.
What is the operating temperature range for the R5F101BDDNA#U0?
The R5F101BDDNA#U0 is rated for industrial operation from –40°C to +85°C, indicated by the "D" suffix in its part number. This qualifies it for deployment in factory automation, building controls, and outdoor equipment where ambient conditions exceed commercial-grade limits.
How many analog input channels does the R5F101BDDNA#U0 ADC support?
The R5F101BDDNA#U0 features a 10-bit successive approximation ADC with up to 26 analog input channels (ANI0–ANI25), plus internal references (AVREFP/AVREFM) and an integrated temperature sensor - all accessible through P20–P27 and other designated pins per the pin configuration table.
Is the R5F101BDDNA#U0 pin-compatible with other RL78/G13 variants in HWQFN-32?
No - while R5F101BDDNA#U0 shares the HWQFN-32 package with other RL78/G13 devices, pin functions vary significantly across memory/configurations. For example, P147/ANI18 appears only on 20-pin variants; P20–P27 analog mapping differs in 32-pin layouts. Always verify pinout against R01DS0131EJ0380 Rev.3.80, Page 13.
R5F101BDDNA#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:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 3K 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:
R5F101BDDNA#U0 FAQ
1.How can I place an order for R5F101BDDNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101BDDNA#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 R5F101BDDNA#U0 reliable?
The price and inventory of R5F101BDDNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101BDDNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101BDDNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101BDDNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101BDDNA#U0?
R5F101BDDNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101BDDNA#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 R5F101BDDNA#U0?
For technical support, including R5F101BDDNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101BDDNA#U0 requirements.
6.How does Aetrix verify that R5F101BDDNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101BDDNA#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 R5F101BDDNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101BDDNA#U0?
All R5F101BDDNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101BDDNA#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 R5F101BDDNA#U0 part is unused and in its original packaging.
Return procedure for R5F101BDDNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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