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Renesas R5F101BCDNA#U0
- Part No.:
- R5F101BCDNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F101BCDNA#U0.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,310
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Product details
Overview
R5F101BCDNA#U0 from Renesas is a 32-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 16 KB flash, 2 KB RAM, and no data flash memory, operating from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.57 μA in RTC+LVD mode), and integrates 10-bit ADC (6 channels), RTC, UART, I²C, and 8×16-bit timers - used in battery-powered industrial sensors and smart metering endpoints.
For engineers reviewing the R5F101BCDNA#U0 datasheet, R5F101BCDNA#U0 pinout, R5F101BCDNA#U0 application, or R5F101BCDNA#U0 equivalent, key selection criteria include its 32-pin HWQFN-0.5 mm pitch package, absence of data flash, industrial-grade −40°C to +85°C operation (D grade), and support for SNOOZE/STOP/HALT low-power modes in resource-constrained embedded control designs.
Technical Context
The R5F101BCDNA#U0 implements the RL78 CPU core with a 3-stage CISC 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 spans 1 MB address space, with on-chip RAM banks organized across four register banks (8×8-bit registers each).
Power management includes an on-chip POR circuit and configurable LVD with 14 voltage detection levels, while peripheral integration covers 2-channel DMA, 16×16-bit multiply/32-bit divide hardware, background data flash rewrite capability (not applicable here), and simplified SPI/CSI, UART/LIN, and I²C interfaces - all optimized for deterministic real-time control in cost-sensitive applications.
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 - enables 41 DMIPS performance for real-time control loops |
| Flash Memory | 16 KB code flash - sufficient for compact firmware with bootloader and safety checks |
| RAM | 2 KB on-chip RAM - supports moderate stack depth and data buffering |
| ADC Resolution & Channels | 10-bit SAR ADC with 6 input channels - suitable for analog sensor interfacing without external signal conditioning |
| Supply Voltage Range | 1.6 V to 5.5 V - allows direct connection to single-cell Li-ion, 3.3 V, or 5 V rails |
| Operating Temperature | −40°C to +85°C (D grade) - qualified for industrial ambient environments |
| Low-Power Modes | HALT, STOP, and SNOOZE modes - achieves 0.57 μA retention current with RTC + LVD active |
Pinout & Package
Package: 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch), moisture sensitivity level MSL3, RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | Connects to 1.6–5.5 V system rail; decoupling capacitor required near pin |
| VSS | Ground reference | Dedicated digital ground return path; must be low-impedance and tied to system GND plane |
| RESET | Active-low reset input | Asynchronous reset trigger; internal pull-up enabled; compatible with external RC or supervisor IC |
| P00–P07 | General-purpose I/O ports | Bi-directional CMOS pins with programmable N-ch open-drain, TTL input, and pull-up options |
| P10/P11 | Serial interface pins | Support SCK00/SI00/RxD0/TOOLRxD/SDA00 - configurable for UART, CSI, or I²C functions |
| P20–P22 | Analog input channels | ANI0/ANI1/ANI2 inputs with AVREFP/AVREFM references - enable ratiometric sensor measurements |
| CLKP/CLKN | External crystal oscillator inputs | Support 32.768 kHz crystal for RTC accuracy; optional high-speed crystal up to 20 MHz |
| EXCLK | External clock input | Accepts external clock source (1–20 MHz) as system clock alternative to on-chip oscillator |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP modes | Reduces active current to 66 μA/MHz and standby to 0.57 μA - extends battery life in intermittent-sensing applications |
| On-chip high-accuracy oscillator | ±1.0% frequency stability over −20°C to +85°C at 32 MHz - eliminates need for external crystal in non-RTC-critical systems |
| Integrated RTC with calendar | 99-year calendar, alarm, and clock correction - enables time-stamped logging without external RTC IC |
| Hardware multiplier/divider | 16×16→32-bit multiply and 32÷32→32-bit divide in single-cycle - accelerates PID, filtering, and scaling operations |
| DMA controller (2-channel) | Enables zero-CPU-overhead transfers between peripherals and RAM - improves real-time response in UART/I²C burst transfers |
| Temperature sensor & internal VREF | On-die temperature sensing and 1.45 V internal reference - supports self-calibration and thermal monitoring without BOM additions |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
Use Scenario: Compact, battery-backed electricity meter with pulse counting, tamper detection, and periodic RF reporting. IC Role / Device Role / Timing Role: Main system controller managing metrology interface, RTC-based billing intervals, and low-power wake-up scheduling. Use Value: 0.57 μA RTC+LVD retention current enables >5-year battery life; integrated UART and I²C reduce external component count. |
Use Scenario: Wireless temperature/humidity node deployed in factory HVAC ducts with 10-year maintenance cycles. IC Role / Device Role / Timing Role: Sensor aggregator executing ADC sampling, local compensation, and sleep/wake coordination for sub-GHz transceiver. Use Value: On-chip temperature sensor and 1.45 V reference eliminate calibration components; SNOOZE mode enables fast wake-from-sleep ADC triggers. |
| Home Appliance Control | Medical Diagnostic Handheld |
Use Scenario: Brushless motor control in cordless vacuum with real-time current sensing and thermal protection. IC Role / Device Role / Timing Role: Motor timing controller using 16-bit timers for PWM generation and ADC-triggered current sampling. Use Value: 8×16-bit timers support multi-phase PWM with dead-time insertion; 10-bit ADC resolves motor current with <1% error at 3.3 V. |
Use Scenario: Portable blood glucose monitor requiring FDA-compliant firmware, low-power display refresh, and secure data storage. IC Role / Device Role / Timing Role: Safety-critical host MCU managing strip insertion detection, electrochemical measurement, and encrypted BLE transmission. Use Value: Flash security lock prevents unauthorized firmware access; LVD interrupt at 1.9 V ensures graceful shutdown before sensor reading corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100BCDNA#U0 | Same 32-pin HWQFN package and core, but includes 4 KB data flash memory | Required where field firmware updates or parameter storage (e.g., calibration tables) are needed | Select when non-volatile parameter retention or bootloader update capability is mandatory |
| RL78/G14 R5F104BAANA#U0 | RL78/G14 family; adds CAN 2.0B interface, higher flash (64 KB), and enhanced EMI immunity | Suitable for automotive body electronics or industrial networks requiring CAN bus communication | Choose only if CAN physical layer integration and extended memory justify migration effort |
Compared with R5F100BCDNA#U0, the R5F101BCDNA#U0 trades data flash for lower cost and reduced test complexity, while the RL78/G14 alternative adds CAN but increases BOM cost and layout footprint - making R5F101BCDNA#U0 optimal for cost-sensitive, flash-only control tasks without communication protocol demands.
Availability
R5F101BCDNA#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 assurance, and RoHS-compliant packaging.
Supply support for R5F101BCDNA#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 product line targets cost-optimized, ultra-low-power general-purpose embedded control - designed for applications where energy efficiency, small footprint, and rapid development outweigh advanced connectivity or large memory needs.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F101BCDNA#U0?
The R5F101BCDNA#U0 operates at up to 32 MHz with its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This frequency is achievable across the full 1.6 V to 5.5 V supply range and −40°C to +85°C temperature range, enabling deterministic real-time execution in motor control and sensor fusion applications. The R5F101BCDNA#U0 maintains this rating without external clock sources or speed-binning.
Does the R5F101BCDNA#U0 include data flash memory?
No, the R5F101BCDNA#U0 does not include data flash memory. As indicated by the "101" in its part number per Renesas' naming convention, it provides only 16 KB of code flash and 2 KB of RAM. Data storage must be implemented externally or via EEPROM emulation in code flash - unlike the R5F100BCDNA#U0 variant, which integrates 4 KB of dedicated data flash. The R5F101BCDNA#U0 is optimized for fixed-function firmware with minimal runtime parameter persistence.
What package type and pin count does the R5F101BCDNA#U0 use?
The R5F101BCDNA#U0 uses a 32-pin HWQFN package measuring 5 mm × 5 mm with 0.5 mm pitch, designated by the "NA" suffix and "#U0" tray packaging code. This package supports reflow soldering, offers excellent thermal dissipation for its class, and is compatible with standard 32-pin QFN footprints. Pin compatibility is maintained across all RL78/G13 32-pin HWQFN variants, including R5F100x and R5F101x families.
What low-power modes are supported by the R5F101BCDNA#U0, and what is the lowest achievable current draw?
The R5F101BCDNA#U0 supports HALT, STOP, and SNOOZE low-power modes. In STOP mode with only the RTC and LVD active, it draws just 0.57 μA - verified across −40°C to +85°C. This enables multi-year battery operation in wireless sensor nodes. SNOOZE mode allows selected peripherals (e.g., UART, ADC) to remain active while the CPU sleeps, reducing wake latency versus full STOP entry/exit. The R5F101BCDNA#U0 achieves these values without external circuitry or configuration overhead.
Which communication interfaces are integrated into the R5F101BCDNA#U0?
The R5F101BCDNA#U0 integrates UART (with LIN support), I²C, and simplified SPI (CSI) interfaces - with up to 2 UART channels, 3 I²C channels, and 2 CSI channels available depending on pin mapping. These are implemented in hardware with independent baud rate generators and FIFO buffers, enabling simultaneous serial communication without CPU polling. No CAN, USB, or Ethernet interfaces are included; those require external transceivers or migration to RL78/G14 or RX families. The R5F101BCDNA#U0 prioritizes simplicity and power efficiency over protocol breadth.
R5F101BCDNA#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:
- 32KB (32K 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:
R5F101BCDNA#U0 FAQ
1.How can I place an order for R5F101BCDNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101BCDNA#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 R5F101BCDNA#U0 reliable?
The price and inventory of R5F101BCDNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101BCDNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F101BCDNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101BCDNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101BCDNA#U0?
R5F101BCDNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101BCDNA#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 R5F101BCDNA#U0?
For technical support, including R5F101BCDNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101BCDNA#U0 requirements.
6.How does Aetrix verify that R5F101BCDNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F101BCDNA#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 R5F101BCDNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F101BCDNA#U0?
All R5F101BCDNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101BCDNA#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 R5F101BCDNA#U0 part is unused and in its original packaging.
Return procedure for R5F101BCDNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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