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Renesas R5F101BDANA#20
- Part No.:
- R5F101BDANA#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F101BDANA#20.pdf
- Description:
- IC MCU 16BIT 48KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
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Product details
Overview
R5F101BDANA#20 from Renesas is a 32-bit RL78/G13 microcontroller with 32 KB flash memory, 2 KB RAM, and no data flash, housed in a 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch) package. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes including STOP (0.57 μA with RTC + LVD) and HALT, targeting battery-powered industrial sensors and smart metering interfaces.
For engineers reviewing the R5F101BDANA#20 datasheet, R5F101BDANA#20 pinout, R5F101BDANA#20 application, or R5F101BDANA#20 equivalent, key selection criteria include its 32-pin HWQFN footprint, absence of on-chip data flash, industrial-grade −40°C to +85°C temperature rating (D-suffix), and integrated 10-bit ADC with 16 analog inputs - critical for precision analog front-end designs.
Technical Context
The R5F101BDANA#20 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 ultra-low-speed mode). Its memory map includes 1 MB address space, on-chip debug, and self-programming capability with boot swap function.
Peripheral integration includes eight 16-bit timers, one real-time clock with calendar and alarm, one watchdog timer, up to 16-channel 10-bit A/D converter with internal reference voltage and temperature sensor, and serial interfaces: CSI (SPI-compatible), UART/LIN, and I²C - all configurable without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 32-bit CISC CPU with 3-stage pipeline and 1 MB address space |
| Operating Voltage | 1.6 V to 5.5 V - enables direct interface with 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains |
| Performance | 41 DMIPS at 32 MHz - sufficient for real-time control loops and protocol stacks (LIN, I²C) |
| Memory | 32 KB code flash, 2 KB RAM, 0 KB data flash - eliminates need for external EEPROM in simple firmware-update schemes |
| Low-Power Modes | STOP mode draws 0.57 μA with RTC + LVD active - extends battery life in always-on sensing applications |
| Analog Peripherals | 10-bit A/D converter with 16 input channels, internal 1.45 V reference, and integrated temperature sensor |
| Package & Temp | 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), −40°C to +85°C industrial grade (D-suffix) |
Pinout & 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 power domains support separate analog/digital supply routing and noise isolation |
| P00–P07 | General-purpose I/O with N-ch open drain option | Configurable pull-up, TTL input buffer, and 6 V-tolerant variants enable mixed-voltage interfacing |
| P10–P17 | Multi-function pins (SCK00/SCL00, SI00/RxD0, SO00/TxD0, etc.) | Shared serial peripheral functions reduce pin count while maintaining SPI/I²C/UART flexibility |
| P20–P27 | Analog input channels (ANI0–ANI7) and AVREFP/AVREFM | Dedicated analog I/O with differential reference inputs improve ADC accuracy in noisy environments |
| RESET | Active-low reset input | Accepts external reset signal or internal POR/LVD assertion - ensures deterministic startup |
| CLKP/CLKM | Crystal oscillator connections | Supports 32.768 kHz crystal for RTC or high-frequency crystals up to 20 MHz for main clock |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power STOP mode | 0.57 μA with RTC + LVD active - enables multi-year operation on coin-cell batteries |
| On-chip high-accuracy oscillator | ±1.0% tolerance over −20°C to +85°C - eliminates external crystal for cost-sensitive timing-critical apps |
| Background data flash programming | Not applicable - R5F101BDANA#20 has no data flash; simplifies firmware update logic and reduces BOM |
| Integrated temperature sensor | Calibrated 10-bit output referenced to internal 1.45 V - enables system-level thermal monitoring without external IC |
| LIN bus support | UART channel with LIN break detection and sync field generation - meets ISO 17987-4 for automotive body electronics |
| Hardware DMA controller | 2-channel DMA with 2-clock transfer latency between SFR and RAM - offloads CPU during ADC burst reads or UART streaming |
Applications
| Smart Energy Sensor Node | Industrial Motor Control Interface |
|---|---|
Use Scenario: Battery-powered current/voltage monitoring unit in DIN-rail mounted energy meters, sampling line parameters every 100 ms and transmitting via RS-485. IC Role / Device Role / Timing Role: Main controller executing ADC acquisition, RMS calculation, LIN communication stack, and low-power wake-up scheduling. Use Value: 0.57 μA STOP mode extends 10-year battery life; 16-channel ADC supports simultaneous phase measurement; built-in LIN reduces external transceiver count. |
Use Scenario: Compact I/O module interfacing with BLDC motor drivers, reading hall-effect feedback, controlling PWM outputs, and reporting faults over CAN/LIN gateway. IC Role / Device Role / Timing Role: Real-time peripheral coordinator managing GPIO, timer-triggered PWM, and UART-based diagnostics. Use Value: 41 DMIPS handles closed-loop commutation timing; 8 × 16-bit timers provide independent channel control; 32-pin HWQFN fits tight PCB space constraints. |
| Programmable Logic Controller (PLC) I/O Expander | Medical Infusion Pump Controller |
Use Scenario: DIN-rail mounted digital I/O expansion module adding 16 isolated inputs/outputs to legacy PLC backplanes using Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol translator and GPIO manager with precise timing for input debouncing and output pulse-width modulation. Use Value: On-chip UART with LIN support reuses same hardware for Modbus framing; 1.6–5.5 V operation accommodates diverse field power rails; industrial temp grade ensures reliability in factory environments. |
Use Scenario: Safety-critical infusion pump subsystem performing flow rate calculation, alarm generation (occlusion, air bubble), and user interface polling. IC Role / Device Role / Timing Role: Primary safety monitor executing dual-redundant ADC checks, watchdog supervision, and real-time clock-based dose logging. Use Value: Independent RTC with calendar and alarm enables audit-trail timestamping; LVD interrupt at 14 selectable thresholds supports fail-safe shutdown; −40°C to +85°C rating covers clinical storage and operating conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100BDANA#20 | Includes 4 KB data flash; identical flash/RAM/package/temp rating | Required where firmware requires nonvolatile parameter storage without external EEPROM | Select when field calibration data, device configuration, or usage logs must persist across power cycles |
| R5F101BDFB#30 | LQFP-32 (7 × 7 mm, 0.5 mm pitch); same memory/peripherals/temp grade | Better suited for manual assembly, prototyping, or thermal management with exposed pad access | Choose for lab validation, quick-turn PCBs, or applications requiring easier rework and thermal vias |
Compared with R5F101BDANA#20, R5F100BDANA#20 adds data flash for embedded data logging but increases cost and complexity; R5F101BDFB#30 trades the HWQFN's compactness for LQFP's assembly flexibility and thermal dissipation - both retain identical core performance and peripheral sets.
Availability
R5F101BDANA#20 is available at Aetrix Electronics and suitable for industrial motor control interfaces, smart energy sensor nodes, and programmable logic controller (PLC) I/O expanders requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for R5F101BDANA#20 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 infrastructure markets.
The RL78/G13 product line delivers true low-power 32-bit MCU performance for general-purpose industrial and consumer applications, emphasizing energy efficiency, integration density, and design simplicity without sacrificing real-time capability.
FAQ
What is the maximum operating frequency of the R5F101BDANA#20?
The R5F101BDANA#20 achieves 41 DMIPS at 32 MHz using its high-speed on-chip oscillator. It supports selectable clock sources including internal oscillators (1–32 MHz, ±1.0% accuracy) and external crystals, with minimum instruction execution time of 0.03125 μs at full speed. The RL78 core maintains deterministic timing across all modes, making R5F101BDANA#20 suitable for hard real-time tasks.
Does the R5F101BDANA#20 include data flash memory?
No, the R5F101BDANA#20 does not include data flash memory. As indicated by the "101" in its part number (per Renesas documentation), it provides 32 KB of code flash and 2 KB of RAM only. This distinguishes it from "100"-series variants like R5F100BDANA#20, which integrate 4 KB of data flash. The absence of data flash simplifies firmware architecture for applications that store configuration externally or use code flash for infrequent updates.
What package type and pin count does the R5F101BDANA#20 use?
The R5F101BDANA#20 uses a 32-pin HWQFN package measuring 5 × 5 mm with 0.5-mm pitch and an exposed thermal pad. The "NA" in the part number explicitly denotes HWQFN, and "#20" indicates embossed tape packaging. This compact, thermally efficient package supports high-density PCB layouts and automated SMT assembly, commonly used in space-constrained industrial modules.
What is the operating temperature range for the R5F101BDANA#20?
The R5F101BDANA#20 is rated for industrial operation from −40°C to +85°C, denoted by the "D" suffix in its part number. This specification complies with JEDEC JESD22-A104 and ensures reliable functionality in factory automation, building controls, and outdoor metering equipment without derating. It does not support the extended −40°C to +105°C range offered by "G"-suffix variants.
Which serial communication interfaces are supported by the R5F101BDANA#20?
The R5F101BDANA#20 integrates multiple serial interfaces: up to two CSI (SPI-compatible) channels, two UART/LIN channels with automatic LIN break detection, and up to three I²C/Simplified I²C channels. These are multiplexed across dedicated pins (e.g., P10–P13), enabling concurrent use of UART for diagnostics, I²C for sensor communication, and CSI for display or memory interfacing - all without external level shifters due to mixed-voltage I/O support.
R5F101BDANA#20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- Series:
- RL78/G13
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- 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:
R5F101BDANA#20 FAQ
1.How can I place an order for R5F101BDANA#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F101BDANA#20 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 R5F101BDANA#20 reliable?
The price and inventory of R5F101BDANA#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F101BDANA#20 is usually 5 days.
3.What payment methods are accepted for R5F101BDANA#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F101BDANA#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F101BDANA#20?
R5F101BDANA#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F101BDANA#20 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 R5F101BDANA#20?
For technical support, including R5F101BDANA#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F101BDANA#20 requirements.
6.How does Aetrix verify that R5F101BDANA#20 is sourced from the original manufacturer or authorized distributors?
All R5F101BDANA#20 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 R5F101BDANA#20 meets industry standards.
7.What is the process for return or replacement of R5F101BDANA#20?
All R5F101BDANA#20 units undergo pre-shipment inspection (PSI). If there is an issue with R5F101BDANA#20, 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 R5F101BDANA#20 part is unused and in its original packaging.
Return procedure for R5F101BDANA#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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