Renesas R5F100BFANA#U0
- Part No.:
- R5F100BFANA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F100BFANA#U0.pdf
- Description:
- IC MCU 16BIT 96KB FLASH 32HWQFN
- Quantity:
- Payment:

- Shipping:

Inventory:3,767
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Product details
Overview
R5F100BFANA#U0 from Renesas is a 32-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 96 KB flash, 8 KB data flash, and 8 KB RAM, operating at up to 32 MHz (41 DMIPS), supporting ultra-low-power modes (0.57 μA RTC+LVD), 10-bit ADC (26 channels), and multiple serial interfaces (UART, I²C, CSI) for embedded control in industrial sensors and battery-powered IoT nodes.
For engineers reviewing the R5F100BFANA#U0 datasheet, R5F100BFANA#U0 pinout, R5F100BFANA#U0 application, or R5F100BFANA#U0 equivalent, key selection criteria include its 32-pin HWQFN-0.5mm package, integrated RTC with calendar/alarm, background data flash rewriting capability, and support for -40°C to +85°C industrial operation with LVD interrupt levels.
Technical Context
The R5F100BFANA#U0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a 12-bit interval timer, real-time clock with 99-year calendar, and watchdog timer driven by dedicated low-speed oscillator.
Power management includes HALT, STOP, and SNOOZE modes, on-chip POR and 14-level LVD, and DMA controller with 4 channels enabling 2-clock transfers between SFR and RAM. Serial connectivity comprises up to 4 UART/LIN channels, 10 I²C/Simplified I²C channels, and 8 CSI channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline and variable instruction timing |
| Max Operating Frequency | 32 MHz (41 DMIPS), supported by high-accuracy ±1.0% on-chip oscillator |
| Memory Configuration | 96 KB code flash (1 KB block size), 8 KB data flash (1M rewrite cycles), 8 KB RAM |
| Low-Power Performance | 0.57 μA in STOP mode with RTC + LVD active; 66 μA/MHz in active mode |
| Analog Peripherals | 10-bit ADC with 26 input channels, internal 1.45 V reference and temperature sensor |
| Serial Interfaces | Up to 4 UART/LIN, 10 I²C/Simplified I²C, and 8 CSI channels |
| Operating Temperature | -40°C to +85°C (Industrial grade, "D" suffix confirmed in part number decoding) |
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, VSS | Power supply and ground | Single 1.6–5.5 V supply; 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 enabled |
| P10–P17 | Multiplexed I/O | Supports SCK00/SCL00, SI00/RxD0/TOOLRxD/SDA00, SO00/TxD0/TOOLTxD, etc. |
| P20–P27 | Analog input / reference | ANI0–ANI7 inputs; AVREFP/AVREFM for ADC reference voltage selection |
| RESET | Active-low reset input | Accepts external reset signal; internally pulled up; compatible with POR/LVD assertion |
| CLKP, CLKN | Crystal oscillator connection | Supports external crystal (32.768 kHz or 1–20 MHz) for precise timing or RTC |
Key Features
| Feature | Design Value |
|---|---|
| Self-programming flash | Boot swap and flash shield window functions enable secure firmware updates without external programmer |
| Background data flash rewrite | Code execution continues from program memory while rewriting 4–8 KB data flash (BGO mode) |
| DMA controller | 4-channel DMA with 2-clock transfers between SFR and RAM reduces CPU overhead for peripheral data movement |
| Real-time clock (RTC) | Calendar function (year/month/day/hour/min/sec), alarm, and auto-correction eliminate need for external RTC IC |
| Different-potential interface | I/O pins support direct interfacing with 1.8 V, 2.5 V, or 3.0 V logic without level shifters |
Applications
| Smart Sensor Node | Industrial HMI Panel |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and pressure data with periodic BLE transmission. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-triggered wake-up, low-power state transitions, and UART-to-BLE bridge. Use Value: 0.57 μA STOP mode extends battery life; integrated RTC eliminates external timing component; 10-bit ADC meets precision requirements without calibration IC. |
Use Scenario: Local operator interface for PLC-controlled HVAC systems with button inputs, LED indicators, and RS-485 communication. IC Role / Device Role / Timing Role: Dedicated UI processor handling key scan, buzzer output, LED PWM dimming, and isolated RS-485 UART framing. Use Value: On-chip clock output/buzzer controller reduces BOM count; 26-channel ADC supports analog sensor monitoring; 14-level LVD ensures robust brown-out detection in noisy factory environments. |
| Energy Metering Module | Home Appliance Control |
Use Scenario: Sub-metering unit measuring current/voltage via shunt/sensor, calculating kWh, and logging data to internal flash. IC Role / Device Role / Timing Role: Data acquisition and logging engine performing ADC conversions, RTC-stamped storage, and tamper-detection using LVD interrupts. Use Value: Background data flash rewrite allows continuous logging during active measurement; 8 KB data flash enables >10 years of hourly energy logs; 1.45 V internal reference stabilizes ADC accuracy across supply variation. |
Use Scenario: Washing machine main control board managing motor drive signals, water valve actuation, temperature sensing, and user display. IC Role / Device Role / Timing Role: Central MCU coordinating PWM motor control, 10-bit ADC-based thermistor reading, and I²C-connected display driver. Use Value: 96 KB flash accommodates complex wash cycle logic and safety firmware; SNOOZE mode enables responsive button wake-up with minimal power penalty; hardware multiplier accelerates PID calculations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F100BGANA#U0 | 128 KB flash, 12 KB RAM, same 32-pin HWQFN package and peripheral set | Higher memory headroom for larger firmware or extended data logging | Select when future firmware expansion or additional feature integration is anticipated |
| R5F101BFANA#U0 | No data flash (0 KB); otherwise identical flash/RAM/peripheral spec and pinout | Eliminates background rewrite requirement; suitable for fixed-parameter configurations | Choose when data persistence is handled externally or not required, reducing cost and complexity |
Compared with R5F100BFANA#U0, R5F100BGANA#U0 offers scalable memory for evolving firmware needs, while R5F101BFANA#U0 removes data flash to simplify programming and reduce cost where non-volatile parameter storage is unnecessary.
Availability
R5F100BFANA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering modules, and home appliance control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for R5F100BFANA#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 automotive, industrial, and IoT markets.
The RL78/G13 family delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications requiring high integration, robust timing, and long-term supply assurance.
FAQ
What is the maximum operating frequency and corresponding performance of the R5F100BFANA#U0?
The R5F100BFANA#U0 operates at up to 32 MHz, delivering 41 DMIPS performance. Its high-accuracy ±1.0% on-chip oscillator eliminates the need for an external crystal in many applications, while configurable instruction timing supports both high-speed processing and ultra-low-power operation down to 32.768 kHz.
Does the R5F100BFANA#U0 support background data flash rewriting?
Yes, the R5F100BFANA#U0 supports background operation (BGO) for data flash rewriting: instructions can be executed from program memory while simultaneously rewriting the 8 KB data flash. This enables seamless data logging and parameter updates without halting application execution.
What packaging and thermal specifications apply to the R5F100BFANA#U0?
The R5F100BFANA#U0 uses a 32-pin HWQFN package (5 × 5 mm, 0.5-mm pitch) rated for industrial operation from -40°C to +85°C. It complies with RoHS and JEDEC MSL3 handling requirements, and its thermal pad design supports efficient PCB heat dissipation in compact layouts.
How does the R5F100BFANA#U0 manage ultra-low-power operation?
The R5F100BFANA#U0 achieves ultra-low-power operation through HALT, STOP, and SNOOZE modes. In STOP mode with RTC and LVD active, it consumes only 0.57 μA. Its 66 μA/MHz active-mode efficiency and configurable clock gating allow precise power/performance trade-offs across diverse use cases.
Which analog and serial peripherals are integrated into the R5F100BFANA#U0?
The R5F100BFANA#U0 integrates a 10-bit ADC with up to 26 input channels and internal 1.45 V reference, plus a temperature sensor. Serial interfaces include up to 4 UART/LIN channels, 10 I²C/Simplified I²C channels, and 8 CSI channels - all accessible via multiplexed GPIO pins in its 32-pin HWQFN package.
R5F100BFANA#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:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 8K 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:
R5F100BFANA#U0 FAQ
1.How can I place an order for R5F100BFANA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F100BFANA#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 R5F100BFANA#U0 reliable?
The price and inventory of R5F100BFANA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F100BFANA#U0 is usually 5 days.
3.What payment methods are accepted for R5F100BFANA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F100BFANA#U0 transactions.
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4.How is shipping managed for R5F100BFANA#U0?
R5F100BFANA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F100BFANA#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 R5F100BFANA#U0?
For technical support, including R5F100BFANA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F100BFANA#U0 requirements.
6.How does Aetrix verify that R5F100BFANA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F100BFANA#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 R5F100BFANA#U0 meets industry standards.
7.What is the process for return or replacement of R5F100BFANA#U0?
All R5F100BFANA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F100BFANA#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 R5F100BFANA#U0 part is unused and in its original packaging.
Return procedure for R5F100BFANA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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