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Renesas R5F104BEGNA#U0
- Part No.:
- R5F104BEGNA#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F104BEGNA#U0.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,270
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Product details
Overview
R5F104BEGNA#U0 from Renesas is a 32-pin HWQFN-packaged RL78/G14 16-bit microcontroller with 96 KB flash, 12 KB RAM, and 8 KB data flash, operating from 1.6 V to 5.5 V at up to 32 MHz (44 DMIPS), featuring ultra-low-power HALT/STOP/SNOOZE modes (0.60 μA RTC+LVD), integrated 10-bit ADC (20 channels), and dual UART/SPI/I²C interfaces - deployed in industrial sensor nodes and battery-powered control modules.
For engineers reviewing the R5F104BEGNA#U0 datasheet, R5F104BEGNA#U0 pinout, R5F104BEGNA#U0 application, or R5F104BEGNA#U0 equivalent, key selection criteria include its G-grade industrial temperature range (−40°C to +105°C), 32-pin 5×5 mm HWQFN package with exposed die pad, on-chip RTC with calendar/alarm, and support for background data flash rewriting (1M cycles) without halting CPU execution.
Technical Context
The R5F104BEGNA#U0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode), and includes multiply/divide/accumulate instructions with 1 MB address space and four register banks.
It integrates a configurable Event Link Controller (ELC) linking up to 26 event sources to peripherals, a Data Transfer Controller (DTC) with chain transfer capability, and a 12-bit interval timer plus real-time clock with 99-year calendar, alarm, and clock correction - enabling deterministic low-latency peripheral coordination without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | RL78 16-bit CISC with 3-stage pipeline, 1 MB address space, 4 register banks |
| Max Operating Frequency | 32 MHz (44 DMIPS), with selectable high-speed on-chip oscillator (±1.0% accuracy) |
| Memory Configuration | 96 KB code flash (1 KB block size), 12 KB RAM, 8 KB data flash (1M rewrite cycles, BGO supported) |
| Power Consumption | 66 μA/MHz active; 0.60 μA in STOP mode with RTC + LVD enabled |
| Analog Peripherals | 10-bit ADC (20 channels, internal 1.45 V reference, temp sensor), 2-channel comparator, 2-channel 8-bit DAC |
| Serial Interfaces | 3 UART/LIN channels, 3–8 CSI (SPI-compatible) channels, 4–10 I²C/simplified I²C channels |
| Timers & Clock | 8–12 × 16-bit timers (TAU/Timer RJ/RD/RG), 12-bit interval timer, RTC with calendar/alarm/correction |
Pinout & Package
Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 / P01 | GPIO / Analog Input / UART TX/RX | Primary serial interface for UART1 (TxD1/RxD1); also supports timer input/output (TI00/TO00) and TRGCLKA/B for trace/debug |
| P10–P17 | Multiplexed Serial & Timer I/O | Supports CSI1, I²C1, UART2, and Timer Array Unit (TAU) channels; TRDIOx pins enable flexible peripheral routing via ELC |
| P20–P23 | Analog Input / Reference / Output | AVREFP/AVREFM inputs for ADC; ANI0–ANI3 analog inputs; ANO0/ANO1 analog outputs (DAC) |
| P30 / P31 | Interrupt / Timer / Buzzer | INTP3 (RTC1HZ output), INTP4, TO03/TI03 timer functions, PCLBUZ0 for programmable buzzer generation |
| P50 / P51 | UART0 / Debug Interface | SI00/RxD0 and SO00/TxD0 for UART0; also serve as TOOLRxD/TOOLTxD for on-chip debug communication |
| RESET / REGC / VDD / VSS | Power & Reset Control | Active-low reset with internal POR; REGC requires 0.47–1 μF capacitor to VSS for regulator stability; 1.6–5.5 V operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 0.60 μA STOP mode with RTC + LVD active enables multi-year battery life in remote sensors |
| Background Data Flash Rewrite | 1,000,000 write cycles with BGO allows firmware updates or logging without interrupting real-time tasks |
| Event-Driven Peripheral Coordination | ELC links 19–26 event sources directly to peripherals (e.g., ADC trigger → DMA transfer), eliminating polling overhead |
| Flexible Clock System | High-accuracy on-chip oscillator (±1.0%) eliminates external crystal need for many applications; supports 1–64 MHz selection |
| Industrial Temperature Grade | G-grade (−40°C to +105°C) qualification ensures reliable operation in motor drives, HVAC controls, and factory automation |
Applications
| Industrial Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Battery-powered wireless temperature/humidity/pressure node with LoRaWAN or BLE backhaul. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling, RTC-triggered wake-up, data encryption, and radio interface timing. Use Value: 0.60 μA STOP mode extends 2xAA battery life beyond 5 years; BGO-enabled secure firmware updates over-the-air without service interruption. |
Use Scenario: Residential/commercial HVAC control unit with display, relay drivers, and environmental sensing. IC Role / Device Role / Timing Role: Central MCU coordinating 10-bit ADC readings, 2-channel DAC for valve control, RTC-based scheduling, and UART-driven user interface. Use Value: Integrated RTC with calendar/alarm eliminates external real-time clock IC; dual UARTs enable simultaneous display and cloud gateway communication. |
| Programmable Logic Relay | Motor Drive Monitor |
|
Use Scenario: DIN-rail mounted PLC-style relay module with configurable I/O, digital inputs, and PWM outputs. IC Role / Device Role / Timing Role: Real-time logic executor using TAU timers for precise PWM generation and INTPx interrupts for fast edge detection on inputs. Use Value: 8–12 × 16-bit timers support independent PWM channels and input capture; ELC enables sub-microsecond response to fault signals. |
Use Scenario: Inverter-integrated motor monitor measuring current/voltage, temperature, and commutation timing. IC Role / Device Role / Timing Role: Safety-critical subsystem controller performing ADC sampling synchronized to PWM edges, thermal shutdown via LVD, and CAN message formatting. Use Value: On-chip LVD with 14-level selection provides programmable brown-out protection; 10-bit ADC with internal reference ensures consistent measurement across voltage drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104GEGNA#U0 | 128 KB flash, 16 KB RAM, same 32-pin HWQFN package and G-grade temp range | Higher memory headroom for larger protocol stacks (e.g., Modbus TCP, OTA update image storage) | Select when firmware growth exceeds 96 KB or additional RAM is needed for buffering |
| R5F104BEGLA#U0 | Same 96 KB/12 KB/8 KB memory, but 36-pin WFLGA (4×4 mm) package - smaller footprint, no exposed pad | Space-constrained designs where PCB area is critical and thermal dissipation requirements are lower | Choose for compact consumer IoT devices where 32-pin HWQFN thermal performance is unnecessary |
Compared with R5F104BEGNA#U0, R5F104GEGNA#U0 offers scalable memory for future firmware expansion without changing layout, while R5F104BEGLA#U0 reduces board area by 36% at the cost of thermal margin - both retain identical peripheral sets, clocking, and low-power behavior.
Availability
R5F104BEGNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and programmable logic relays requiring stable component supply, long-term lifecycle assurance, and G-grade temperature compliance.
Supply support for R5F104BEGNA#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/G14 family delivers true low-power 16-bit performance for general-purpose industrial and consumer applications, emphasizing energy efficiency, integration density, and ease of migration within the RL78 ecosystem.
FAQ
What is the maximum operating frequency and associated DMIPS rating for the R5F104BEGNA#U0?
The R5F104BEGNA#U0 operates at up to 32 MHz with a measured performance of 44 DMIPS. This rating reflects integer instruction throughput under typical conditions using the RL78 CPU core's 3-stage pipeline and optimized compiler toolchain. The on-chip high-speed oscillator supports this frequency with ±1.0% accuracy across −40°C to +105°C, eliminating need for external crystals in many timing-tolerant applications. R5F104BEGNA#U0 achieves this while maintaining 66 μA/MHz active current consumption.
Does the R5F104BEGNA#U0 support background data flash rewriting, and what is the endurance specification?
Yes, the R5F104BEGNA#U0 supports Background Operation (BGO) for data flash rewriting, allowing CPU code execution from program memory while data flash is being programmed or erased. The data flash endurance is rated at 1,000,000 write/erase cycles (typical), with operation supported across the full VDD range of 1.8 V to 5.5 V. This enables robust field firmware updates and nonvolatile data logging without system interruption. R5F104BEGNA#U0 implements this using dedicated flash control logic and interrupt notification upon completion.
What industrial temperature grade does the R5F104BEGNA#U0 carry, and how is it indicated in the part number?
The R5F104BEGNA#U0 carries the 'G' grade, specifying an operating ambient temperature range of −40°C to +105°C for industrial applications. This is encoded in the fifth character of the part number: R5F104BEGNA#U0 - where 'G' denotes the extended industrial temperature qualification. The device undergoes screening and characterization across this full range for parameters including flash retention, ADC linearity, oscillator stability, and I/O drive strength. R5F104BEGNA#U0 is not rated for automotive AEC-Q100 qualification.
How many analog-to-digital converter (ADC) channels and what resolution does the R5F104BEGNA#U0 provide?
The R5F104BEGNA#U0 integrates a 10-bit successive-approximation ADC with up to 20 input channels (ANI0–ANI19), supporting single-ended and differential measurements. It includes an internal 1.45 V reference voltage and an on-die temperature sensor. Conversion time is programmable down to 1.0 μs per sample, and the ADC supports hardware triggers from timers or ELC events for synchronized sampling. R5F104BEGNA#U0 also provides two independent 8-bit DAC channels (ANO0/ANO1) for analog output generation.
What package type and pin count does the R5F104BEGNA#U0 use, and what are its key mechanical features?
The R5F104BEGNA#U0 uses a 32-pin HWQFN (Heat Sink Quad Flat No-lead) package measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed die pad. The 'NA' in the part number explicitly denotes the HWQFN variant, and '#U0' specifies tray packaging. The exposed pad must be connected to VSS for thermal and electrical stability, and a 0.47–1 μF capacitor is required between REGC and VSS. R5F104BEGNA#U0's compact footprint and thermal performance suit space-constrained industrial control boards.
R5F104BEGNA#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- Series:
- RL78/G14
- 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 5.5K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.6V ~ 5.5V
- Data Converters:
- A/D 8x8/10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F104BEGNA#U0 FAQ
1.How can I place an order for R5F104BEGNA#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104BEGNA#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 R5F104BEGNA#U0 reliable?
The price and inventory of R5F104BEGNA#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104BEGNA#U0 is usually 5 days.
3.What payment methods are accepted for R5F104BEGNA#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104BEGNA#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104BEGNA#U0?
R5F104BEGNA#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104BEGNA#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 R5F104BEGNA#U0?
For technical support, including R5F104BEGNA#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104BEGNA#U0 requirements.
6.How does Aetrix verify that R5F104BEGNA#U0 is sourced from the original manufacturer or authorized distributors?
All R5F104BEGNA#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 R5F104BEGNA#U0 meets industry standards.
7.What is the process for return or replacement of R5F104BEGNA#U0?
All R5F104BEGNA#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104BEGNA#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 R5F104BEGNA#U0 part is unused and in its original packaging.
Return procedure for R5F104BEGNA#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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