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Renesas R5F104BEGNA#40
- Part No.:
- R5F104BEGNA#40
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
R5F104BEGNA#40.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 32HWQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,961
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Product details
Overview
R5F104BEGNA#40 from Renesas is a 32-bit RL78/G14 microcontroller with 96 KB flash, 12 KB RAM, and 32-pin HWQFN (6 × 6 mm, 0.5 mm pitch) package, operating from 1.6–5.5 V at -40 to +105°C. It delivers 44 DMIPS at 32 MHz, features ultra-low power consumption (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates 10-bit ADC (12 channels), UART/SPI/I²C interfaces, RTC, and hardware DTC/ELC for industrial sensor control and motor drive applications.
For engineers reviewing the R5F104BEGNA#40 datasheet, R5F104BEGNA#40 pinout, R5F104BEGNA#40 application, or R5F104BEGNA#40 equivalent, key selection criteria include its G-grade industrial temperature rating, HWQFN-32 package compatibility with high-density PCB layouts, integrated low-power real-time clock with calendar function, and support for background data flash rewriting during program execution.
Technical Context
The R5F104BEGNA#40 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs min @ 32 MHz to 30.5 µs @ 32.768 kHz). It uses on-chip high-accuracy ±1.0% oscillator (selectable 1–64 MHz) and supports HALT/STOP/SNOOZE low-power modes with dedicated LVD and POR circuits.
Peripheral integration includes Timer Array Unit (TAU) with 8 channels, 12-bit interval timer, RTC with alarm/calendar, 1-channel watchdog timer, and Event Link Controller (ELC) enabling direct peripheral-to-peripheral event triggering without CPU intervention-reducing latency and power in deterministic control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | RL78 32-bit CISC CPU with 3-stage pipeline and multiply/divide instructions |
| Max Operating Frequency | 32 MHz - delivers 44 DMIPS for real-time control tasks |
| Flash Memory | 96 KB code flash - sufficient for complex firmware with bootloader and safety routines |
| Data Flash | 8 KB - supports 1,000,000 write cycles for parameter storage with background operation |
| RAM | 12 KB on-chip SRAM - accommodates stack, heap, and real-time buffers |
| ADC | 10-bit resolution, 12 input channels - enables multi-sensor analog acquisition with internal 1.45 V reference |
| Operating Temperature | -40°C to +105°C (G-grade) - qualified for under-hood automotive and industrial motor drives |
| Supply Voltage | 1.6 V to 5.5 V - supports direct battery operation (e.g., 3.3 V or 5 V rails) without external regulators |
Pinout & Package
Package: 32-pin HWQFN (6 × 6 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P00 | TxD1 / TI00 / TRGCLKA | Primary UART transmit and timer input - supports serial communication and precise timing capture |
| P01 | RxD1 / TO00 / TRGCLKB | Primary UART receive and timer output - enables full-duplex comms and PWM generation |
| P10–P15 | SPI/I²C/UART peripherals | Configurable CSI (SPI), I²C, and UART channels - allows flexible interface assignment via PIO redirection registers |
| P16/P17 | INTP5/INTP4, TO01/TO02, TRDIOC0/TRDIOA0 | Dedicated interrupt/timer I/O - supports encoder input, pulse counting, and synchronous peripheral triggering |
| P30/P31 | RTC1HZ / INTP3 / TI03 / TO03 | Real-time clock output and timer I/O - provides 1 Hz timebase and dual-edge capture for motor commutation |
| P50/P51 | RxD0/TxD0 / INTP1/INTP2 / TOOLRxD/TOOLTxD | On-chip debug UART - enables programming and real-time trace without external debug probes |
| REGC | Regulator capacitor terminal | Requires 0.47–1 µF capacitor to VSS - stabilizes internal voltage regulator for low-noise analog operation |
| VDD/VSS | Power supply pins | Single 1.6–5.5 V supply - eliminates need for separate analog/digital rails in cost-sensitive designs |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power HALT/STOP modes | Reduces current to 0.60 μA (RTC + LVD only) - extends battery life in always-on monitoring systems |
| Background data flash rewrite | Enables firmware updates or calibration storage while executing application code - no system interruption required |
| Event Link Controller (ELC) | Direct hardware linking of 19–26 peripheral events - eliminates CPU polling and ISR overhead in time-critical sequences |
| Hardware Data Transfer Controller (DTC) | Offloads memory transfers (e.g., ADC → RAM, UART TX buffer → peripheral) - frees CPU for computation |
| On-chip high-accuracy oscillator | ±1.0% frequency tolerance over -20 to +85°C - removes need for external crystal in non-precision timing apps |
| Integrated RTC with calendar | 99-year date/time tracking, alarm, and clock correction - supports timestamping and scheduled wake-up without external RTC IC |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop BLDC motor control in HVAC blowers or pump drivers requiring precise commutation timing and fault monitoring. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, reading hall sensors/encoders via P16/P17, generating PWM via TO01/TO02, and managing overcurrent protection via LVD interrupts. Use Value: Integrated ELC links timer outputs directly to ADC triggers and PWM reload events - ensures sub-microsecond synchronization without CPU latency. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and CO₂ data for wireless transmission every 10 minutes. IC Role / Device Role / Timing Role: System-on-chip managing sensor I²C reads, 10-bit ADC conversions, RTC-based wake-up scheduling, and UART/Bluetooth interface control. Use Value: 0.60 μA STOP mode with RTC active extends 2000 mAh battery life beyond 3 years - eliminating frequent maintenance. |
| Automotive Body Electronics | Home Appliance Control |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN bus communication and EEPROM emulation. IC Role / Device Role / Timing Role: LIN transceiver host (via UART with LIN support), data flash manager for seat position memory, and GPIO controller for motor drivers and LEDs. Use Value: 8 KB data flash with 1M write cycles enables robust wear-leveling for user preference storage - meeting AEC-Q100 reliability requirements. | Use Scenario: Washing machine main control board handling water level sensing, motor phase control, heater management, and UI display. IC Role / Device Role / Timing Role: Real-time coordinator using TAU timers for motor phase sequencing, ADC for pressure sensor feedback, and DTC for DMA-like transfer of touch panel scan data. Use Value: Single 3.3 V supply operation simplifies power design - reducing BOM cost versus dual-rail MCUs requiring separate analog regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F104BDGNA#40 | 64 KB flash, 5.5 KB RAM, same 32-pin HWQFN package and G-grade temp range | Lower memory capacity limits firmware complexity - suitable for simpler control tasks without OTA updates | Select when application firmware fits within 64 KB and cost sensitivity outweighs future scalability needs |
| R5F104BGNA#40 | 128 KB flash, 16 KB RAM, identical pinout and peripheral set | Higher memory headroom supports larger RTOS, crypto libraries, or dual-bank firmware updates | Choose for designs requiring field-upgradable firmware or enhanced feature sets without layout change |
Compared with R5F104BDGNA#40, the R5F104BEGNA#40 offers 32 KB more flash and 6.5 KB more RAM for enhanced firmware resilience and feature integration; versus R5F104BGNA#40, it trades 32 KB flash for lower unit cost while retaining identical peripheral functionality and industrial temperature qualification.
Availability
R5F104BEGNA#40 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, automotive body electronics, and home appliance control requiring stable component supply across extended product lifecycles.
Supply support for R5F104BEGNA#40 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 targets cost-sensitive, ultra-low-power general-purpose applications - delivering high integration and energy efficiency for industrial automation, consumer appliances, and sensor edge devices.
FAQ
What is the maximum operating frequency and core performance of the R5F104BEGNA#40?
The R5F104BEGNA#40 operates at up to 32 MHz and delivers 44 DMIPS using the RL78 32-bit CISC core with 3-stage pipeline. Its minimum instruction execution time is 0.03125 µs at 32 MHz with the high-speed on-chip oscillator enabled, making it suitable for real-time control loops in motor and sensor applications where deterministic timing is critical.
Does the R5F104BEGNA#40 support real-time clock functionality with calendar features?
Yes, the R5F104BEGNA#40 includes a dedicated real-time clock (RTC) module supporting calendar functions for up to 99 years, alarm generation, and clock correction. It operates in STOP mode with only 0.60 μA current draw when paired with the low-voltage detector (LVD), enabling accurate timekeeping in battery-backed applications without external RTC ICs.
What package type and pin count does the R5F104BEGNA#40 use?
The R5F104BEGNA#40 uses a 32-pin HWQFN package measuring 6 × 6 mm with 0.5 mm pitch and an exposed die pad. This compact, thermally efficient package is qualified for industrial applications and supports high-density PCB layouts while maintaining signal integrity for mixed-signal operation.
How much flash and RAM memory does the R5F104BEGNA#40 provide?
The R5F104BEGNA#40 integrates 96 KB of on-chip code flash memory and 12 KB of RAM. It also includes 8 KB of data flash memory rated for 1,000,000 write cycles, supporting reliable parameter storage and firmware updates with background operation capability - all essential for long-lifecycle industrial deployments.
Is the R5F104BEGNA#40 qualified for industrial temperature operation?
Yes, the R5F104BEGNA#40 is rated for operation from -40°C to +105°C (G-grade), making it suitable for under-hood automotive modules, industrial motor drives, and factory automation equipment where ambient temperatures exceed standard commercial ranges. This qualification is confirmed in Renesas' official ordering information and datasheet specifications.
R5F104BEGNA#40 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 32-WFQFN Exposed Pad
- Series:
- RL78/G14
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 2.4V ~ 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#40 FAQ
1.How can I place an order for R5F104BEGNA#40 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F104BEGNA#40 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#40 reliable?
The price and inventory of R5F104BEGNA#40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F104BEGNA#40 is usually 5 days.
3.What payment methods are accepted for R5F104BEGNA#40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F104BEGNA#40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F104BEGNA#40?
R5F104BEGNA#40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F104BEGNA#40 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#40?
For technical support, including R5F104BEGNA#40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F104BEGNA#40 requirements.
6.How does Aetrix verify that R5F104BEGNA#40 is sourced from the original manufacturer or authorized distributors?
All R5F104BEGNA#40 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#40 meets industry standards.
7.What is the process for return or replacement of R5F104BEGNA#40?
All R5F104BEGNA#40 units undergo pre-shipment inspection (PSI). If there is an issue with R5F104BEGNA#40, 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#40 part is unused and in its original packaging.
Return procedure for R5F104BEGNA#40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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