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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersR5F100LEDFB#50
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R5F100LEDFB#50 - Renesas Electronics America Inc

Manufacturer Part Number
R5F100LEDFB#50
Manufacturer
Renesas Electronics Corporation
Allelco Part Number
98D-R5F100LEDFB#50
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
7,224 pcs available, New & Original
Parts Description
IC MCU 16BIT 64KB FLASH 64LQFP
Package
64-LFQFP (10x10)
Data sheet
R5F100LEDFB#50.pdf
RoHs Status
ROHS3 Compliant
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Specifications

R5F100LEDFB#50 Tech Specifications
Renesas Electronics America Inc - R5F100LEDFB#50 technical specifications, attributes, parameters and parts with similar specifications to Renesas Electronics America Inc - R5F100LEDFB#50

Product Attribute Attribute Value
Manufacturer Renesas Electronics Corporation
Voltage - Supply (Vcc/Vdd) 1.6V ~ 5.5V
Supplier Device Package 64-LFQFP (10x10)
Speed 32MHz
Series RL78/G13
RAM Size 4K x 8
Program Memory Type FLASH
Program Memory Size 64KB (64K x 8)
Peripherals DMA, LVD, POR, PWM, WDT
Package / Case 64-LQFP
Package Tape & Reel (TR)
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 48
Mounting Type Surface Mount
EEPROM Size 4K x 8
Data Converters A/D 12x8/10b
Core Size 16-Bit
Core Processor RL78
Connectivity CSI, I²C, LINbus, UART/USART
Base Product Number R5F100

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 3A991A2
HTSUS 8542.31.0001

Frequently Asked Questions(FAQ)

How does the R5F100LEDFB#50 compare to other RL78/G13 family variants in terms of program memory and peripheral integration for low-power embedded applications?
The R5F100LEDFB#50 offers 64KB of FLASH program memory and 4KB of RAM, providing sufficient code space for moderately complex control algorithms. Compared to lower-memory variants like the R5F100LEAFA#50 (which has 32KB FLASH), this device supports larger firmware stacks and more extensive peripheral state management without requiring external memory. Its integrated peripherals—including 48 I/O pins, DMA support, and multiple communication interfaces such as I2C, UART, and LINbus—reduce reliance on external components, which is advantageous in space-constrained designs. However, when compared to higher-end RL78/G14 devices with up to 128KB FLASH, the R5F100LEDFB#50 may require careful firmware optimization if future scalability is a concern.
What are the key voltage and current considerations when powering the R5F100LEDFB#50 in battery-operated systems operating at 3.3V?
The R5F100LEDFB#50 operates from 1.6V to 5.5V, making it suitable for 3.3V logic systems commonly used in industrial sensors and portable devices. At 3.3V and 32MHz operation, typical active current consumption ranges between 1–3 mA per MHz, depending on instruction mix and peripheral usage. In low-power modes such as Sleep or Deep Sleep, current can drop below 1 µA, extending battery life significantly. Designers should ensure stable supply rails with adequate decoupling near Vcc/Vdd pins to prevent noise-induced resets, especially given the device’s sensitivity to voltage drops during wake-up sequences.
Can the R5F100LEDFB#50 drive capacitive loads directly through its GPIOs, and what precautions should be taken in high-speed switching applications?
No, the R5F100LEDFB#50 does not have built-in drivers capable of driving significant capacitive loads directly. While it can source or sink up to 20 mA per pin under datasheet conditions, inductive or capacitive loads exceeding this threshold—such as long PCB traces or external FET gates—require external buffering or level-shifting circuitry. For high-speed digital signals, parasitic capacitance on output lines can lead to increased rise/fall times and electromagnetic interference. It is recommended to use series termination resistors (e.g., 22–100 Ω) and limit trace lengths to minimize reflections and ringing.
How does the internal oscillator configuration of the R5F100LEDFB#50 affect timing accuracy and system reliability in temperature-varying environments?
The R5F100LEDFB#50 uses an internal high-speed clock (HSI) that typically runs at 32 MHz with ±2% accuracy over -40°C to 85°C. While sufficient for many real-time control tasks, this tolerance may introduce timing drift in precision applications such as motor control or data sampling. If tighter timing is required, an external crystal oscillator can be used, though it increases board complexity and cost. Additionally, the presence of a low-frequency internal oscillator (LSI) enables timekeeping during sleep modes but is less accurate than external alternatives like 32.768 kHz crystals.
What are the implications of using the R5F100LEDFB#50 in automotive-grade applications, and does it meet relevant functional safety standards?
The R5F100LEDFB#50 is not qualified to AEC-Q100 Grade 1 (-40°C to +125°C), so its use in full automotive environments is limited to non-critical functions or prototyping. However, it is suitable for industrial control systems where -40°C to 85°C operation suffices. Functional safety certification (e.g., ISO 26262) cannot be claimed without additional validation, including failure mode analysis and diagnostic coverage testing. Designers considering automotive deployment must supplement with external monitoring circuits and implement software-based watchdog strategies to enhance robustness.
When selecting between the R5F100LEDFB#50 and alternative packages like LQFP-48, what trade-offs arise in terms of I/O availability and thermal performance?
The R5F100LEDFB#50 comes in a 64-LQFP package offering 48 usable I/O pins, whereas a 48-pin variant would reduce available GPIOs by approximately 20%. This limits expandability for projects requiring multiple sensor inputs or actuator controls. Thermally, all LQFP variants share similar junction-to-ambient resistance due to comparable die size and packaging; however, the 64-pin version allows better heat distribution across a larger pad array, potentially improving thermal dissipation in densely populated PCBs.
How should interrupt latency and context saving be managed in the R5F100LEDFB#50 when implementing real-time tasks with tight deadlines?
The R5F100LEDFB#50 features a nested vectored interrupt controller (NVIC) with prioritized interrupts, allowing deterministic response times typically under 10 clock cycles after the ISR vector is fetched. To minimize latency, critical ISRs should avoid branching to subroutines and instead execute minimal operations directly. Context saving during interrupts consumes stack space and adds overhead; thus, designers should keep ISR code concise and defer processing to main loop tasks via flagging mechanisms whenever possible.
What role does the watchdog timer (WDT) play in ensuring system stability when using the R5F100LEDFB#50, and how can it be configured safely?
The integrated watchdog timer prevents runaway code by resetting the MCU if software fails to periodically clear its counter. In the R5F100LEDFB#50, the WDT can be clocked by either the HSI or LSI oscillator, enabling operation even during deep sleep. Safe configuration requires setting an appropriate timeout period based on task execution intervals and ensuring the WDT service routine is executed reliably within each cycle. Failure to do so may result in unintended resets, particularly in fault-tolerant designs where partial recovery is preferred over full restart.
How does the analog-to-digital converter (ADC) module in the R5F100LEDFB#50 perform in noisy industrial environments, and what input conditioning is recommended?
The R5F100LEDFB#50 includes 12-channel, 8/10-bit SAR ADC with configurable resolution and sample-and-hold capability. While adequate for basic sensing tasks, noise immunity depends heavily on PCB layout and signal integrity. To improve accuracy, inputs should be filtered using RC networks or shielding, and conversion should occur during periods of minimal digital activity. Additionally, oversampling and averaging techniques can enhance effective resolution beyond nominal bit depth, mitigating quantization errors common in harsh environments.
What development tools and IDEs are officially supported for programming and debugging the R5F100LEDFB#50?
Renesas provides the e² studio IDE along with the E1/E20A ICE debugger for firmware development and real-time tracing on the R5F100LEDFB#50. These tools support C/C++ compilation, flash programming, and breakpoint debugging. Third-party options like IAR Embedded Workbench also offer partial compatibility, though full feature parity may vary. Successful toolchain integration typically requires installing Renesas-specific device packs and configuring clock settings to match hardware constraints such as oscillator selection and bus frequency division.

Parts with Similar Specifications

The three parts on the right have similar specifications to Renesas Electronics America Inc R5F100LEDFB#50

Product Attribute R5F100LEDFB#30 R5F100LEDFB#V0 R5F100LEDFB#X0 R5F100LEAFB#50
Part Number R5F100LEDFB#30 R5F100LEDFB#V0 R5F100LEDFB#X0 R5F100LEAFB#50
Manufacturer Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc
EEPROM Size - - - -
Speed - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Program Memory Size - - - -
Number of I/O - - - -
Connectivity - - - -
Core Size - - - -
Program Memory Type - - - -
Series - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply (Vcc/Vdd) - - - -
Oscillator Type - - - -
RAM Size - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Data Converters - - - -
Peripherals - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Core Processor - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C

R5F100LEDFB#50 Datasheet PDF

Download R5F100LEDFB#50 pdf datasheets and Renesas Electronics America Inc documentation for R5F100LEDFB#50 - Renesas Electronics America Inc.

PCN Packaging
Label Change-All Devices 01/Dec/2022.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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R5F100LEDFB#50 Image

R5F100LEDFB#50

Renesas Electronics America Inc
98D-R5F100LEDFB#50

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