About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersR5F100LEAFB#10
R5F100LEAFB#10 Image
R5F100LEAFB#10 Image - 1
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

R5F100LEAFB#10 - Renesas Electronics America Inc

Manufacturer Part Number
R5F100LEAFB#10
Manufacturer
Renesas Electronics Corporation
Allelco Part Number
32D-R5F100LEAFB#10
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
25,295 pcs available, New & Original
Parts Description
IC MCU 16BIT 64KB FLASH 64LFQFP
Package
64-LFQFP (10x10)
Data sheet
R5F100LEAFB#10.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 25295
  • Unit Price: $1.017
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $1.017 $1.02
10+ $0.876 $8.76
30+ $0.788 $23.64
160+ $0.697 $111.52
480+ $0.656 $314.88
960+ $0.639 $613.44
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

R5F100LEAFB#10 Tech Specifications
Renesas Electronics America Inc - R5F100LEAFB#10 technical specifications, attributes, parameters and parts with similar specifications to Renesas Electronics America Inc - R5F100LEAFB#10

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 Tray
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

Parts Introduction

R5F100LEAFB#10 Image
R5F100LEAFB#10 (1)

Manufacturer Part Number

R5F100LEAFB#10

Manufacturer

Renesas Electronics Corporation

Introduction

Embedded microcontroller with a 16-bit RL78 core processor

Designed for a wide range of applications requiring low power consumption and high performance

Product Features and Performance

16-bit RL78 core processor

64KB program memory (FLASH)

4KB RAM

4KB EEPROM

12-bit 8-channel ADC

UART, LIN, CSI communication interfaces

DMA, PWM, WDT, and other peripherals

Wide operating voltage range of 1.6V to 5.5V

Operating temperature range of -40°C to 85°C

Product Advantages

Powerful 16-bit RL78 core for high-performance applications

Flexible communication interfaces for diverse connectivity needs

Low power consumption for battery-powered or energy-efficient designs

Wide temperature range for use in harsh environments

Key Technical Parameters

16-bit RL78 core processor

64KB program memory (FLASH)

4KB RAM

4KB EEPROM

12-bit 8-channel ADC

Operating voltage range: 1.6V to 5.5V

Operating temperature range: -40°C to 85°C

Quality and Safety Features

RoHS3 compliant

64-pin LQFP package

Compatibility

Compatible with the RL78/G13 series of microcontrollers

Application Areas

Suitable for a wide range of embedded applications, such as industrial control, home appliances, healthcare devices, and automotive electronics

Product Lifecycle

This product is currently in active production and is not nearing discontinuation.

Replacements and upgrades may be available within the RL78/G13 series.

Several Key Reasons to Choose This Product

High-performance 16-bit RL78 core processor for demanding applications

Flexible communication interfaces and peripheral set for diverse connectivity and control needs

Wide operating voltage and temperature range for use in various environments

Low power consumption for battery-powered or energy-efficient designs

RoHS3 compliance for environmental sustainability

Frequently Asked Questions(FAQ)

How does the R5F100LEAFB#10 handle power consumption in battery-operated embedded systems, and what design considerations are necessary to optimize its efficiency?
The R5F100LEAFB#10 operates over a wide supply voltage range of 1.6V to 5.5V, which allows flexibility in power source selection, including low-voltage coin-cell batteries. With an operating current typically around 120 µA/MHz at 32MHz in active mode, it offers moderate power efficiency suitable for medium-duty applications. However, for extended battery life, developers should leverage the RL78 core’s sleep modes—such as the HALT mode with current consumption as low as 0.4 µA—and disable unused peripherals. Additionally, using the internal oscillator instead of an external crystal reduces external component count and leakage, further enhancing efficiency. Proper PCB layout and decoupling near the Vcc pins also minimize noise-induced current spikes.
What are the key differences between the R5F100LEAFB#10 and other variants like the R5F100LEAFA#10 in terms of pinout and package compatibility?
While the R5F100LEAFB#10 uses a 64-pin LFQFP (10x10) package with a lead-free finish, the R5F100LEAFA#10 shares the same pinout and package dimensions but may differ in revision or minor electrical characteristics depending on manufacturing batch or quality grade. Both support identical core functionality and peripheral configurations, making them largely interchangeable in footprint-constrained designs. However, designers must verify specific variant documentation for differences in absolute maximum ratings or timing tolerances, especially when substituting across product lines.
Can the R5F100LEAFB#10 interface directly with standard I2C sensors without level shifting, and under what conditions might signal integrity degrade?
Yes, the R5F100LEAFB#10 includes an integrated I2C interface that supports standard-mode (100 kbps) and fast-mode (400 kbps) communication. Since the microcontroller can operate down to 1.6V, interfacing with 3.3V or 5V I2C devices requires careful attention to logic levels. Without built-in 5V tolerance on all GPIOs, bidirectional level translation or open-drain pull-ups with appropriate voltage biasing is recommended. Signal integrity issues may arise from long traces, lack of termination, or noise coupling into SDA/SCL lines—especially in high-impedance environments. Using series resistors (e.g., 100–470 Ω) and ensuring adequate decoupling improves robustness.
How should thermal performance be evaluated when deploying the R5F100LEAFB#10 in compact enclosures with limited airflow?
Although the R5F100LEAFB#10 is rated for -40°C to 85°C, continuous operation near the upper temperature limit under full load may require thermal analysis. The 64-LQFP package has a relatively small exposed pad area, so mounting on a solid ground plane helps dissipate heat. In sealed or high-density enclosures, worst-case current draw—up to 3.5 mA per MHz in peak scenarios—can generate measurable heat. Designers should simulate junction temperatures using tools like Renesas’ RL78 Thermal Calculator or estimate via I²R losses in power traces. If ambient temperature approaches 70°C+, derating execution speed or enabling sleep cycles during idle periods becomes advisable.
What memory architecture considerations apply when using the R5F100LEAFB#10 for real-time data logging with frequent EEPROM writes?
The R5F100LEAFB#10 contains 64KB of flash program memory and 4KB of EEPROM, which is shared among application code and data storage. Frequent write operations to EEPROM degrade endurance—typically rated for 100,000 cycles per byte. For real-time logging, minimizing write frequency through buffering in RAM (4KB available) and batch-writing to EEPROM every few seconds extends lifespan. Alternatively, storing logs in flash with wear-leveling algorithms reduces stress on EEPROM blocks. Developers must avoid writing to the same EEPROM location repeatedly; instead, implement circular buffer logic with periodic flush routines.
How does the R5F100LEAFB#10 compare to similar 16-bit MCUs in terms of interrupt latency and context switching overhead?
The RL78/G13 core in the R5F100LEAFB#10 features a deterministic interrupt response time of approximately 4 clock cycles upon edge detection, with full context saving occurring within 16 cycles at 32MHz. This results in sub-microsecond latency for critical interrupts like UART RX or PWM fault signals. Compared to older 8-bit architectures, the 16-bit data path enables faster ISR execution, though slightly higher overhead than ARM Cortex-M0+ cores due to simpler pipeline depth. When evaluating alternatives, consider whether reduced latency outweighs trade-offs in power or peripheral integration—especially in time-sensitive control loops.
Are there any known limitations when using the internal oscillator of the R5F100LEAFB#10 for precision timing applications such as motor control or communication protocols?
The R5F100LEAFB#10’s internal oscillator provides ±2% accuracy over temperature and voltage, which suffices for most non-critical tasks. However, for applications requiring tight timing—such as CAN, LINbus, or PWM generation—external crystals offer better stability (±10 ppm typical). The internal RC oscillator may drift significantly under voltage fluctuations or aging, affecting baud rate accuracy in UART or synchronization in multi-device networks. If cost or board space is constrained, compensation via software calibration or selecting a variant with factory-trimmed internal OSC can mitigate errors, but absolute precision demands external timing sources.
What development tools and debugging interfaces are officially supported for the R5F100LEAFB#10, and how do they impact debug session reliability?
The R5F100LEAFB#10 supports Renesas’ E2 Lite and E1 Emulator debug probes via the SWD interface, both compatible with e² studio IDE. These tools provide full visibility into registers, breakpoints, and real-time variable tracking. Debug sessions remain stable even with aggressive optimization flags (-O2), though enabling watchpoints on frequently accessed RAM regions may increase CPU load. When using third-party toolchains like IAR or GCC, ensure linker scripts correctly allocate memory sections for reliable flash programming. Interference from high-speed digital lines near JTAG pins should be minimized to prevent signal degradation during long debug sessions.
How can the DMA capability of the R5F100LEAFB#10 be effectively utilized to offload ADC sampling from the main CPU while maintaining sample integrity?
The R5F100LEAFB#10 includes a dedicated DMA controller that can transfer ADC conversion results directly to RAM without CPU intervention. By configuring the ADC to trigger on timer events and setting up a DMA channel to store samples into a pre-allocated buffer, the CPU remains free for processing or sleep modes. Care must be taken to align buffer addresses to word boundaries and manage overflow conditions via interrupt flags. Using double-buffering techniques allows background data processing while new samples accumulate, improving throughput for applications like sensor fusion or audio capture without sacrificing timing precision.
What precautions should be taken when replacing the R5F100LEAFB#10 with substitute parts like the R5F100LEAFB#30 in production designs?
Substitute parts such as the R5F100LEAFB#30 often share the same electrical and mechanical specifications but may differ in revision level, packaging origin, or environmental compliance. Key areas to verify include RoHS status, MSL rating (both are MSL 3), and absolute maximum ratings for voltage and temperature. While pin-compatible, firmware compiled for one variant may require recompilation due to subtle changes in startup code or fuse settings. Always validate timing-critical functions and peripheral behavior under actual operating conditions before committing to substitution in volume production.
How does the watchdog timer configuration affect system reliability when using the R5F100LEAFB#10 in mission-critical embedded applications?
The R5F100LEAFB#10 features an independent watchdog timer (WDT) with programmable timeout periods from 128 kHz to 1 MHz, configurable via software. In safety-critical systems, enabling the WDT with a sufficiently short interval ensures recovery from software hangs. However, overly aggressive timeout values may cause false resets if ISRs exceed expected duration. Best practice involves initializing the WDT early in boot code, periodically refreshing it only after confirming normal operation, and disabling it during flash erase/program sequences. Combined with Power-on Reset (POR) and Low-Voltage Detection (LVD), this creates layered protection against transient faults.
Is it feasible to use the R5F100LEAFB#10 for cryptographic operations, and what hardware acceleration would improve security implementations?
The R5F100LEAFB#10 lacks dedicated cryptographic accelerators like AES or SHA engines found in higher-end MCUs. Implementing encryption/decryption in firmware consumes significant CPU cycles and increases vulnerability to side-channel attacks. For lightweight security needs—such as AES-128 in CBC mode—software libraries can run at ~10 KB/s on this device, sufficient for encrypting small payloads like sensor data packets. However, for robust security, consider pairing with external crypto ICs or migrating to Renesas’ RA family, which offers hardware-accelerated cryptography while retaining similar pinouts and development workflows.

Parts with Similar Specifications

The three parts on the right have similar specifications to Renesas Electronics America Inc R5F100LEAFB#10

Product Attribute R5F100LEAFB#50 R5F100LEAFA#10 R5F100LEAFB#V0 R5F100LEAFB#30
Part Number R5F100LEAFB#50 R5F100LEAFA#10 R5F100LEAFB#V0 R5F100LEAFB#30
Manufacturer Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc Renesas Electronics America Inc
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
RAM Size - - - -
Oscillator Type - - - -
Connectivity - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
EEPROM Size - - - -
Core Processor - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Peripherals - - - -
Number of I/O - - - -
Program Memory Size - - - -
Data Converters - - - -
Speed - - - -
Program Memory Type - - - -
Core Size - - - -

R5F100LEAFB#10 Datasheet PDF

Download R5F100LEAFB#10 pdf datasheets and Renesas Electronics America Inc documentation for R5F100LEAFB#10 - Renesas Electronics America Inc.

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

Customers Also Interested in

Recommended Products

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.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
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.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
R5F100LEAFB#10 Image

R5F100LEAFB#10

Renesas Electronics America Inc
32D-R5F100LEAFB#10

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB