24LC64-E/P Tech Specifications
Microchip - 24LC64-E/P technical specifications, attributes, parameters and parts with similar specifications to Microchip - 24LC64-E/P

Product Attribute	Attribute Value
Part Number	24LC64-E/P
Package	-
Description	-
Stock Condition	Get 8810 pcs available quantity at Allelco
Payment	PayPal / TT / Credit Card / Western Union
Allelco Certifications	ESD / ISO 9001 / ISO 13485 / ISO 28000

Product Attribute	Attribute Value
Manufacturer	Microchip Technology
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Parts Introduction

Manufacturer Part Number

24LC64-E/P

Manufacturer

microchip-technology

Introduction

The 24LC64-E/P is a 64Kbit Electrically Erasable Programmable Read-Only Memory (EEPROM) device manufactured by Microchip Technology. It is a non-volatile memory solution that can store and retrieve data efficiently through its I2C interface.

Product Features and Performance

64Kbit of EEPROM memory organized as 8K x 8

Supports I2C interface with a clock frequency up to 400 kHz

Fast access time of 900 ns

Supports write cycle time of 5 ms per word or page

Wide operating voltage range of 2.5V to 5.5V

Operates in a temperature range of -40°C to 125°C

Product Advantages

Non-volatile memory retains data even when power is removed

Simple I2C interface allows easy integration into various systems

High endurance of up to 1 million write cycles

Wide temperature range makes it suitable for diverse applications

Key Reasons to Choose This Product

Reliable and long-lasting EEPROM memory solution

Versatile interface and performance characteristics

Cost-effective and energy-efficient for space-constrained designs

Backed by Microchip's renowned quality and technical support

Quality and Safety Features

Manufactured using advanced EEPROM technology

Tested and qualified to meet strict quality and reliability standards

Compliant with relevant industry safety and environmental regulations

Compatibility

The 24LC64-E/P is compatible with systems and devices that support the I2C communication protocol.

Application Areas

Industrial control systems

Automotive electronics

Consumer electronics

Telecommunications equipment

Metering and monitoring devices

Embedded systems and IoT applications

Product Lifecycle

The 24LC64-E/P is an active product in our website's sales team portfolio. There are no immediate plans for discontinuation. However, customers are advised to contact our website's sales team for the latest information on product availability and potential alternative or equivalent models.

Frequently Asked Questions(FAQ)

How does the 24LC64-E/P’s write cycle time compare to typical EEPROM requirements for industrial control systems, and what implications does this have for data retention under continuous operation?: The 24LC64-E/P offers a page write cycle time of 5 ms at full operating voltage, which aligns with standard I²C EEPROM behavior but introduces measurable latency in high-throughput applications. In industrial control systems requiring frequent configuration updates—such as storing calibration parameters every few seconds—this delay can accumulate, potentially bottlenecking real-time responsiveness. While not prohibitive for infrequent writes, sustained write operations may necessitate wear-leveling algorithms or external buffering to prevent system stalls, especially when operating near the upper limit of its 400 kHz clock frequency.

What are the key differences between the 24LC64-E/P and the 24LC256 regarding memory density, interface compatibility, and power consumption in battery-backed sensor node designs?: The 24LC64-E/P provides 64 Kbit (8 KB) of storage using an 8K x 8 organization, while the 24LC256 offers 256 Kbit (32 KB), making it suitable for higher-data-volume applications like logging over longer durations. Both share the same I²C interface and voltage range (2.5V–5.5V), ensuring pin- and protocol-compatible drop-in replacements, though software addressing differs due to address line expansion in the larger device. Power-wise, both exhibit similar static current draw (~1 µA in standby), but the 24LC256’s larger array may consume marginally more energy during active writes due to increased internal circuitry, impacting battery life in ultra-low-power edge devices.

Can the 24LC64-E/P reliably operate across automotive temperature grades, and how does its endurance specification support long-term field deployment?: Yes, the 24LC64-E/P is rated from -40°C to +125°C, meeting AEC-Q100 Grade 2 requirements commonly used in automotive environments. With a guaranteed minimum endurance of 1 million write cycles per location (typically 100k–1M depending on exact process), it supports robust operation in systems like body control modules or infotainment where firmware settings or diagnostic logs are periodically updated. However, exceeding 10% duty cycle for writes over extended periods may accelerate wear; thus, architectural decisions such as wear leveling become critical beyond 10 years of continuous use.

Why might a designer choose the 24LC64-E/P over SPI-based alternatives when implementing a low-pin-count microcontroller solution?: The 24LC64-E/P uses only two GPIO pins (SDA and SCL) for full functionality, whereas most SPI EEPROMs require at least three additional lines (CS, MOSI, MISO). This makes the I²C variant ideal for microcontrollers with limited I/O availability or strict size constraints, such as wearable sensors or compact IoT modules. Although SPI generally enables faster individual byte writes, the 24LC64-E/P’s 5 ms page-write speed is sufficient for many non-real-time logging tasks, offering a favorable trade-off between pin count and performance without sacrificing reliability in 2.5V–5.5V systems.

How does the access time of 900 ns in the 24LC64-E/P affect read performance in interrupt-driven embedded applications?: The 900 ns access time refers to typical maximum read latency after address acknowledgment, which allows rapid retrieval of stored values upon request. In interrupt-driven architectures—where the CPU services events and retrieves saved states from memory—this short delay minimizes context-switch overhead. For example, reading a fault code immediately after an error condition requires sub-millisecond response; the 24LC64-E/P comfortably meets this need, enabling responsive diagnostics without introducing significant jitter or blocking delays in the main execution thread.

Is the 24LC64-E/P suitable for use in space-constrained PCB layouts despite being packaged in an 8-DIP format?: No, the 8-DIP (7.62 mm wide) package is inherently unsuitable for compact printed circuit boards due to its through-hole footprint and relatively large physical dimensions. Surface-mount variants like SOIC or TSSOP are preferred in modern designs. The tube packaging also implies historical distribution channels rather than optimized assembly compatibility. Therefore, while functionally adequate for prototyping or legacy systems, designers targeting miniaturized electronics should select alternative packages of the same base part number (e.g., 24LC64-E/SN) for manufacturability and board real estate efficiency.

What precautions should be taken when interfacing the 24LC64-E/P with 3.3V microcontrollers running at lower supply voltages within its 2.5V–5.5V range?: Since the 24LC64-E/P accepts inputs up to VCC + 0.5 V, direct connection to 3.3V logic is safe regardless of whether the EEPROM itself runs at 2.5V or 3.3V. However, bidirectional level shifting is unnecessary unless the host operates above 5.5V. Care must still be taken to ensure stable pull-up resistors on SDA/SCL lines match the chosen VCC (e.g., 4.7 kΩ for 3.3V), avoiding excessive current draw or degraded rise times at high frequencies. Additionally, brown-out protection on the MCU ensures clean I²C signaling during voltage transitions, preventing corrupted writes or bus lockups.

How does the moisture sensitivity level (MSL) rating of MSL 1 for the 24LC64-E/P influence handling procedures during reflow soldering?: As MSL 1 indicates unlimited shelf life and no special drying required before reflow, the 24LC64-E/P poses minimal risk of popcorning during lead-free soldering processes. This simplifies manufacturing workflows compared to higher MSL components, allowing immediate exposure to ambient humidity without pre-baking. Nevertheless, standard ESD precautions remain essential due to CMOS construction, particularly during manual handling in production environments where static discharge could compromise reliability over time.

In what scenarios would the 24LC64-E/P’s limited 8K x 8 organization present a constraint for firmware update storage?: Each 24LC64-E/P block holds only 8 KB, which restricts standalone use for storing complete firmware images. For instance, a bootloader requiring >8 KB would exceed capacity. Instead, it suits applications needing small, frequently updated parameters—like user preferences, serial numbers, or runtime counters—where incremental writes occur infrequently. If larger firmware segments must persist across resets, external NOR flash or partitioned use of multiple EEPROMs becomes necessary, adding complexity versus monolithic solutions.

How does the 24LC64-E/P’s RoHS compliance and REACH status impact procurement strategy in global markets?: Being RoHS3 compliant and REACH unaffected means the 24LC64-E/P contains no restricted substances (e.g., Pb, Cd, Hg >100 ppm) and is exempt from SVHC reporting obligations under EU regulations. This facilitates unrestricted sourcing across North America, Europe, and Asia without export restrictions or customs delays tied to hazardous materials declarations, streamlining supply chain logistics for mass-produced consumer or industrial products subject to international environmental standards.

What role does the device’s base product number (24LC64) play in ecosystem compatibility and third-party tool support?: The base product number 24LC64 denotes a family of devices sharing core architecture, enabling broad toolchain support—including Microchip’s MPLAB X IDE, avrdude for AVR platforms, and generic I²C scanners—across various packaging and speed grades. Designers benefit from consistent command sequences and driver libraries regardless of minor revisions (e.g., -E/P vs. -SN), reducing integration effort and accelerating time-to-market when substituting parts within the same family.

Given its 400 kHz maximum clock frequency, can the 24LC64-E/P maintain reliable communication over long cable lengths in industrial settings?: At 400 kHz, the 24LC64-E/P follows Fast-Mode I²C specifications, which typically limit practical cable lengths to under 1 meter unless buffered or shielded. In noisy industrial environments, signal integrity degrades quickly due to capacitance and EMI, potentially causing arbitration failures or corrupted ACKs. For longer distances, consider isolated I²C repeaters or transitioning to LVDS-based serial interfaces altogether, though this sacrifices the simplicity of direct MCU attachment inherent to the 24LC64-E/P’s design.

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
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.

Write a Review

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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

Use your express account for shipment if you have one.
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

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

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The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

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Contact us if you have any questions.

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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

24LC64-E/P

Microchip
41D-24LC64-E/P

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

24LC64-E/P - Microchip

Specifications

Parts Introduction

Manufacturer Part Number

Manufacturer

Introduction

Product Features and Performance

Product Advantages

Key Reasons to Choose This Product

Quality and Safety Features

Compatibility

Application Areas

Product Lifecycle

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

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.

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。

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

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

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

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.

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.

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.

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.

Write a Review

Shipment

Delivery Time

Delivery Cost

Delivery Method

QC (Quality Warranty)

Payment Support

Packaging

Electrostatic Discharge Protection and Handling

Certifications & Memberships

24LC64-E/P

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Feedback

Please refer to the English Version as our Official Version.