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HomeProductsIntegrated Circuits (ICs)Memory24LC64-E/SN
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24LC64-E/SN - Microchip Technology

Manufacturer Part Number
24LC64-E/SN
Manufacturer
Microchip Technology
Allelco Part Number
32D-24LC64-E/SN
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
51,640 pcs available, New & Original
Parts Description
IC EEPROM 64KBIT I2C 8SOIC
Package
8-SOIC
Data sheet
24LC64-E/SN.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 51640
  • Unit Price: $0.73
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
5+ $0.73 $3.65
50+ $0.605 $30.25
150+ $0.537 $80.55
500+ $0.459 $229.50
2500+ $0.425 $1,062.50
5000+ $0.409 $2,045.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

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

Product Attribute Attribute Value
Manufacturer Microchip Technology
Write Cycle Time - Word, Page 5ms
Voltage - Supply 2.5V ~ 5.5V
Technology EEPROM
Supplier Device Package 8-SOIC
Series -
Package / Case 8-SOIC (0.154', 3.90mm Width)
Package Tube
Operating Temperature -40°C ~ 125°C (TA)
Product Attribute Attribute Value
Mounting Type Surface Mount
Memory Type Non-Volatile
Memory Size 64Kbit
Memory Organization 8K x 8
Memory Interface I²C
Memory Format EEPROM
Clock Frequency 400 kHz
Base Product Number 24LC64
Access Time 900 ns

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.32.0051

Parts Introduction

24LC64-E/SN Image
24LC64-E/SN (1)

Manufacturer Part Number

24LC64-E/SN

Manufacturer

Microchip Technology

Introduction

The 24LC64-E/SN is a 64Kbit Electrically Erasable PROM from Microchip Technology, designed for the storage of non-volatile memory.

Product Features and Performance

Non-Volatile EEPROM

Memory Size 64Kbit

Memory Organization 8K x 8

I2C Serial Interface

Clock Frequency up to 400 kHz

5ms Write Cycle Time for Word or Page

900 ns Access Time

Wide Voltage Supply Range from 2.5V to 5.5V

Operating Temperature Range from -40°C to +125°C

Surface Mount 8-SOIC Package

Product Advantages

Robust storage solution with a wide voltage supply range

High-speed I2C communication interface

Durable over extreme temperature variations

Write cycle endurance and data retention

Key Technical Parameters

Memory Type: EEPROM

Memory Format: EEPROM

Memory Interface: I2C

Clock Frequency: 400 kHz

Voltage Supply: 2.5V to 5.5V

Operating Temperature: -40°C to 125°C

Quality and Safety Features

Reliable data retention rated at over 1 million write cycles

ESD protection and wide operating temperature range for industrial applications

Compatibility

Compatible with I2C bus specification

Easily interfaced with microcontrollers and processors that support I2C

Application Areas

Automotive systems

Industrial controls

Consumer electronics

Telecommunications equipment

Medical devices

Product Lifecycle

Active product status with ongoing manufacturer support

Potential future availability of replacements or upgrades depending on technological evolution

Several Key Reasons to Choose This Product

High-density EEPROM allowing for substantial non-volatile memory storage

Fast write capabilities that reduce downtime

Low-power consumption suitable for battery-powered devices

Reliable operation across a broad range of environmental conditions

Suitable for complex applications due to I2C serial interface compatibility

Easy to integrate into existing designs with SOIC package format.

Frequently Asked Questions(FAQ)

How does the 24LC64-E/SN compare to other I²C EEPROMs in terms of access time and write cycle performance when used in embedded systems requiring low-latency data updates?
The 24LC64-E/SN offers an access time of 900 ns, which is typical for standard I²C EEPROMs and sufficient for most non-time-critical applications. However, compared to faster serial memories like SPI-based devices or newer I²C variants with page write optimizations, it may introduce higher latency during random byte writes. Its 5ms write cycle time applies to both word and page operations, which is standard but longer than some modern alternatives supporting faster write bursts. In designs prioritizing speed, this could limit throughput under frequent update loads.
What are the implications of using the 24LC64-E/SN at the upper end of its operating voltage range (5.5V) in a mixed-voltage system interfacing with 3.3V microcontrollers?
Operating the 24LC64-E/SN at 5.5V while connected to a 3.3V microcontroller requires careful level-shifting due to potential overvoltage on input pins. While the device supports 2.5V to 5.5V supply, its I/O pins are not 5V-tolerant when powered below 5V. Applying 5.5V to a 3.3V logic line without protection risks damaging the IC. Therefore, bidirectional level translators are recommended unless the host controller can tolerate the higher input voltage, which most cannot. This adds complexity and cost to the design.
Can the 24LC64-E/SN reliably retain data over extended periods in industrial environments with temperature cycling between -40°C and 125°C?
Yes, the 24LC64-E/SN is specified for operation across -40°C to 125°C, indicating robust thermal stability. However, data retention beyond the rated lifetime depends on usage patterns and environmental stress. At full operating temperature extremes, Microchip typically guarantees 1 million write cycles and 200 years of data retention under ideal conditions. Prolonged exposure to 125°C accelerates oxide degradation, potentially reducing endurance. For critical applications, periodic data refreshes or error-correcting firmware may be necessary to ensure integrity.
How should system designers handle bus contention when multiple devices share the same I²C address space with the 24LC64-E/SN in a multi-slave configuration?
Since the 24LC64-E/SN uses fixed hardware addressing via A0–A2 pins, duplicate addresses must be avoided by setting unique pin combinations. If more than one device is needed, software-based addressing schemes or multiplexers are required. Alternatively, using different base models like the 24AA64 or 24FC64 (which use EEPROM vs. flash memory) allows leveraging their distinct default addresses. Without such differentiation, arbitration fails silently or causes bus lockups, leading to unreliable communication.
What trade-offs exist between using page writes versus byte-by-byte writes with the 24LC64-E/SN when updating configuration data in a power-constrained application?
Page writes on the 24LC64-E/SN allow up to 64 bytes per transaction, reducing overhead compared to individual byte writes that each incur start/stop conditions and command framing. However, page boundaries must be respected—writing across pages results in only the last page being updated. Additionally, each write operation consumes static current during the 5ms cycle, increasing power consumption if done frequently. In low-power designs, minimizing writes through buffering or batch updates is more effective than relying solely on page mode efficiency.
Is the 24LC64-E/SN suitable for applications requiring hot-swapping capability where the EEPROM might be inserted or removed during operation?
No, hot-swapping is not supported. The 24LC64-E/SN lacks internal protection circuitry against sudden disconnection during active communication. Abrupt removal while writing can corrupt data, cause bus contention, or damage the device due to backpowering effects. Proper handling requires ensuring all transactions complete before power-down and isolating the I²C lines during insertion/removal using series resistors or switches with enable control.
How does the 24LC64-E/SN’s clock frequency limitation of 400 kHz affect performance in high-speed logging applications compared to faster serial memories?
With a maximum clock frequency of 400 kHz, the 24LC64-E/SN provides a theoretical bandwidth of approximately 40 kB/s assuming optimal page writes. This limits sustained data throughput in high-volume logging scenarios where larger datasets must be written rapidly. Alternatives like SPI-based memories or I²C devices with higher speeds (e.g., 1 MHz modes) offer better performance. For moderate logging rates (< 20 kB/s), however, the 24LC64-E/SN remains viable with minimal latency impact.
What precautions should be taken when integrating the 24LC64-E/SN into a PCB layout to minimize noise susceptibility and ensure reliable operation in electrically noisy environments?
Place the 24LC64-E/SN close to the microcontroller to keep I²C traces short, reducing parasitic capacitance and susceptibility to electromagnetic interference. Use pull-up resistors appropriate for the bus capacitance (typically 2.2 kΩ for standard speed). Decouple the VCC and GND pins with a 0.1 µF ceramic capacitor near the package. Avoid routing digital signals parallel to SDA/SCL lines, and consider adding small series resistors (22–100 Ω) on the I²C lines to dampen ringing. These practices help maintain signal integrity under fast transitions and transient disturbances.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology 24LC64-E/SN

Product Attribute 24LC64-E/SN16KVAO 24LC64-E/SM 24LC64-I/SN 24LC64-E/ST16KVAO
Part Number 24LC64-E/SN16KVAO 24LC64-E/SM 24LC64-I/SN 24LC64-E/ST16KVAO
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Memory Organization - - - -
Memory Interface - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Technology - - - -
Write Cycle Time - Word, Page - - - -
Series - - - -
Clock Frequency - - - -
Access Time - - - -
Memory Format - - - -
Memory Size - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Memory Type - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Supply - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42

24LC64-E/SN Datasheet PDF

Download 24LC64-E/SN pdf datasheets and Microchip Technology documentation for 24LC64-E/SN - Microchip Technology.

PCN Design/Specification
24AA64/24FC64/24LC64 09/Apr/2022.pdf 24AA64/24FC64/24LC64 18/Mar/2022.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf MBB/Label Chgs 16/Nov/2018.pdf
PCN Assembly/Origin
2.73KHz.pdf

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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.

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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

  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
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Payment Support

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Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
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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
24LC64-E/SN Image

24LC64-E/SN

Microchip Technology
32D-24LC64-E/SN

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

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