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HomeProductsIntegrated Circuits (ICs)Memory24LC515T-I/SM
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24LC515T-I/SM - Microchip Technology

Manufacturer Part Number
24LC515T-I/SM
Manufacturer
Microchip Technology
Allelco Part Number
32D-24LC515T-I/SM
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
9,642 pcs available, New & Original
Parts Description
IC EEPROM 512KBIT I2C 8SOIJ
Package
8-SOIJ
Data sheet
24LC515T-I/SM.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 9642
  • Unit Price: $1.499
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.499 $1.50
10+ $1.464 $14.64
30+ $1.441 $43.23
100+ $1.417 $141.70
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

24LC515T-I/SM Tech Specifications
Microchip Technology - 24LC515T-I/SM technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - 24LC515T-I/SM

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-SOIJ
Series -
Package / Case 8-SOIC (0.209', 5.30mm Width)
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C (TA)
Product Attribute Attribute Value
Mounting Type Surface Mount
Memory Type Non-Volatile
Memory Size 512Kbit
Memory Organization 64K x 8
Memory Interface I²C
Memory Format EEPROM
Clock Frequency 400 kHz
Base Product Number 24LC515
Access Time 900 ns

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.32.0051

Parts Introduction

24LC515T-I/SM Image
24LC515T-I/SM (1)

Manufacturer Part Number

24LC515T-I/SM

Manufacturer

Microchip Technology

Introduction

The 24LC515T-I/SM is a 512Kbit Electrically Erasable PROM from Microchip Technology designed for non-volatile memory storage.

Product Features and Performance

512Kbit memory size

64K x 8 memory organization

I2C serial interface

400 kHz clock frequency

Write cycle time of 5ms for word or page

Access time of 900 ns

EEPROM technology

Product Advantages

Robust non-volatile memory retention

Wide voltage supply range from 2.5V to 5.5V

Operational across wide temperature range from -40°C to 85°C

Highly reliable with endurance and data retention characteristics

Key Technical Parameters

Backup Memory

I2C interface with standard and fast mode (100 kHz / 400 kHz)

64-byte page write buffer

More than 1 million write cycles

Data retention greater than 200 years

Quality and Safety Features

ESD protection

Latch-up performance meets or exceeds 100 mA per JESD 78, Class II

Compatibility

Compatible with I2C memory interface specifications

Application Areas

Industrial and commercial data storage systems

Medical devices

Consumer electronics

Automotive systems

Telecommunications equipment

Product Lifecycle

Active product status

Long-term availability with no immediate discontinuation

Reasons to Choose This Product

High-density EEPROM memory with a significant storage capacity

Low-power consumption suitable for battery-operated devices

Stable operation across extreme temperatures and varying voltage supplies

Efficient and reliable I2C communication protocol

Durable and trusted manufacturing from Microchip Technology

Strategic choice for applications that require frequent data alterations without power consumption

Frequently Asked Questions(FAQ)

How does the 24LC515T-I/SM compare to other 512Kbit I²C EEPROMs in terms of write cycle endurance and data retention under typical operating conditions?
The 24LC515T-I/SM offers a write cycle endurance of 1,000,000 cycles and retains data for a minimum of 200 years at 85°C, which aligns with industry benchmarks for high-reliability serial EEPROMs. While alternatives like the 24AA512T-I/SM offer similar retention, some automotive-grade variants such as the AT24C512C may provide slightly higher endurance but often operate over extended temperature ranges. However, the 24LC515T-I/SM balances performance, cost, and availability without requiring specialized packaging, making it suitable for industrial control systems where longevity and reliability are critical.
What are the key differences between the 24LC515T-I/SM and competing devices like the CAT24C512XI-T2 when used in battery-backed memory applications?
The 24LC515T-I/SM uses a standard I²C interface with 400 kHz clock speed and operates from 2.5V to 5.5V, while the CAT24C512XI-T2 supports lower supply voltages down to 1.7V and includes an additional hardware hold feature. In battery-backed designs, this voltage range difference can reduce power consumption during sleep modes, but the 24LC515T-I/SM’s wider operating voltage simplifies interface compatibility across mixed-voltage systems. Both offer comparable page sizes and access times, so selection depends more on system-level voltage constraints than raw performance.
Can the 24LC515T-I/SM be used in real-time logging applications requiring frequent writes, and what design considerations should be taken into account?
Yes, the 24LC515T-I/SM supports up to 64-byte page writes with a maximum write cycle time of 5 ms per page, enabling efficient logging in moderate-throughput scenarios. For continuous logging at intervals faster than 5 ms, wear leveling must be implemented in firmware to distribute erase/write cycles across different memory sectors. Without such management, localized wear could exceed the 1 million cycle limit prematurely. Additionally, power-fail protection circuitry is recommended to prevent partial writes during brownout events.
How does the 900 ns access time of the 24LC515T-I/SM impact system performance in microcontroller-based data acquisition systems?
With a typical access time of 900 ns, the 24LC515T-I/SM allows direct read operations without significant wait states in most microcontrollers running above 4 MHz. This enables responsive data retrieval during polling loops or interrupt-driven reads. Compared to slower EEPROMs exceeding 2 µs access, this reduces CPU overhead by up to 50% in tight timing loops, improving overall throughput in sensor data buffering or configuration storage applications.
What is the significance of the MSL 1 classification for the 24LC515T-I/SM in high-volume manufacturing environments?
MSL 1 indicates that the 24LC515T-I/SM is moisture-insensitive and can be exposed to ambient conditions indefinitely after assembly reflow without requiring bake-out procedures. This simplifies production scheduling and reduces handling costs in automated assembly lines, especially in contract manufacturing settings where rapid turnover is common. It also minimizes risk of popcorning during thermal cycling, enhancing yield in lead-free soldering processes.
How does the 8-SOIJ package of the 24LC515T-I/SM affect PCB layout compared to smaller footprint alternatives like TSSOP or DFN packages?
The 8-SOIJ package measures 5.3 mm x 3.9 mm with a body width of 0.41 mm, providing robust leads for improved mechanical stability compared to leadless packages. While larger than some modern compact formats, it facilitates easier hand-soldering and inspection during prototyping. However, in space-constrained designs, engineers may prefer alternatives like the 24FC512T-I/SM in smaller packages, though this comes at the cost of higher pin pitch and reduced solder joint reliability under vibration.
Is the 24LC515T-I/SM compatible with 3.3V logic levels, and what precautions are needed when interfacing with 5V microcontrollers?
Yes, the 24LC515T-I/SM accepts input voltages up to VCC + 0.5 V and operates reliably at 3.3V supply, ensuring full compatibility with 3.3V logic families. When connected to 5V microcontrollers, pull-up resistors on SDA and SCL lines must be chosen carefully—typically between 2.2 kΩ and 10 kΩ depending on bus capacitance and rise time requirements—to ensure proper logic-high thresholds without excessive current draw during low-level transitions.
What are the implications of using the 24LC515T-I/SM in systems with limited I²C address space, and how can addressing conflicts be mitigated?
As a standard I²C device, the 24LC515T-I/SM uses one of seven hardware address pins (A0–A2), limiting unique addresses to eight devices per bus. In dense systems requiring more than eight non-volatile memories, software-based bank switching or secondary buses become necessary. Alternatively, some microcontrollers support I²C address extension via GPIO pins, allowing up to 64 devices, but this increases firmware complexity. Careful planning during board bring-up helps avoid collisions early in development.
How does the 24LC515T-I/SM handle concurrent access attempts on the I²C bus, and what safeguards exist against data corruption?
The 24LC515T-I/SM implements internal arbitration and acknowledges only valid commands based on its assigned address. During simultaneous access, the I²C protocol itself governs collision resolution through clock stretching and lost arbitration detection. The device does not lock or queue commands internally; thus, designers must implement application-layer sequencing or use mutexes in multi-master environments to prevent race conditions that could lead to unintended writes or reads.
What role does the internal write cycle time of 5 ms play in system responsiveness when updating configuration settings?
Each byte or page write initiates a 5 ms internal programming cycle during which the device is busy and ignores new commands. This blocks further I²C transactions until completion, potentially delaying other tasks. To maintain responsiveness, firmware should initiate writes asynchronously and poll the ready status bit if available, or defer non-critical operations until the write completes. In contrast, volatile memories eliminate this delay but lose data on power loss, creating a fundamental trade-off in system design.
Are there any known limitations in using the 24LC515T-I/SM for cryptographic key storage, and what additional security measures are recommended?
The 24LC515T-I/SM lacks physical tamper resistance, encryption engines, or secure boot support, making it unsuitable for storing unprotected cryptographic keys. If used for non-sensitive metadata or initialization vectors, it suffices, but keys should reside in dedicated secure elements or trusted platform modules. Even then, firmware must enforce strict access controls and zeroize buffers post-use to mitigate side-channel risks in compromised environments.
How does the operating temperature range (-40°C to 85°C) of the 24LC515T-I/SM influence its suitability for outdoor or automotive applications?
The -40°C to 85°C rating meets basic industrial requirements but falls short of AEC-Q100 Grade 2 (up to 105°C) expected in many automotive subsystems. While acceptable for non-critical infotainment or body electronics, mission-critical systems may require extended-temp variants. That said, the 24LC515T-I/SM performs reliably within this range under normal conditions, provided PCB materials exhibit stable coefficients of thermal expansion to avoid solder fatigue during thermal cycling.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology 24LC515T-I/SM

Product Attribute 24LC512T-I/SMG 24LC515-I/SM 24LC512T-I/SM 24LC512T-I/ST16KVAO
Part Number 24LC512T-I/SMG 24LC515-I/SM 24LC512T-I/SM 24LC512T-I/ST16KVAO
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply - - - -
Clock Frequency - - - -
Memory Type - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Write Cycle Time - Word, Page - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Memory Size - - - -
Access Time - - - -
Memory Format - - - -
Memory Interface - - - -
Memory Organization - - - -
Technology - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad

24LC515T-I/SM Datasheet PDF

Download 24LC515T-I/SM pdf datasheets and Microchip Technology documentation for 24LC515T-I/SM - Microchip Technology.

Datasheets
Cylindrical Battery Holders.pdf
PCN Assembly/Origin
2.73KHz.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf Packing Changes 10/Oct/2016.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.
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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.


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


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Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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24LC515T-I/SM Image

24LC515T-I/SM

Microchip Technology
32D-24LC515T-I/SM

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

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