AT24C02 Two Wire Serial EEPROM: Pinout, Equivalent and Datasheet
Memory IC AT24C02
The Microchip AT24C02 is a 2 kb serial EEPROM that communicates with the host controller using an I²C (2-wire) serial bus interface. It can retain DATA for at least 100 years with more than 1 million of erase and write cycles. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.

What Is EEPROM?
AT24C02 Pinout
The following figure is the diagram of AT24C02 Pinout.

Pinout
| Pin Number | Pin Name | Description |
| 1 | A0 | Address Input A0 |
| 2 | A1 | Address Input A1 |
| 3 | A2 | Address Input A2 |
| 4 | GND | GND |
| 5 | SDA | Serial DATA (I2C) |
| 6 | SCL | Serial CLOCK Input (I2C) |
| 7 | WP | Write Protect |
| 8 | VCC | Power Supply |
AT24C02 Pinout Configuration
AT24C02 CAD Model
The followings are AT24C02 Footprint and 3D Model.

Footprint

3D Model
AT24C02 Description
The Microchip AT24C02 is a 2 kb serial EEPROM that communicates with the host controller using an I²C (2-wire) serial bus interface. It can retain DATA for at least 100 years with more than 1 million of erase and write cycles. The low power and low voltage features make this EEPROM work into many commercial and consumer grade products. The read current is 0.4 mA typically with a 1mA of maximum. It requires 6uA of maximum current during standby condition.
The AT24C02 provides 2048 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 256 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential. The AT24C02 is available in space-saving 8-pin PDIP, 8-lead TSSOP and 8-lead JEDEC SOIC packages and is accessed via a 2-wire serial interface. In addition, the entire family is available in 5.0V (4.5V to 5.5V) versions.
The AT24C0 series has 5 chips in its name with different specification named 1A/02/04/08A/16A that provides 1024/2048/4096/8192/16384 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 128/256/512/1024/2048 words of 8 bits each. It is an essential device that can be used in many industrial and commercial applications in low-power and low-voltage domains. The IC supports upto 8 devices in its bus and can retain the data upto 100 years. The communication is done using the I²C protocol.
This article will introduce AT24C02 systematically from its features, pinout to its specifications, applications, also including AT24C02 datasheet and so much more.
AT24C02 Features
● Low-voltage and Standard-voltage Operation
◆ 5.0 (VCC = 4.5V to 5.5V)
● Internally Organized 256 x 8 (2K)
● 2-wire Serial Interface
● Schmitt Trigger, Filtered Inputs for Noise Suppression
● Bi-directional Data Transfer Protocol
● 100 kHz (1.8V, 2.5V, 2.7V) and 400 kHz (5V) Compatibility
● Write Protect Pin for Hardware Data Protection
● 8-byte Page (2K) Write Modes
● Partial Page Writes are Allowed
● Self-timed Write Cycle (10 ms max)
● High-reliability
◆ Endurance: 1 Million Write Cycles
◆ Data Retention: 100 Years
● Automotive Grade and Extended Temperature Devices Available
● 8-lead JEDEC SOIC, 8-pin PDIP and 8-lead TSSOP Packages
Specifications
- TypeParameter
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Through Hole - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
8-DIP (0.300, 7.62mm) - Supplier Device Package
The parameter "Supplier Device Package" in electronic components refers to the physical packaging or housing of the component as provided by the supplier. It specifies the form factor, dimensions, and layout of the component, which are crucial for compatibility and integration into electronic circuits and systems. The supplier device package information typically includes details such as the package type (e.g., DIP, SOP, QFN), number of pins, pitch, and overall size, allowing engineers and designers to select the appropriate component for their specific application requirements. Understanding the supplier device package is essential for proper component selection, placement, and soldering during the manufacturing process to ensure optimal performance and reliability of the electronic system.
8-PDIP - Memory TypesNon-Volatile
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
0°C~70°C TA - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube - Published2001
- Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Obsolete - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
Not Applicable - Voltage - Supply
Voltage - Supply refers to the range of voltage levels that an electronic component or circuit is designed to operate with. It indicates the minimum and maximum supply voltage that can be applied for the device to function properly. Providing supply voltages outside this range can lead to malfunction, damage, or reduced performance. This parameter is critical for ensuring compatibility between different components in a circuit.
4.5V~5.5V - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
AT24C02 - Memory Size
The memory capacity is the amount of data a device can store at any given time in its memory.
2Kb 256 x 8 - Clock Frequency
Clock frequency, also known as clock speed, refers to the rate at which a processor or electronic component can execute instructions. It is measured in hertz (Hz) and represents the number of cycles per second that the component can perform. A higher clock frequency typically indicates a faster processing speed and better performance. However, it is important to note that other factors such as architecture, efficiency, and workload also play a significant role in determining the overall performance of a component. In summary, clock frequency is a crucial parameter that influences the speed and efficiency of electronic components in processing data and executing tasks.
400kHz - Access Time
Access time in electronic components refers to the amount of time it takes for a system to retrieve data from memory or storage once a request has been made. It is typically measured in nanoseconds or microseconds and indicates the speed at which data can be accessed. Lower access time values signify faster performance, allowing for more efficient processing in computing systems. Access time is a critical parameter in determining the overall responsiveness of electronic devices, particularly in applications requiring quick data retrieval.
900ns - Memory Format
Memory Format in electronic components refers to the specific organization and structure of data storage within a memory device. It defines how data is stored, accessed, and managed within the memory module. Different memory formats include RAM (Random Access Memory), ROM (Read-Only Memory), and various types of flash memory. The memory format determines the speed, capacity, and functionality of the memory device, and it is crucial for compatibility with other components in a system. Understanding the memory format is essential for selecting the right memory module for a particular application or device.
EEPROM - Memory Interface
An external memory interface is a bus protocol for communication from an integrated circuit, such as a microprocessor, to an external memory device located on a circuit board.
I2C - Write Cycle Time - Word, Page
Write Cycle Time - Word, Page refers to the duration required to write data to a specific memory cell or a page of memory in electronic components, particularly in non-volatile memories like Flash or EEPROM. It indicates the time taken to complete a writing operation for a single word or an entire page of data. This parameter is crucial for determining the performance and speed of memory devices in applications where quick data storage is essential. It impacts the overall efficiency in data handling, affecting both read and write speeds in memory-related operations.
5ms - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
Non-RoHS Compliant
AT24C02 Functional Block Diagram
The following is the Block Diagram of AT24C02.

Block Diagram
AT24C02 Alternative ICs
Alternative products for AT24C02 EEPROM are listed below:
● DS2431+ one wire based EEPROM
● 24LCxxx based EEPROM
● AT28C64B 64 Kbit EEPROM
AT24C02 Equivalent
| Model number | Manufacturer | Description |
| M24C02-BN3/G | STMicroelectronics | 256X8 I2C/2-WIRE SERIAL EEPROM, PDIP8, PLASTIC, DIP-8 |
| AT24C02A-10PI | Atmel Corporation | EEPROM, 256X8, Serial, CMOS, PDIP8, 0.300 INCH, PLASTIC, DIP-8 |
| M24C02-BN3TP/G | STMicroelectronics | 256X8 I2C/2-WIRE SERIAL EEPROM, PDIP8, LEAD FREE, PLASTIC, DIP-8 |
| M24C02-BN3T | STMicroelectronics | 256X8 I2C/2-WIRE SERIAL EEPROM, PDIP8, PLASTIC, DIP-8 |
| M24C02-BN3TP | STMicroelectronics | 256X8 I2C/2-WIRE SERIAL EEPROM, PDIP8, LEAD FREE, PLASTIC, DIP-8 |
| AT24C02-10PA-5.0C | Atmel Corporation | EEPROM, 256X8, Serial, CMOS, PDIP8, 0.300 INCH, PLASTIC, MS-001BA, DIP-8 |
| IS24C02F-P | Integrated Silicon Solution Inc | EEPROM, 256X8, Serial, CMOS, PDIP8, 0.300 INCH, PLASTIC, DIP-8 |
| IS24C02-P | Integrated Silicon Solution Inc | EEPROM, 256X8, Serial, CMOS, PDIP8, 0.300 INCH, PLASTIC, DIP-8 |
| M24C02-BN3TG/G | STMicroelectronics | 256X8 I2C/2-WIRE SERIAL EEPROM, PDIP8, LEAD FREE, PLASTIC, DIP-8 |
| CAT24C02PI | Catalyst Semiconductor | EEPROM, 256X8, Serial, CMOS, PDIP8, 0.300 INCH, PLASTIC, DIP-8 |
How does the AT24C02 EEPROM work?
AT24C02 EEPROM works on start-stop conditions. The EEPROM gets ready to read or write when both the clock line and the data line change from high to low state. The EEPROM acquires the peripheral device address, the byte address, and the information which is to be stored. After the transmission, the operation is terminated. This is determined by the stop condition i.e both the lines of the I2C interface transits from low to high state.
AT24C02 Applications
● Data retention
● Consumer grade product
● Commercial grade product
● Communication systems
● Automobiles
● Consumer electronics
● Industrial applications
● Testing devices
AT24C02 Package
The following diagrams show the AT24C02 Package.

View A

View B

View C
AT24C02 Manufacturer
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.
Datasheet PDF
- Datasheets :
- PCN Packaging :
How many pins of AT24C02-10PC?
8 Pins.
What’s the operating temperature of AT24C02-10PC?
0°C~70°C TA.
What is the essential property of the AT24C02?
The Microchip AT24C02 is a 2 kb serial EEPROM that communicates with the host controller using an I²C (2-wire) serial bus interface. It can retain DATA for at least 100 years with more than 1 million of erase and write cycles.
PL602-21TI-R Clock Generator: Pinout, Equivalent and Datasheet12 March 2022358
2N7002V N-Channel MOSFET: Pinout, Datasheet and Application09 July 2021480
How Can We Use the 2N4403 Transistor? [FAQ]20 May 20222552
CR2032 Battery: Benefits, Pinout and Datasheet05 August 202131132
1N4148 VS 1N4007[FAQ]: What are the differences between them?06 May 202219809
LSM9DS1TR Gyroscope Magnetometer 9 Axis Sensor I²C SPI Output: Datasheet, Features, and Pinout07 April 20222454
OV7670 Camera Module: Datasheet, Specifications and Comparison05 November 202115226
TDA7266SA Amplifier: Diagram, Pinout, and Datasheet [Video&FAQ]31 December 202131286
How do Inductors Work?27 October 202513984
Switching Power Supply Debugging: 10 Most Common Problems26 December 202518647
Introduction to Light-emitting Diode23 October 20253993
The Reason for the Leakage Current of MOS Tube26 March 20227240
In-depth Analysis of the Global Semiconductor Supply Chain20 January 202212157
UTMEL 2024 Annual gala: Igniting Passion, Renewing Brilliance18 January 20243077
Working Principle and Development of Magnetic Sensors31 October 20253670
What Are Wi-Fi Modules and Their Uses in IoT Today04 June 2025722
Microchip Technology
In Stock
United States
China
Canada
Japan
Russia
Germany
United Kingdom
Singapore
Italy
Hong Kong(China)
Taiwan(China)
France
Korea
Mexico
Netherlands
Malaysia
Austria
Spain
Switzerland
Poland
Thailand
Vietnam
India
United Arab Emirates
Afghanistan
Åland Islands
Albania
Algeria
American Samoa
Andorra
Angola
Anguilla
Antigua & Barbuda
Argentina
Armenia
Aruba
Australia
Azerbaijan
Bahamas
Bahrain
Bangladesh
Barbados
Belarus
Belgium
Belize
Benin
Bermuda
Bhutan
Bolivia
Bonaire, Sint Eustatius and Saba
Bosnia & Herzegovina
Botswana
Brazil
British Indian Ocean Territory
British Virgin Islands
Brunei
Bulgaria
Burkina Faso
Burundi
Cabo Verde
Cambodia
Cameroon
Cayman Islands
Central African Republic
Chad
Chile
Christmas Island
Cocos (Keeling) Islands
Colombia
Comoros
Congo
Congo (DRC)
Cook Islands
Costa Rica
Côte d’Ivoire
Croatia
Cuba
Curaçao
Cyprus
Czechia
Denmark
Djibouti
Dominica
Dominican Republic
Ecuador
Egypt
El Salvador
Equatorial Guinea
Eritrea
Estonia
Eswatini
Ethiopia
Falkland Islands
Faroe Islands
Fiji
Finland
French Guiana
French Polynesia
Gabon
Gambia
Georgia
Ghana
Gibraltar
Greece
Greenland
Grenada
Guadeloupe
Guam
Guatemala
Guernsey
Guinea
Guinea-Bissau
Guyana
Haiti
Honduras
Hungary
Iceland
Indonesia
Iran
Iraq
Ireland
Isle of Man
Israel
Jamaica
Jersey
Jordan
Kazakhstan
Kenya
Kiribati
Kosovo
Kuwait
Kyrgyzstan
Laos
Latvia
Lebanon
Lesotho
Liberia
Libya
Liechtenstein
Lithuania
Luxembourg
Macao(China)
Madagascar
Malawi
Maldives
Mali
Malta
Marshall Islands
Martinique
Mauritania
Mauritius
Mayotte
Micronesia
Moldova
Monaco
Mongolia
Montenegro
Montserrat
Morocco
Mozambique
Myanmar
Namibia
Nauru
Nepal
New Caledonia
New Zealand
Nicaragua
Niger
Nigeria
Niue
Norfolk Island
North Korea
North Macedonia
Northern Mariana Islands
Norway
Oman
Pakistan
Palau
Palestinian Authority
Panama
Papua New Guinea
Paraguay
Peru
Philippines
Pitcairn Islands
Portugal
Puerto Rico
Qatar
Réunion
Romania
Rwanda
Samoa
San Marino
São Tomé & Príncipe
Saudi Arabia
Senegal
Serbia
Seychelles
Sierra Leone
Sint Maarten
Slovakia
Slovenia
Solomon Islands
Somalia
South Africa
South Sudan
Sri Lanka
St Helena, Ascension, Tristan da Cunha
St. Barthélemy
St. Kitts & Nevis
St. Lucia
St. Martin
St. Pierre & Miquelon
St. Vincent & Grenadines
Sudan
Suriname
Svalbard & Jan Mayen
Sweden
Syria
Tajikistan
Tanzania
Timor-Leste
Togo
Tokelau
Tonga
Trinidad & Tobago
Tunisia
Turkey
Turkmenistan
Turks & Caicos Islands
Tuvalu
U.S. Outlying Islands
U.S. Virgin Islands
Uganda
Ukraine
Uruguay
Uzbekistan
Vanuatu
Vatican City
Venezuela
Wallis & Futuna
Yemen
Zambia
Zimbabwe















