AT24C02 Two Wire Serial EEPROM: Pinout, Equivalent and Datasheet

The following figure is the diagram of AT24C02 Pinout.

Pinout

AT24C02 Pinout Configuration

The followings are AT24C02 Footprint and 3D Model.

Footprint

3D Model

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.

● Low-voltage and Standard-voltage Operation

   ◆ 5.0 (V_CC = 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

Microchip Technology AT24C02-10PC technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology AT24C02-10PC.

The following is the Block Diagram of AT24C02.

Block Diagram

Alternative products for AT24C02 EEPROM are listed below:

● DS2431+ one wire based EEPROM

● 24LCxxx based EEPROM

● AT28C64B 64 Kbit EEPROM

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.

● Data retention

● Consumer grade product

● Commercial grade product

● Communication systems

● Automobiles

● Consumer electronics

● Industrial applications

● Testing devices

The following diagrams show the AT24C02 Package.

View A

View B

View C

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.

Download datasheets and manufacturer documentation for Microchip Technology AT24C02-10PC.