The AT24C02 is a 2-Kbit (256 x 8) I2C-compatible serial EEPROM, operating from 1.7V to 5.5V. It provides a small, low-cost non-volatile memory for configuration, calibration, and identification data in embedded designs.
Product Overview
The AT24C02 is part of the widely used AT24Cxx I2C EEPROM family, offering a simple two-wire interface that minimizes pin count and PCB routing. Organized as 256 words of 8 bits, it is ideal for storing system parameters, serial numbers, and user settings that must survive power loss.
With an industry-standard pinout and broad voltage range, the AT24C02 is easy to integrate with microcontrollers and is frequently used as a drop-in for equivalent 2K-bit I2C EEPROMs across many manufacturers.
Key Features
- – 2-Kbit (256 x 8) I2C serial EEPROM density
- – 2-wire I2C (TWI) serial interface
- – Wide supply voltage: 1.7V – 5.5V (verify specific grade)
- – Clock speed: up to 400 kHz (fast mode)
- – 8-byte page write buffer
- – Low-power standby and active current
- – Hardware write protection option
- – Multiple device addressing on a single bus
Technical Specifications
| Parameter | Specification |
|---|---|
| Density | 2 Kbit (256 x 8) |
| Interface | I2C (2-wire) |
| Supply Voltage | 1.7V – 5.5V (verify specific grade with manufacturer datasheet) |
| Clock Frequency | 400 kHz (fast mode) |
| Page Size | 8 bytes |
| Write Cycles | 1,000,000 (typical, verify with datasheet) |
| Data Retention | 100 years (typical, verify with datasheet) |
| Package | SOIC-8 / TSSOP-8 / SOT23-5 (verify ordering code with manufacturer datasheet) |
| Operating Temperature | -40°C to +85°C (verify grade) |
| Compliance | RoHS / REACH (verify with manufacturer datasheet) |
Applications
– Consumer electronics configuration storage
– System calibration and parameter data
– Device serial numbers and identification
– Embedded systems and sensor modules
– Industrial control boards
Why Choose Newfly Electronics
– Verified sourcing from ISO9001-certified manufacturers
– MOQ flexibility with small-quantity and prototype sourcing support
– Alternative-part and cross-reference service for the AT24Cxx family
– Full-board BOM sourcing to consolidate your component purchasing
– RoHS / REACH documentation support for compliance filing
FAQ
Q: Is AT24C02 interchangeable between manufacturers?
A: The AT24C02 pinout and command set are industry-standard, but voltage grade, speed, and package should be confirmed against the specific manufacturer datasheet.
Q: How many AT24C02 devices can share one I2C bus?
A: Multiple devices can be addressed on the same bus via address pins; the exact count depends on the package and address configuration.
Q: Do you support low-volume purchases?
A: Yes. We provide small-quantity and prototype sourcing with MOQ flexibility.
