Microchip Technology AT24C02-10TI-1.8-T

Overview

AT24C02-10TI-1.8-T from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz I²C bus speed at 1.8V, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage and battery-powered IoT node configuration memory.

For engineers reviewing the AT24C02-10TI-1.8-T datasheet, AT24C02-10TI-1.8-T pinout, AT24C02-10TI-1.8-T application, or AT24C02-10TI-1.8-T equivalent, key selection criteria include 1.8V minimum supply compatibility, industrial temperature range (−40°C to +85°C), TSSOP-8 package footprint, and page-write capability with 8-byte boundaries.

Technical Context

The AT24C02-10TI-1.8-T implements a standard two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-trigger inputs for noise immunity, and bi-directional data transfer protocol. Its internal architecture organizes 256 words of 8-bit data across 32 pages of 8 bytes each, requiring an 8-bit word address for random access.

Device addressing uses hard-wired A0–A2 pins to support up to eight AT24C02 devices on one bus. The WP pin enables hardware-level write protection: tied to VCC, it locks the full 2K array; tied to GND, normal read/write operations proceed. Standby current is specified at 3 µA max under 1.8V operation.

Key Specifications

Pinout & Package

AT24C02-10TI-1.8-T is housed in an 8-lead TSSOP package (package code 8T), measuring 3.0 mm × 4.4 mm × 1.2 mm max height, with 0.65 mm lead pitch and gull-wing leads. This surface-mount package supports automated assembly and offers improved thermal performance over PDIP.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Compared with M24C02-RMN6TP and BR24G02NUX-10TR, the AT24C02-10TI-1.8-T prioritizes proven industrial qualification and predictable 100 kHz timing at 1.8V over raw speed or ECC-making it ideal for cost-sensitive, high-volume industrial control designs where timing margin and supply stability are primary concerns.

Availability

AT24C02-10TI-1.8-T is available at Aetrix Electronics and suitable for industrial sensor calibration, IoT edge node configuration, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AT24C02-10TI-1.8-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions, with a focus on embedded control and connectivity.

The AT24Cxx family was designed for low-power, space-constrained applications requiring reliable, byte-addressable nonvolatile storage-targeting industrial, automotive, and consumer electronics where I²C simplicity and voltage flexibility are critical.

FAQ

What is the maximum I²C clock frequency supported by AT24C02-10TI-1.8-T at 1.8V?

The AT24C02-10TI-1.8-T supports a maximum I²C clock frequency of 100 kHz when operating at 1.8V. This is explicitly specified in the AC Characteristics table under "2.7-, 2.5-, 1.8-volt" conditions. At higher supply voltages (e.g., 5.0V), the device supports up to 400 kHz-but that rating does not apply to the AT24C02-10TI-1.8-T variant, which is characterized and guaranteed for 100 kHz at 1.8V.

Does AT24C02-10TI-1.8-T support partial page writes?

Yes, the AT24C02-10TI-1.8-T supports partial page writes within its 8-byte pages. After initiating a page write sequence, the internal address counter increments automatically for each byte written, wrapping within the same page boundary. Writing fewer than 8 bytes in a single transaction is fully compliant and commonly used for updating scattered configuration fields without overwriting adjacent data.

What is the function of the WP pin on AT24C02-10TI-1.8-T?

The WP (Write Protect) pin on AT24C02-10TI-1.8-T provides hardware-level write inhibition. When pulled high to VCC, it disables all write operations-including byte, page, and erase commands-to the entire 2K-bit memory array. When grounded, normal read and write functions operate. This feature prevents inadvertent corruption during power-up/down or firmware glitches.

Is AT24C02-10TI-1.8-T compatible with standard I²C protocol?

Yes, the AT24C02-10TI-1.8-T implements a standard two-wire I²C interface compliant with Philips I²C-bus specification Rev. 3.0. It supports START/STOP conditions, 7-bit addressing (with fixed 1010xxx prefix), ACK/NACK handshaking, and repeated START-all without requiring custom drivers. Its open-drain SDA/SCL pins and Schmitt-trigger inputs ensure interoperability with standard I²C masters.

What package type is used for AT24C02-10TI-1.8-T?

The AT24C02-10TI-1.8-T uses an 8-lead TSSOP (Thin Shrink Small Outline Package), designated as package code 8T. Its dimensions are 3.0 mm × 4.4 mm × 1.2 mm max height, with 0.65 mm lead pitch and gull-wing leads-optimized for high-density PCB layouts and automated SMT assembly.