Microchip Technology AT24C02-10TI-2.7-T

Overview

AT24C02-10TI-2.7-T from Microchip Technology (formerly Atmel) is a 2K-bit (256 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 100 kHz I²C bus speed, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is widely used in industrial sensor calibration storage and power meter configuration memory.

For engineers reviewing the AT24C02-10TI-2.7-T datasheet, AT24C02-10TI-2.7-T pinout, AT24C02-10TI-2.7-T application, or AT24C02-10TI-2.7-T equivalent, key selection considerations include its 2.7–5.5V supply range, 8-pin TSSOP package, 10 ms max write cycle time, and compatibility with microcontroller I²C peripherals requiring robust nonvolatile parameter storage under extended temperature conditions.

Technical Context

The AT24C02-10TI-2.7-T implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. It uses an 8-bit device address with three hard-wired A0–A2 pins enabling up to eight devices on one bus, and supports both byte and 8-byte page writes with automatic address incrementing within pages.

Its internal architecture organizes 256 bytes across 32 pages of 8 bytes each, requiring an 8-bit word address for random access. The WP pin provides hardware-level write protection for the full 2K array when pulled high, while standby current is limited to 4.0 µA at 2.7V over –40°C to +85°C industrial temperature range.

Key Specifications

Pinout & Package

AT24C02-10TI-2.7-T is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), measuring 3.0 mm × 4.4 mm × 1.2 mm max height, with gull-wing leads and 0.65 mm lead pitch. Pin 1 is marked by a dot or beveled corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with M24C02-RMN6TP and BR24G02NUX-10, AT24C02-10TI-2.7-T offers guaranteed industrial temperature operation in TSSOP-8 with deterministic 10 ms write timing and standardized A0–A2 addressing-making it optimal for fixed-function, long-lifecycle industrial control applications where reliability outweighs raw speed.

Availability

AT24C02-10TI-2.7-T is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body electronics, and medical diagnostics requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for AT24C02-10TI-2.7-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 components, and memory solutions, with a strong focus on embedded control and reliability-critical applications.

The AT24Cxx family was designed for low-power, I²C-based nonvolatile data storage in space-constrained and thermally demanding environments-targeting industrial, automotive, and consumer systems requiring robust, long-life memory.

FAQ

What is the maximum I²C clock frequency supported by AT24C02-10TI-2.7-T?

The AT24C02-10TI-2.7-T supports up to 100 kHz I²C clock frequency when operating within its 2.7–5.5V supply range. This is specified in the AC Characteristics table under fSCL for 2.7V operation. Higher speeds (e.g., 400 kHz) require ≥4.5V supply and are not valid for this -2.7-T variant. Firmware must respect tLOW/tHIGH timing limits to avoid bus errors.

How does the Write Protect (WP) pin function on AT24C02-10TI-2.7-T?

On AT24C02-10TI-2.7-T, the WP pin enables hardware-level write protection: when pulled high to VCC, it disables all write operations-including byte, page, and erase-to the full 2K memory array. When grounded, normal read/write functions operate. This behavior is electrically enforced and independent of I²C commands, making it ideal for safeguarding critical configuration data during power-up sequences.

What package type and dimensions does AT24C02-10TI-2.7-T use?

AT24C02-10TI-2.7-T uses an 8-lead TSSOP (Thin Shrink Small Outline Package), designated as package code 8T. Its footprint measures 3.0 mm × 4.4 mm with 0.65 mm lead pitch and maximum height of 1.2 mm. Pin 1 is identified by a beveled corner or dot; the package is RoHS-compliant and designed for reflow soldering per J-STD-020.

Can AT24C02-10TI-2.7-T be used in automotive applications?

Yes, AT24C02-10TI-2.7-T is qualified for industrial temperature operation (–40°C to +85°C) and meets AEC-Q200 stress test requirements when sourced as an automotive-grade variant. While the -TI suffix denotes industrial grade, its electrical robustness-including 6.25V absolute max VCC tolerance and noise-suppressed I/O-makes it suitable for body control, telematics, and infotainment subsystems where full AEC-Q100 qualification is not mandated.

What is the memory organization and addressing scheme of AT24C02-10TI-2.7-T?

AT24C02-10TI-2.7-T contains 256 bytes organized as 32 pages of 8 bytes each. It uses a 7-bit I²C slave address formed by fixed prefix "1010" plus A2/A1/A0 pins (e.g., 0x50 if all grounded). An 8-bit word address selects any byte; page writes auto-increment the lower 3 bits within the current page. Crossing page boundaries wraps to the start of the same page-not the next page.