Microchip Technology 24LC02BT-E/OT16KVAO

Overview

24LC02BT-E/OT16KVAO from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 8-byte page buffer, and operation from 2.5V to 5.5V. It supports 400 kHz clock frequency, delivers ≤1 mA active current and ≤5 µA standby current at extended temperature (–40°C to +125°C), and is used for storing calibration data, configuration settings, and device identifiers in industrial sensor nodes and power management ICs.

For engineers reviewing the 24LC02BT-E/OT16KVAO datasheet, 24LC02BT-E/OT16KVAO pinout, 24LC02BT-E/OT16KVAO application, or 24LC02BT-E/OT16KVAO equivalent, key selection criteria include VCC range (2.5–5.5V), E-temp qualification (–40°C to +125°C), SOIC-8 package compatibility, write-protection via WP pin, and I²C timing compliance at 400 kHz under extended temperature conditions.

Technical Context

The 24LC02BT-E/OT16KVAO implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables sequential, random, and current-address read modes, while the 8-byte page write buffer reduces bus overhead during multi-byte writes.

Write protection is implemented via a dedicated WP pin tied to VCC to inhibit all write operations across the full 00h–FFh address space; no internal A0–A2 address pins are connected. The device uses self-timed erase/write cycles with 5 ms maximum page write time and supports acknowledge polling to detect write completion without fixed delays.

Key Specifications

Pinout & Package

24LC02BT-E/OT16KVAO is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, JEDEC MS-012AC standard footprint, and wettable flank capability for automated optical inspection (AOI). Pin 1 is marked by a beveled corner or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC02BT-E/OT16KVAO, the 24LC02B-I/OT sacrifices extended temperature support for lower cost in benign environments, while the AT24C02D-SSHM-T adds address flexibility and higher speed but removes hardware-level write security-making the 24LC02BT-E/OT16KVAO optimal for safety-critical, high-temp, write-locked applications.

Availability

24LC02BT-E/OT16KVAO is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and medical diagnostic equipment requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for 24LC02BT-E/OT16KVAO 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 Inc. is a leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.

The 24LC02B family was designed specifically for cost-sensitive, space-constrained embedded systems requiring reliable, low-power, I²C-compatible nonvolatile storage with hardware write protection and AEC-Q100 qualification for automotive use.

FAQ

What is the operating voltage range for the 24LC02BT-E/OT16KVAO?

The 24LC02BT-E/OT16KVAO operates from 2.5V to 5.5V. It is not rated for voltages below 2.5V-unlike the 24AA02 or 24FC02 variants-making it incompatible with 1.8V or 2.3V systems. This VCC range ensures compatibility with standard 3.3V and 5V logic families while maintaining low-power performance across its extended temperature range.

Does the 24LC02BT-E/OT16KVAO support multi-master I²C bus configurations?

Yes, the 24LC02BT-E/OT16KVAO fully supports multi-master I²C buses as a standard slave device. Its open-drain SDA/SCL pins, built-in arbitration logic, and compliance with I²C specification timing parameters-including THD:STA, TSU:STA, and TBUF-enable seamless coexistence with other masters. No additional external circuitry is required beyond standard bus pull-ups.

How does hardware write-protection work on the 24LC02BT-E/OT16KVAO?

Hardware write-protection on the 24LC02BT-E/OT16KVAO is controlled exclusively by the WP pin: when tied to VCC, all write operations (byte and page) to the full 00h–FFh memory array are inhibited, while reads remain fully functional. When WP is tied to VSS, normal read/write operation resumes. No internal registers or software commands affect this function-it is purely pin-level, providing fail-safe protection against firmware errors or voltage glitches.

Can the 24LC02BT-E/OT16KVAO be used in AEC-Q100 compliant automotive designs?

Yes, the 24LC02BT-E/OT16KVAO is explicitly AEC-Q100 qualified for Grade 1 (–40°C to +125°C), making it suitable for automotive body electronics, infotainment interfaces, and powertrain auxiliary modules. Its qualification includes stress testing for temperature cycling, humidity bias, and ESD-ensuring reliability in harsh vehicular environments where commercial-grade EEPROMs would fail prematurely.

What is the maximum page write size supported by the 24LC02BT-E/OT16KVAO?

The 24LC02BT-E/OT16KVAO supports an 8-byte page write buffer. Writes crossing physical page boundaries (every 8 bytes, starting at addresses 00h, 08h, 10h, etc.) will wrap within the current page instead of advancing to the next, potentially overwriting earlier data in that page. To avoid corruption, host firmware must enforce page-aligned write boundaries or limit bursts to ≤8 bytes per Stop condition.