Microchip Technology 24LC024T-E/MNY

Overview

24LC024T-E/MNY from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 2.5V to 5.5V with hardware write-protection (WP pin), 400 kHz max clock, and industrial/automotive temperature range (–40°C to +125°C). It supports up to eight devices on one bus and delivers 1 μA standby current and 1 mA read current for low-power embedded systems.

For engineers reviewing the 24LC024T-E/MNY datasheet, 24LC024T-E/MNY pinout, 24LC024T-E/MNY application, or 24LC024T-E/MNY equivalent, key selection criteria include voltage compatibility (2.5–5.5 V), WP-enabled hardware protection, 16-byte page write buffer, Schmitt-trigger noise immunity, and automotive-grade reliability for mission-critical storage in automotive control modules, industrial sensors, and medical device configuration memory.

Technical Context

The 24LC024T-E/MNY implements a 2-wire I²C interface with master-controlled SCL/SDA timing, internal address pointer auto-increment, and cascaded addressing via A0–A2 pins-enabling up to eight devices (24LC024 variants) on a single bus. Its EEPROM array uses charge-pump-based high-voltage generation for byte/page erase/write cycles.

Hardware write protection is active when WP is tied to VCC, disabling all writes to the full 256-byte memory space. The device features Schmitt-trigger inputs on SCL/SDA and input filter spike suppression (50 ns), ensuring robust operation in electrically noisy environments such as automotive body control units and factory automation controllers.

Key Specifications

Pinout & Package

24LC024T-E/MNY is housed in an 8-lead micro leadframe package (MNY = 2x3 mm DFN, exposed pad), pin-compatible with SOIC/TSSOP/MSOP footprints but with reduced footprint and improved thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24LC024T-E/MNY, the 24LC024T-I/MNY offers identical functionality at lower cost but excludes automotive qualification, while AT24C02D-SSHM-T trades hardware WP and endurance for speed and wider V_CC, making it suitable only where physical write-locking is not mandated.

Availability

24LC024T-E/MNY is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, and medical device configuration storage requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 24LC024T-E/MNY 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 components, and memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.

The 24LC024 series belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, and secure nonvolatile data storage in automotive, industrial, and medical applications demanding extended temperature operation and hardware-level write protection.

FAQ

What is the operating voltage range of the 24LC024T-E/MNY?

The 24LC024T-E/MNY operates from 2.5 V to 5.5 V. This range ensures compatibility with both 3.3 V and 5 V microcontroller I/O domains without level-shifting circuitry. Operation below 2.5 V is not supported-unlike the 24AA024 variant, which starts at 1.7 V. The 24LC024T-E/MNY's voltage specification is fixed per its datasheet DS21210N, and this range directly enables use in automotive 5 V power domains and industrial 3.3 V systems.

Does the 24LC024T-E/MNY include hardware write protection?

Yes, the 24LC024T-E/MNY includes a dedicated WP (Write-Protect) pin. When tied to VCC, it disables all write operations-including byte and page writes-to the entire 256-byte memory array. This hardware lock is independent of software commands and remains active during power transitions. The WP pin is present on all 24LC024 variants (including 24LC024T-E/MNY) but absent on 24LC025 devices, as confirmed in the Pin Descriptions section of DS21210N.

What package type does 24LC024T-E/MNY use, and is it pin-compatible with other 8-lead variants?

The 24LC024T-E/MNY uses an 8-lead 2×3 mm DFN package with exposed pad (MNY suffix). It shares identical pin numbering and function mapping with 8-lead SOIC, TSSOP, and MSOP packages per the Pin Function Table in DS21210N. This allows direct PCB footprint reuse across package types-critical for design flexibility and cost-optimized prototyping-while offering superior thermal performance and smaller area than SOIC.

How many devices can be connected on a single I²C bus using the 24LC024T-E/MNY?

Up to eight 24LC024T-E/MNY devices can be connected on a single I²C bus using the A0, A1, and A2 address pins. These three pins form the three least-significant bits of the 7-bit slave address (base 1010xxx), enabling unique addressing from 1010000 to 1010111. This cascading capability supports up to 16 Kbits of contiguous EEPROM space-confirmed in the Device Selection Table and Functional Description sections of DS21210N.

What is the maximum write cycle time for the 24LC024T-E/MNY, and how is completion detected?

The maximum write cycle time for the 24LC024T-E/MNY is 5 ms for both byte and page writes. Completion is detected via acknowledge polling: after issuing a Stop condition, the host sends repeated Start + control byte (R/W = 0) sequences until the device responds with an ACK. This method avoids fixed delays and maximizes bus efficiency-explicitly documented in Section 7.0 (Acknowledge Polling) of DS21210N and validated across all 24LC024 variants including 24LC024T-E/MNY.