Microchip Technology 24AA024T-I/MS

Overview

24AA024T-I/MS from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, featuring hardware write-protection (WP pin), 1.7V–5.5V single-supply operation, and industrial temperature range (–40°C to +85°C). It supports up to 400 kHz clock rate, 16-byte page writes, and >1 million erase/write cycles - deployed in embedded system configuration storage, sensor calibration data retention, and secure device identity storage.

For engineers reviewing the 24AA024T-I/MS datasheet, 24AA024T-I/MS pinout, 24AA024T-I/MS application, or 24AA024T-I/MS equivalent, key selection considerations include VCC voltage compatibility (1.7V min), WP-enabled hardware protection for critical memory regions, MSOP-8 package footprint constraints, and I²C bus timing compliance at both 100 kHz and 400 kHz.

Technical Context

The 24AA024T-I/MS implements a two-wire I²C interface with Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce. Its internal address pointer auto-increments during sequential reads and wraps from 0xFF to 0x00, enabling full-array streaming without external address management.

It uses an on-chip high-voltage generator for EEPROM programming and includes a threshold detector that disables erase/write logic below 1.5V VCC. The WP pin (pin 7) enables hardware-level write protection of the entire 2 Kbit array when tied to VCC - a feature absent in 24AA025 variants and not present in SOT-23 packages.

Key Specifications

Pinout & Package

24AA024T-I/MS is housed in an 8-pin MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), optimized for space-constrained PCB layouts while maintaining thermal and soldering reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 24AA024T-I/MS, 24LC024T-I/MS trades wider voltage flexibility for higher minimum supply, while AT24C02D-MAHM-T replaces hardware WP with software lock bits - making 24AA024T-I/MS the only option offering guaranteed 1.7V operation *and* hardware write protection in MSOP-8.

Availability

24AA024T-I/MS is available at Aetrix Electronics and suitable for industrial control HMI configuration storage, medical device calibration data retention, and automotive body-control module identity storage requiring stable component supply and long-term lifecycle support.

Supply support for 24AA024T-I/MS 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 design and manufacturing infrastructure.

The 24AA024T-I/MS belongs to Microchip's 24XX024 family of I²C EEPROMs, designed specifically for robust, low-voltage, hardware-protected nonvolatile storage in space- and power-constrained embedded systems.

FAQ

What is the minimum operating voltage for the 24AA024T-I/MS?

The 24AA024T-I/MS operates down to 1.7V, enabling direct integration with 1.8V logic families and ultra-low-power microcontrollers. Below 1.7V, the internal voltage detector disables write operations to prevent data corruption - a safeguard confirmed in Section 2.5 of the DS21210N datasheet.

Does the 24AA024T-I/MS support 400 kHz I²C communication?

Yes, the 24AA024T-I/MS fully supports 400 kHz I²C clock rates at VCC ≥1.8V, as specified in Table 1-2 of DS21210N. At 1.7V ≤ VCC < 1.8V, maximum clock frequency is limited to 100 kHz to ensure timing margin compliance.

How does the WP pin function on the 24AA024T-I/MS?

The WP pin on the 24AA024T-I/MS is an active-high hardware write-protect input. When tied to VCC, it disables all internal write cycles - including byte and page writes - while read operations remain fully functional. This behavior is exclusive to 24XX024 variants and is documented in Section 2.4.

What package type is used for the 24AA024T-I/MS?

The 24AA024T-I/MS uses an 8-pin MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), as indicated by the "MS" suffix in the part number and confirmed in the Package Types table on DS21210N-page 1. This package offers compact footprint and thermal performance suitable for dense PCB layouts.

Can multiple 24AA024T-I/MS devices share the same I²C bus?

Yes, up to eight 24AA024T-I/MS devices can be cascaded on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit chip select codes. Each device responds only to its assigned 7-bit slave address (1010xxxR/W), as defined in Section 5.0 of DS21210N.