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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology 24AA024-I/MS

Name: 24AA024-I/MS
Brand: Microchip Technology
SKU: 24AA024-I/MS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 24AA024-I/MS

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: 24AA024-I/MS.pdf

Description:: IC EEPROM 2KBIT I2C 400KHZ 8MSOP

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Product details

Overview

24AA024-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 systems for storing calibration data, device configuration, and secure identifiers.

For engineers reviewing the 24AA024-I/MS datasheet, 24AA024-I/MS pinout, 24AA024-I/MS application, or 24AA024-I/MS equivalent, key selection criteria include its MSOP-8 package, WP-enabled hardware protection, I²C address flexibility (A0–A2), and guaranteed 200-year data retention under industrial conditions.

Technical Context

The 24AA024-I/MS implements a true 2-wire I²C interface with Schmitt-trigger inputs and slew-rate-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer auto-increments during sequential reads and wraps at 0xFF, enabling full-array access in one transaction.

Write operations are self-timed and internally managed: byte and page writes complete within 5 ms maximum, with acknowledge polling supported to optimize bus utilization. Hardware write-protection is active when WP = V_CC, disabling all array writes regardless of command sequence.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	2 Kbit (256 × 8-bit) - sufficient for firmware revision stamps, MAC address storage, or sensor calibration coefficients in compact nodes.
Supply Voltage	1.7V to 5.5V - enables direct interfacing with 1.8V, 3.3V, and 5V microcontrollers without level-shifting.
I²C Clock Rate	Up to 400 kHz (100 kHz below 2.5V) - supports high-throughput configuration loading while maintaining compatibility with legacy 100 kHz controllers.
Page Write Buffer	16 bytes - reduces write transaction count by 16× versus byte-write mode, lowering total programming time and bus occupancy.
Endurance & Retention	1,000,000 erase/write cycles; >200 years data retention - validated for lifetime logging in unattended industrial sensors and metering endpoints.
Write Protection	Hardware-enabled via dedicated WP pin - prevents accidental overwrites during power-up/down or firmware updates without software intervention.
ESD Rating	>4 kV HBM - ensures robustness against handling and board-level ESD events in manufacturing and field service environments.

Pinout & Package

24AA024-I/MS is housed in an 8-pin MSOP (Mini Small Outline Package) with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed pad option per Microchip's MSOP-8 drawing (package code MS). Pin 1 is laser-marked; pin numbering follows standard MSOP orientation (counterclockwise from notch).

Pin/Terminal	Circuit Role	Design Meaning
A0	Chip Select Input	LSB of 3-bit slave address; ties to V_SS or V_CC to configure device address (0x50–0x57) for multi-device I²C bus expansion.
A1	Chip Select Input	Middle bit of slave address; enables up to eight 24AA024-I/MS devices on same bus without address conflict.
A2	Chip Select Input	MSB of slave address; required for full 3-bit addressing - present and functional in MSOP-8 (unlike SOT-23 variants).
V_SS	Ground Reference	Primary return path for I²C signals and internal logic; must be low-impedance to ensure noise immunity during write cycles.
SDA	Serial Data I/O	Open-drain bidirectional line; requires external pull-up (2 kΩ for 400 kHz); transmits addresses, commands, and data with ACK/NACK signaling.
SCL	Serial Clock Input	Master-generated clock; synchronizes all data transfers; Schmitt-trigger input rejects <50 ns noise spikes per spec.
WP	Write-Protect Control	Active-high hardware lock; when tied to V_CC, blocks all write operations including page/byte writes and erase - no software override possible.
V_CC	Power Supply	Single 1.7–5.5V supply powers EEPROM core, I/O buffers, and HV generator; internal voltage detector disables writes below ~1.5V.

Key Features

Feature	Design Value
Hardware Write-Protection	Physically disables all memory writes when WP = V_CC, eliminating risk of corruption during brown-out or firmware update sequences.
Schmitt Trigger Inputs	Input hysteresis ≥0.05×V_CC rejects bus noise up to 50 ns, ensuring reliable Start/Stop detection in electrically noisy industrial enclosures.
Page Write Capability	16-byte buffer allows burst programming of configuration blocks in one I²C transaction, reducing host CPU overhead and bus arbitration latency.
Low-Power Operation	Typical standby current of 1 μA and active read current of 1 mA enable battery-powered applications with multi-year shelf life.
I²C Address Flexibility	Three address pins (A0–A2) support eight unique slave addresses (0x50–0x57), simplifying multi-sensor node design without address jumpers.

Applications

Industrial Sensor Node	Medical Device Calibration
Use Scenario: Storing factory-calibrated offset/gain coefficients and sensor linearization tables in a wireless temperature/humidity node. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at power-on via I²C; retains values across 10+ year deployments. Use Value: Eliminates need for external calibration hardware; enables field-replaceable sensor modules with pre-programmed correction data.	Use Scenario: Holding FDA-mandated device serial numbers, manufacturing dates, and firmware version stamps in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant identity register; write-protected after initial programming to prevent unauthorized modification. Use Value: Meets regulatory traceability requirements; WP pin ensures immutable records even during unexpected power loss or firmware faults.
Smart Meter Firmware ID	Automotive Body Control Module
Use Scenario: Recording firmware revision, cryptographic keys, and tariff schedule versions in utility smart meters operating at –25°C to +70°C. IC Role / Device Role / Timing Role: Trusted boot-time configuration source; accessed once per power cycle to validate firmware integrity. Use Value: Enables secure over-the-air updates with rollback protection; 200-year retention guarantees data validity over meter lifetime.	Use Scenario: Storing seat position presets, mirror angles, and user preferences in automotive door modules. IC Role / Device Role / Timing Role: Persistent settings storage with fast random-read access; survives vehicle battery disconnects and cold cranking. Use Value: Delivers consistent user experience across ignition cycles; WP pin prevents accidental overwrite during CAN bus firmware updates.

Industrial Sensor Node

Medical Device Calibration

Use Scenario: Storing factory-calibrated offset/gain coefficients and sensor linearization tables in a wireless temperature/humidity node.

IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at power-on via I²C; retains values across 10+ year deployments.

Use Value: Eliminates need for external calibration hardware; enables field-replaceable sensor modules with pre-programmed correction data.

Use Scenario: Holding FDA-mandated device serial numbers, manufacturing dates, and firmware version stamps in portable diagnostic equipment.

IC Role / Device Role / Timing Role: Secure, tamper-resistant identity register; write-protected after initial programming to prevent unauthorized modification.

Use Value: Meets regulatory traceability requirements; WP pin ensures immutable records even during unexpected power loss or firmware faults.

Smart Meter Firmware ID

Automotive Body Control Module

Use Scenario: Recording firmware revision, cryptographic keys, and tariff schedule versions in utility smart meters operating at –25°C to +70°C.

IC Role / Device Role / Timing Role: Trusted boot-time configuration source; accessed once per power cycle to validate firmware integrity.

Use Value: Enables secure over-the-air updates with rollback protection; 200-year retention guarantees data validity over meter lifetime.

Use Scenario: Storing seat position presets, mirror angles, and user preferences in automotive door modules.

IC Role / Device Role / Timing Role: Persistent settings storage with fast random-read access; survives vehicle battery disconnects and cold cranking.

Use Value: Delivers consistent user experience across ignition cycles; WP pin prevents accidental overwrite during CAN bus firmware updates.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
24LC024-I/MS	Requires minimum 2.5V V_CC; no WP pin in SOT-23 variant (but present in MSOP); automotive temp grade available.	Used where higher V_CC margin or AEC-Q100 compliance is required; lacks hardware write-protection in some packages.	Select if automotive qualification or 2.5V+ system architecture is mandatory; verify WP functionality matches design needs.
AT24C02C-MAHM-T	Same 2 Kbit size, I²C interface, and MSOP-8 package; 1.7–5.5V operation; write-protect enabled via software command (not hardware pin).	Preferred where dynamic write-lock control is needed (e.g., field-upgradable security keys); no dedicated WP pin routing required.	Choose when software-governed protection suffices and pin count is constrained; note that software WP requires valid I²C communication to activate.

Compared with 24AA024-I/MS, 24LC024-I/MS trades guaranteed 1.7V operation and hardware WP for automotive qualification, while AT24C02C-MAHM-T replaces physical WP with command-based locking - impacting fail-safe behavior during power faults.

Availability

24AA024-I/MS is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and smart meter firmware identification requiring stable component supply and long-term lifecycle assurance.

Supply support for 24AA024-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 nonvolatile memory solutions, headquartered in Chandler, Arizona.

The 24AA024-I/MS belongs to Microchip's 24XX024 family of I²C EEPROMs, designed specifically for reliable, low-power, and pin-efficient configuration storage in space-constrained embedded systems.

FAQ

What is the maximum I²C clock frequency supported by the 24AA024-I/MS?

The 24AA024-I/MS supports up to 400 kHz I²C clock frequency when V_CC ≥ 1.8V. At V_CC < 2.5V, the maximum clock rate drops to 100 kHz per Microchip DS21210N specification. This dual-speed capability ensures interoperability with both legacy and high-speed controllers while maintaining signal integrity across voltage ranges.

Does the 24AA024-I/MS have hardware write protection, and how is it implemented?

Yes, the 24AA024-I/MS includes a dedicated hardware write-protection (WP) pin. When WP is tied to V_CC, all write operations - including byte, page, and erase commands - are blocked at the silicon level. The 24AA024-I/MS acknowledges the command but writes no data, providing fail-safe protection during power transitions or firmware errors.

What package type is used for the 24AA024-I/MS, and what are its key mechanical dimensions?

The 24AA024-I/MS uses an 8-pin MSOP (Mini Small Outline Package) with 0.65 mm lead pitch, 3.0 mm × 3.0 mm body size, and standard pin 1 marking. Per Microchip's packaging documentation, this variant supports thermal performance suitable for reflow soldering and fits high-density PCB layouts where SOIC or TSSOP would be too large.

How many devices can be connected on the same I²C bus using the 24AA024-I/MS?

Up to eight 24AA024-I/MS devices can be cascaded on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit slave addresses (0x50–0x57). Each device responds only when its address bits match the transmitted control byte, enabling scalable multi-node configuration storage without bus contention.

What is the endurance and data retention specification for the 24AA024-I/MS?

The 24AA024-I/MS is rated for more than 1 million erase/write cycles and guarantees data retention exceeding 200 years at +85°C ambient temperature. These specifications are validated per JEDEC standards and apply across the full industrial temperature range (–40°C to +85°C), making it suitable for mission-critical long-life applications.

24AA024-I/MS Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tube

Product Status:: Active

Programmable:: Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 2Kbit

Memory Organization:: 256 x 8

Memory Interface:: I2C

Clock Frequency:: 400 kHz

Write Cycle Time - Word, Page:: 5ms

Access Time:: 900 ns

Voltage - Supply:: 1.7V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MSOP

24AA024-I/MS FAQ

1.How can I place an order for 24AA024-I/MS through Aetrix?

Please submit a Request for Quotation (RFQ) for 24AA024-I/MS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 24AA024-I/MS reliable?

The price and inventory of 24AA024-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24AA024-I/MS is usually 5 days.

3.What payment methods are accepted for 24AA024-I/MS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24AA024-I/MS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 24AA024-I/MS?

24AA024-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 24AA024-I/MS order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 24AA024-I/MS?

For technical support, including 24AA024-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24AA024-I/MS requirements.

6.How does Aetrix verify that 24AA024-I/MS is sourced from the original manufacturer or authorized distributors?

All 24AA024-I/MS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 24AA024-I/MS meets industry standards.

7.What is the process for return or replacement of 24AA024-I/MS?

All 24AA024-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24AA024-I/MS, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 24AA024-I/MS part is unused and in its original packaging.

Return procedure for 24AA024-I/MS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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