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

Microchip Technology AT24C02A-10TI-2.7-T

Name: AT24C02A-10TI-2.7-T
Brand: Microchip Technology
SKU: AT24C02A-10TI-2.7-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C02A-10TI-2.7-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: AT24C02A-10TI-2.7-T.pdf

Description:: IC EEPROM 2KBIT I2C 8TSSOP

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Product details

Overview

AT24C02A-10TI-2.7-T from Microchip Technology (formerly Atmel) is a 2 Kbit I²C-compatible serial EEPROM with hardware write protection, organized as 256 × 8 bits, operating from 2.7V to 5.5V, and rated for −40°C to +85°C industrial temperature range. It supports 400 kHz clock rate at 2.7V/5V, features Schmitt-trigger inputs for noise immunity, and delivers 1 million write cycles with 100-year data retention-used in automotive body control modules, industrial sensor calibration storage, and embedded system configuration memory.

For engineers reviewing the AT24C02A-10TI-2.7-T datasheet, AT24C02A-10TI-2.7-T pinout, AT24C02A-10TI-2.7-T application, or AT24C02A-10TI-2.7-T equivalent, key selection considerations include its TSSOP-8 package, WP pin-based hardware write protection, 8-byte page write capability, 2.7V–5.5V supply compatibility, and automotive-grade reliability under extended temperature stress.

Technical Context

The AT24C02A-10TI-2.7-T implements a two-wire I²C interface with open-drain SDA and active-high SCL, supporting standard-mode (100 kHz) and fast-mode (400 kHz) operation depending on VCC level. Its internal address counter enables current-address and sequential reads, while device addressing uses A0–A2 pins for up to eight devices on one bus.

Write protection is enforced via the WP pin: tied to VCC, it locks the upper half (1K) of memory; tied to GND, full read/write access is enabled. The device enters self-timed 5 ms write cycles after each stop condition, during which all inputs are disabled and acknowledge polling must be used to detect completion.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	2048 bits (256 × 8), enabling compact nonvolatile storage for firmware flags, calibration coefficients, or user settings
Supply Voltage Range	2.7V to 5.5V - compatible with 3.3V and 5V logic systems without level shifting
I²C Clock Rate	400 kHz at 2.7V/5V - supports faster configuration writes versus legacy 100 kHz EEPROMs
Page Write Size	8 bytes per page - reduces I²C transaction overhead when updating multi-byte parameters
Endurance	1,000,000 write cycles - suitable for frequent recalibration or logging in industrial controllers
Data Retention	100 years at 25°C - ensures long-term validity of stored calibration or security keys
Operating Temperature	−40°C to +85°C - qualified for under-hood automotive and factory-floor industrial use

Pinout & Package

AT24C02A-10TI-2.7-T is housed in an 8-lead TSSOP (Thin Shrink Small Outline Package) with 4.4 mm body width, 0.65 mm lead pitch, and surface-mount footprint optimized for high-density PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
A0	Device Address Input	Hardwired address bit enabling up to eight AT24C02A devices on a single I²C bus
A1	Device Address Input	Second hardwired address bit; combined with A0/A2, forms unique 3-bit slave address
A2	Device Address Input	Third hardwired address bit; determines device position in multi-drop I²C topology
GND	Ground Reference	Return path for VCC and signal currents; must be low-impedance for noise immunity
VCC	Power Supply	Primary 2.7–5.5V supply input; decoupling capacitor required within 10 mm
WP	Write Protect Control	Hardware-enforced lock: VCC = upper-half memory protection; GND = full read/write access
SCL	Serial Clock Input	Positive-edge sampled clock for I²C synchronization; requires external pull-up resistor
SDA	Serial Data I/O	Bidirectional open-drain line shared across I²C bus; requires external pull-up resistor

Key Features

Feature	Design Value
Hardware Write Protection	WP pin disables writes to upper 1K of memory when pulled high, preventing accidental overwrites during power-up or firmware updates
Schmitt Trigger Inputs	SDA and SCL inputs include hysteresis and filtering, rejecting >100 ns noise spikes common in noisy automotive or industrial environments
Partial Page Writes	Allows writing fewer than 8 bytes within a page without corrupting adjacent data, simplifying small-parameter updates
Low Standby Current	1.6 µA typical at 2.7V - extends battery life in always-on sensor nodes or backup power systems
Automotive Qualification	Qualified per AEC-Q100 Grade 3 (−40°C to +85°C), including HTOL, ESD, and latch-up testing for under-dash applications

Applications

Automotive Body Control Unit	Industrial Sensor Calibration
Use Scenario: Storing door lock actuator timing profiles, mirror position presets, and seat memory settings in a vehicle body control module. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during MCU boot and runtime parameter adjustment. Use Value: Enables field-upgradable settings without requiring reprogramming of main microcontroller flash; WP pin prevents corruption during CAN bus transients.	Use Scenario: Retaining factory-trimmed offset/gain coefficients for pressure and temperature sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter storage updated once during manufacturing and read at every power-on reset. Use Value: Eliminates need for external trimming components; 100-year retention ensures calibration validity over equipment lifetime.
Smart Meter Firmware Flags	Medical Device Configuration
Use Scenario: Holding tariff schedule activation flags, tamper-detection status, and communication protocol version in utility smart meters. IC Role / Device Role / Timing Role: Secure, low-power configuration register bank accessed infrequently but requiring guaranteed persistence. Use Value: WP pin blocks unauthorized flag modification; 1M endurance supports decades of firmware update cycles.	Use Scenario: Storing patient-specific therapy parameters (e.g., infusion pump flow rates, alarm thresholds) that persist across power cycles. IC Role / Device Role / Timing Role: Certified nonvolatile memory for safety-critical configuration data, accessed only during setup or diagnostics. Use Value: AEC-Q100 qualification provides design assurance for Class II medical devices; 2.7V operation ensures compatibility with low-voltage battery-backed systems.

Automotive Body Control Unit

Industrial Sensor Calibration

Use Scenario: Storing door lock actuator timing profiles, mirror position presets, and seat memory settings in a vehicle body control module.

IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during MCU boot and runtime parameter adjustment.

Use Value: Enables field-upgradable settings without requiring reprogramming of main microcontroller flash; WP pin prevents corruption during CAN bus transients.

Use Scenario: Retaining factory-trimmed offset/gain coefficients for pressure and temperature sensors in programmable logic controllers.

IC Role / Device Role / Timing Role: Persistent parameter storage updated once during manufacturing and read at every power-on reset.

Use Value: Eliminates need for external trimming components; 100-year retention ensures calibration validity over equipment lifetime.

Smart Meter Firmware Flags

Medical Device Configuration

Use Scenario: Holding tariff schedule activation flags, tamper-detection status, and communication protocol version in utility smart meters.

IC Role / Device Role / Timing Role: Secure, low-power configuration register bank accessed infrequently but requiring guaranteed persistence.

Use Value: WP pin blocks unauthorized flag modification; 1M endurance supports decades of firmware update cycles.

Use Scenario: Storing patient-specific therapy parameters (e.g., infusion pump flow rates, alarm thresholds) that persist across power cycles.

IC Role / Device Role / Timing Role: Certified nonvolatile memory for safety-critical configuration data, accessed only during setup or diagnostics.

Use Value: AEC-Q100 qualification provides design assurance for Class II medical devices; 2.7V operation ensures compatibility with low-voltage battery-backed systems.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STMicroelectronics M24C02-RMN6TP	Same 2K size, I²C interface, and TSSOP-8 package; operates 1.7–5.5V; lacks dedicated WP pin (uses software write protection)	No hardware-level write lock - unsuitable where physical fault isolation is required (e.g., automotive)	Select if lower voltage operation (1.7V) is critical and WP functionality is managed externally or in firmware.
ON Semiconductor CAT24C02HU4I-GT3	2K I²C EEPROM in 8-pin TSSOP; supports 1.7–5.5V; includes WP pin but specifies only 100 kHz max clock at 1.8V (no 400 kHz rating)	Lower maximum I²C speed limits throughput in high-frequency configuration updates	Choose when cost sensitivity outweighs speed requirements and full 400 kHz operation is not needed.

Compared with M24C02-RMN6TP and CAT24C02HU4I-GT3, the AT24C02A-10TI-2.7-T uniquely combines hardware WP enforcement, 400 kHz I²C performance at 2.7V, and AEC-Q100 qualification - making it the preferred choice for safety- or reliability-critical industrial and automotive designs where deterministic write protection and timing predictability are mandatory.

Availability

AT24C02A-10TI-2.7-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor calibration, and medical device configuration storage requiring stable component supply across multi-year production lifecycles.

Supply support for AT24C02A-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 devices, and nonvolatile memory solutions, with broad industrial and automotive qualification coverage.

The AT24C02A-10TI-2.7-T belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based configuration and calibration storage in harsh-temperature embedded systems.

FAQ

What is the maximum I²C clock frequency supported by the AT24C02A-10TI-2.7-T?

The AT24C02A-10TI-2.7-T supports up to 400 kHz I²C clock frequency when operated at 2.7V or 5V supply. At 1.8V (not applicable to this -2.7 variant), the maximum is 100 kHz. This 400 kHz capability enables faster parameter writes compared to legacy 100 kHz EEPROMs, reducing boot-time configuration latency in real-time systems. The AT24C02A-10TI-2.7-T meets timing specifications down to tLOW = 1.2 µs and tHIGH = 0.6 µs at 400 kHz.

How does the WP pin function on the AT24C02A-10TI-2.7-T?

On the AT24C02A-10TI-2.7-T, the WP (Write Protect) pin provides hardware-level memory locking: when tied to VCC, it protects the upper half (1024 bits) of the 2K array from writes; when tied to GND, full read/write access is enabled. This behavior is independent of software commands and remains active during power transitions. The AT24C02A-10TI-2.7-T uses this feature to prevent accidental overwrites during MCU initialization or EMI events - a key requirement in automotive and industrial deployments.

What package type is used for the AT24C02A-10TI-2.7-T?

The AT24C02A-10TI-2.7-T is supplied in an 8-lead TSSOP (Thin Shrink Small Outline Package) with 4.4 mm body width, 0.65 mm lead pitch, and gull-wing leads. This RoHS-compliant, lead-free package is optimized for automated SMT assembly and high-density PCB layouts. Its thermal and mechanical characteristics meet JEDEC MO-153 standards, and the AT24C02A-10TI-2.7-T's pinout matches industry-standard TSSOP-8 footprints used across multiple EEPROM vendors.

Is the AT24C02A-10TI-2.7-T qualified for automotive applications?

Yes, the AT24C02A-10TI-2.7-T is explicitly qualified for automotive use under AEC-Q100 Grade 3 (−40°C to +85°C), including stress testing for high-temperature operating life (HTOL), electrostatic discharge (HBM ±2 kV), and latch-up immunity. Its construction, wafer processing, and final test flow comply with automotive reliability requirements. The AT24C02A-10TI-2.7-T is commonly deployed in body control modules, lighting controllers, and dashboard instrumentation where extended temperature stability and fault resilience are mandatory.

What is the write endurance and data retention specification for the AT24C02A-10TI-2.7-T?

The AT24C02A-10TI-2.7-T guarantees 1,000,000 write cycles per memory location and 100 years of data retention at 25°C ambient temperature. These values are characterized and specified across the full −40°C to +85°C operating range. The AT24C02A-10TI-2.7-T achieves this through oxide quality control and charge-trapping optimization in its floating-gate EEPROM cell structure - enabling long-term reliability in applications such as sensor calibration storage and firmware flag management.

AT24C02A-10TI-2.7-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not 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:: 2.7V ~ 5.5V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

AT24C02A-10TI-2.7-T FAQ

1.How can I place an order for AT24C02A-10TI-2.7-T through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C02A-10TI-2.7-T 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 AT24C02A-10TI-2.7-T reliable?

The price and inventory of AT24C02A-10TI-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02A-10TI-2.7-T is usually 5 days.

3.What payment methods are accepted for AT24C02A-10TI-2.7-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02A-10TI-2.7-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C02A-10TI-2.7-T?

AT24C02A-10TI-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C02A-10TI-2.7-T 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 AT24C02A-10TI-2.7-T?

For technical support, including AT24C02A-10TI-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02A-10TI-2.7-T requirements.

6.How does Aetrix verify that AT24C02A-10TI-2.7-T is sourced from the original manufacturer or authorized distributors?

All AT24C02A-10TI-2.7-T 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 AT24C02A-10TI-2.7-T meets industry standards.

7.What is the process for return or replacement of AT24C02A-10TI-2.7-T?

All AT24C02A-10TI-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02A-10TI-2.7-T, 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 AT24C02A-10TI-2.7-T part is unused and in its original packaging.

Return procedure for AT24C02A-10TI-2.7-T:

1.Submit a request within 90 days.

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

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