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

Microchip Technology AT24C02N-10SU-2.7

Name: AT24C02N-10SU-2.7
Brand: Microchip Technology
SKU: AT24C02N-10SU-2.7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C02N-10SU-2.7

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AT24C02N-10SU-2.7.pdf

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

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Product details

Overview

AT24C02N-10SU-2.7 from Microchip Technology is a 2-Kbit (256 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 400 kHz I²C interface speed at 2.7V+, Schmitt-trigger inputs for noise immunity, and hardware write protection via the WP pin. It is used in embedded systems for storing calibration data, configuration settings, and device identifiers where low-voltage reliability and space-constrained PCB layouts are critical.

For engineers reviewing the AT24C02N-10SU-2.7 datasheet, AT24C02N-10SU-2.7 pinout, AT24C02N-10SU-2.7 application, or AT24C02N-10SU-2.7 equivalent, this page delivers verified electrical specs, JEDEC SOIC-8 package mapping, real-world use cases, and validated alternative parts - all confirmed against Microchip's official AT24C01A/02/04/08A/16A datasheet (0180Z1–SEEPR–5/07).

Technical Context

The AT24C02N-10SU-2.7 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting both byte and 8-byte page writes. Its internal address counter enables sequential reads across memory boundaries without re-addressing.

It uses hard-wired A0–A2 pins for device addressing (up to eight devices on one bus), integrates Schmitt-trigger filtering on all inputs, and features self-timed 5 ms max write cycles with automatic acknowledge polling support - eliminating need for fixed delay timing in host firmware.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	2 Kbit (256 words × 8 bits); supports 8-byte page writes and full-array random access.
Supply Voltage Range	2.7 V to 5.5 V; enables direct integration into 3.3 V and 5 V logic domains without level-shifting.
I²C Clock Frequency	Up to 400 kHz at VCC ≥ 2.7 V; ensures compatibility with standard fast-mode I²C controllers.
Write Endurance	1 million write cycles per byte; guarantees long-term field reliability in frequently updated storage roles.
Data Retention	100 years at +25°C; suitable for lifetime-critical nonvolatile storage in industrial and automotive applications.
Operating Temperature	–40°C to +85°C; qualified for industrial-grade embedded environments without derating.
Standby Current	1.6 µA typical at 2.7 V; minimizes power draw in battery-backed or energy-sensitive systems.

Pinout & Package

AT24C02N-10SU-2.7 is packaged in an 8-lead JEDEC SOIC (8S1), 0.150" wide, RoHS-compliant green package with NiPdAu lead finish. Pin 1 is marked by a notch or dot; leads are gull-wing shaped for standard reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
A0	Device Address Input	Hard-wired LSB of 3-bit device address; enables up to eight AT24C02N-10SU-2.7 devices on one I²C bus.
A1	Device Address Input	Mid-bit of device address; tied high/low to configure unique I²C slave address (0x50–0x57 range).
A2	Device Address Input	MSB of device address; determines position within 8-device addressing space.
GND	Ground Reference	Return path for VCC and signal logic; must be low-impedance to ensure noise-immune I²C signaling.
VCC	Power Supply	Primary DC supply input (2.7–5.5 V); decoupling capacitor (0.1 µF) required near pin for stable operation.
WP	Write Protect Control	Hardware lock: tied to GND for read/write; tied to VCC to disable all writes (full-array protection).
SCL	Serial Clock Input	Positive-edge clock for I²C transactions; requires external pull-up resistor (typically 4.7 kΩ).
SDA	Serial Data I/O	Bidirectional open-drain data line; shared across multiple I²C devices; requires same pull-up as SCL.

Key Features

Feature	Design Value
Two-wire Serial Interface	Fully compliant with I²C-bus specification; reduces PCB routing complexity vs. SPI or parallel EEPROMs.
Schmitt Trigger Inputs	Input hysteresis on SCL/SDA/A0–A2/WP suppresses noise-induced glitches in electrically noisy environments.
8-byte Page Write Mode	Enables burst programming of up to 8 bytes per transaction, cutting firmware overhead and total write time.
Self-timed Write Cycle	Internal 5 ms max erase/write completes autonomously; host can poll ACK instead of using fixed delays.
Hardware Write Protection	WP pin provides fail-safe, pin-level lockout - immune to software corruption or reset-induced writes.
Industrial Temp Range	–40°C to +85°C operation validated per JEDEC JESD22-A108; eliminates thermal qualification risk.

Applications

Smart Meter Configuration Storage	Industrial PLC Parameter Backup
Use Scenario: Storing tariff tables, meter ID, and calibration coefficients in electricity/water/gas meters exposed to wide temperature swings and EMI. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed infrequently during commissioning or firmware updates via I²C. Use Value: 100-year data retention and –40°C to +85°C operation ensure accuracy over 15+ year field life without battery backup.	Use Scenario: Preserving ladder logic parameters, I/O mapping, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Persistent parameter store updated only during maintenance windows; accessed synchronously over isolated I²C bus. Use Value: Hardware WP pin prevents accidental overwrites during runtime, while 1M endurance supports decades of service cycles.
Medical Device Calibration Memory	Automotive Body Control Module Settings
Use Scenario: Holding sensor offset/gain values and user preferences in portable diagnostic tools requiring regulatory traceability and audit logs. IC Role / Device Role / Timing Role: Secure, tamper-evident storage element with deterministic write latency for FDA/IEC 62304 compliance. Use Value: Schmitt-trigger inputs reject ESD transients common in clinical environments; RoHS-compliant green package meets medical material restrictions.	Use Scenario: Saving seat/mirror/window position presets, lighting profiles, and door lock behavior in BCMs across vehicle production lifecycles. IC Role / Device Role / Timing Role: Low-power, always-on memory accessed during ignition-on initialization and sleep-mode wake events. Use Value: 1.6 µA standby current extends battery drain budget; 2.7–5.5 V range interfaces directly with 3.3 V MCU I/O without voltage translation.

Smart Meter Configuration Storage

Industrial PLC Parameter Backup

Use Scenario: Storing tariff tables, meter ID, and calibration coefficients in electricity/water/gas meters exposed to wide temperature swings and EMI.

IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed infrequently during commissioning or firmware updates via I²C.

Use Value: 100-year data retention and –40°C to +85°C operation ensure accuracy over 15+ year field life without battery backup.

Use Scenario: Preserving ladder logic parameters, I/O mapping, and alarm thresholds in programmable logic controllers deployed in factory automation.

IC Role / Device Role / Timing Role: Persistent parameter store updated only during maintenance windows; accessed synchronously over isolated I²C bus.

Use Value: Hardware WP pin prevents accidental overwrites during runtime, while 1M endurance supports decades of service cycles.

Medical Device Calibration Memory

Automotive Body Control Module Settings

Use Scenario: Holding sensor offset/gain values and user preferences in portable diagnostic tools requiring regulatory traceability and audit logs.

IC Role / Device Role / Timing Role: Secure, tamper-evident storage element with deterministic write latency for FDA/IEC 62304 compliance.

Use Value: Schmitt-trigger inputs reject ESD transients common in clinical environments; RoHS-compliant green package meets medical material restrictions.

Use Scenario: Saving seat/mirror/window position presets, lighting profiles, and door lock behavior in BCMs across vehicle production lifecycles.

IC Role / Device Role / Timing Role: Low-power, always-on memory accessed during ignition-on initialization and sleep-mode wake events.

Use Value: 1.6 µA standby current extends battery drain budget; 2.7–5.5 V range interfaces directly with 3.3 V MCU I/O without voltage translation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT24C02D-SSHM-T	Same 2Kbit capacity, SOIC-8 package, but rated for 1.7–5.5 V and offers 1 MHz I²C speed at 5 V.	Supports higher-speed communication in 5 V systems; not qualified for 2.7 V minimum operation.	Select when system VCC ≥ 4.5 V and faster write throughput is needed; verify WP functionality matches legacy design.
M24C02-RMN6TP	2 Kbit EEPROM in SOIC-8, 1.8–5.5 V range, 400 kHz I²C, but lacks dedicated WP pin (write protect via software command only).	Requires firmware-level protection logic; no hardware lockout for critical safety parameters.	Choose for cost-sensitive designs where hardware write lock is nonessential and software control suffices.

Compared with AT24C02N-10SU-2.7, AT24C02D-SSHM-T enables faster I²C transfers above 4.5 V but sacrifices guaranteed 2.7 V operation, while M24C02-RMN6TP removes hardware write protection - making AT24C02N-10SU-2.7 uniquely suited for robust, low-voltage industrial systems requiring physical write lockout.

Availability

AT24C02N-10SU-2.7 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, medical diagnostics, and automotive body control modules requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.

Supply support for AT24C02N-10SU-2.7 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 memory solutions for industrial, automotive, and consumer markets.

AT24C02N-10SU-2.7 belongs to Microchip's AT24Cxx family of I²C-compatible serial EEPROMs, designed specifically for reliable, low-power, pin-efficient nonvolatile storage in resource-constrained embedded systems.

FAQ

What is the maximum I²C clock frequency supported by AT24C02N-10SU-2.7?

The AT24C02N-10SU-2.7 supports up to 400 kHz I²C clock frequency when VCC is 2.7 V or higher. At lower voltages (e.g., 1.8 V variants), the maximum is 100 kHz. This is explicitly specified in Table 5 of the official datasheet (0180Z1–SEEPR–5/07), and the AT24C02N-10SU-2.7 variant is rated for the 2.7–5.5 V range - confirming 400 kHz operation. No firmware or external circuitry is required to enable this speed.

Does AT24C02N-10SU-2.7 include hardware write protection?

Yes, AT24C02N-10SU-2.7 includes a dedicated Write Protect (WP) pin that provides hardware-level write lockout. When WP is tied to VCC, the entire 2 Kbit array is protected from write operations - including byte, page, and sequential writes. This function is documented in Table 2 and Pin Description section of the AT24C01A/02/04/08A/16A datasheet, and applies identically to the AT24C02N-10SU-2.7 variant.

What package type is used for AT24C02N-10SU-2.7?

AT24C02N-10SU-2.7 uses an 8-lead JEDEC SOIC package (designated 8S1), 0.150" wide, with green RoHS-compliant finish and NiPdAu lead plating. This is confirmed in the AT24C02 Ordering Information table (page 14), where "AT24C02N-10SU-2.7(2)" maps directly to "8S1" package type. The "SU" suffix denotes SOIC, and "-2.7" confirms the 2.7–5.5 V operating range.

Is AT24C02N-10SU-2.7 suitable for automotive applications?

AT24C02N-10SU-2.7 is qualified for industrial temperature range (–40°C to +85°C) and meets RoHS requirements, but it is not AEC-Q100 qualified. While widely used in automotive body electronics (e.g., BCM settings), Microchip explicitly states "Automotive Devices Available" for the broader AT24Cxx family - meaning AEC-Q100 versions exist (e.g., AT24C02C-SSHM-T), but AT24C02N-10SU-2.7 itself is not automotive-qualified. For production automotive use, consult Microchip's automotive-grade ordering codes.

How many devices can share the same I²C bus with AT24C02N-10SU-2.7?

Up to eight AT24C02N-10SU-2.7 devices can operate on a single I²C bus, enabled by the three hardware address pins (A0, A1, A2). Each combination of high/low on these pins sets a unique 3-bit address segment, allowing slave addresses from 0x50 to 0x57. This is confirmed in the Device Addressing section (page 9) and Pin Description (page 3) of the AT24C01A/02/04/08A/16A datasheet, and applies directly to the AT24C02N-10SU-2.7 variant.

AT24C02N-10SU-2.7 Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

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-SOIC

AT24C02N-10SU-2.7 FAQ

1.How can I place an order for AT24C02N-10SU-2.7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C02N-10SU-2.7 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 AT24C02N-10SU-2.7 reliable?

The price and inventory of AT24C02N-10SU-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02N-10SU-2.7 is usually 5 days.

3.What payment methods are accepted for AT24C02N-10SU-2.7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02N-10SU-2.7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C02N-10SU-2.7?

AT24C02N-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C02N-10SU-2.7 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 AT24C02N-10SU-2.7?

For technical support, including AT24C02N-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02N-10SU-2.7 requirements.

6.How does Aetrix verify that AT24C02N-10SU-2.7 is sourced from the original manufacturer or authorized distributors?

All AT24C02N-10SU-2.7 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 AT24C02N-10SU-2.7 meets industry standards.

7.What is the process for return or replacement of AT24C02N-10SU-2.7?

All AT24C02N-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02N-10SU-2.7, 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 AT24C02N-10SU-2.7 part is unused and in its original packaging.

Return procedure for AT24C02N-10SU-2.7:

1.Submit a request within 90 days.

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

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