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

Microchip Technology AT24C02C-SSPD-T

Name: AT24C02C-SSPD-T
Brand: Microchip Technology
SKU: AT24C02C-SSPD-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C02C-SSPD-T

Manufacturer:: Microchip Technology

Category:: Memory

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

Datasheet:: AT24C02C-SSPD-T.pdf

Description:: IC EEPROM 2KBIT I2C 1MHZ 8SOIC

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Product details

Overview

AT24C02C-SSPD-T from Microchip Technology (formerly Atmel) is a 2-kilobit (256 × 8) automotive-grade I²C-compatible serial EEPROM with 8-byte page write capability, 1,000,000 write cycles endurance, and 100-year data retention. It operates from 2.5V to 5.5V across -40°C to +125°C (Grade 1), features hardware write protection via the WP pin, and is packaged in an 8-lead JEDEC SOIC (8S1). It serves as nonvolatile configuration storage in engine control units and ADAS sensor modules.

For engineers reviewing the AT24C02C-SSPD-T datasheet, AT24C02C-SSPD-T pinout, AT24C02C-SSPD-T application, or AT24C02C-SSPD-T equivalent, key selection criteria include Grade 1 automotive qualification, 400 kHz I²C speed at 2.5V, Schmitt-trigger inputs for noise immunity, self-timed 5 ms max write cycle, and compatibility with standard 2-wire bus protocols in safety-critical embedded systems.

Technical Context

The AT24C02C-SSPD-T implements a true 2-wire I²C interface with bidirectional open-drain SDA and edge-triggered SCL, supporting standard-mode (100 kHz) and fast-mode (400 kHz) operation. Its internal memory is organized as 32 pages of 8 bytes each, requiring an 8-bit word address for random access.

It integrates Schmitt-trigger inputs on all control pins (A0–A2, SCL, SDA, WP), enabling robust operation in electrically noisy automotive environments. The device enters low-power standby mode after Stop condition receipt or power-up, drawing ≤6.0 µA at 5.0V and -40°C to +125°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	2,048 bits (256 words × 8 bits), sufficient for storing calibration data, VIN, firmware version, or fault logs in ECUs.
Interface	I²C-compatible 2-wire serial bus with 7-bit device address (1010xxxR/W), enabling up to eight devices on one bus.
Write Cycle Time	Max 5 ms self-timed internal write; no external timing control needed-simplifies host firmware design.
Endurance & Retention	1,000,000 write cycles and 100 years data retention at +125°C-meets AEC-Q100 Grade 1 reliability requirements.
Supply Voltage Range	2.5V to 5.5V (Grade 1); supports direct connection to 3.3V or 5V MCU I/O rails without level shifting.
Operating Temperature	-40°C to +125°C (AEC-Q100 Grade 1); qualified for under-hood and transmission-control module deployment.
Page Write Capacity	8-byte page writes reduce bus transactions during bulk updates-improves system-level write throughput vs. byte-write only devices.

Pinout & Package

AT24C02C-SSPD-T is housed in an 8-lead JEDEC SOIC package (8S1), 0.150" wide, with gull-wing leads. Pin 1 is marked by a notch or dot; the package is RoHS-compliant and lead-free (NiPdAu finish).

Pin/Terminal	Circuit Role	Design Meaning
A0	Device Address Input	Hardwired address bit enabling up to eight AT24C02C devices on same I²C bus; tied high/low to set unique 3-bit address (A2–A0).
A1	Device Address Input	Second hardwired address bit; used with A0 and A2 to configure full 3-bit device address for multi-device topology.
A2	Device Address Input	Most significant device address bit; determines position in 8-device I²C address map (1010xxxR/W format).
GND	Ground Reference	Primary return path for VCC and signal currents; must be low-impedance to ensure noise immunity and stable logic thresholds.
SDA	Serial Data I/O	Open-drain bidirectional line; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC for proper I²C signaling.
SCL	Serial Clock Input	Positive-edge clock input controlling data sampling; driven by master only; Schmitt-trigger input rejects noise on clock line.
WP	Write Protect Control	Hardware lock: pulled high to VCC disables all writes (full-array protection); grounded enables normal read/write operations.
VCC	Power Supply	Single 2.5–5.5V supply; internal power-on reset ensures reliable initialization; no separate VDD/VSS decoupling required beyond standard 0.1 µF ceramic.

Key Features

Feature	Design Value
Automotive Grade 1 Qualification	Validated per AEC-Q100 Rev G for -40°C to +125°C operation-enables use in powertrain and chassis control modules without derating.
Hardware Write Protection	WP pin provides fail-safe, pin-level disable of write operations-prevents accidental overwrites during ECU reprogramming or voltage transients.
Schmitt-Trigger Inputs	All digital inputs (A0–A2, SCL, SDA, WP) feature hysteresis-rejects >50 ns noise pulses and ensures clean state transitions in high-EMI vehicle environments.
Partial Page Writes	Allows writing fewer than 8 bytes within a page without corrupting adjacent data-reduces firmware complexity for small parameter updates.
Low Standby Current	Max 6.0 µA at 5.0V and +125°C-minimizes parasitic drain in always-on vehicle subsystems like telematics or body controllers.

Applications

Engine Control Unit (ECU)	Advanced Driver Assistance Systems (ADAS)
Use Scenario: Storing real-time calibration coefficients, fuel trim values, and diagnostic trouble codes (DTCs) that persist across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory interfaced directly to the ECU's microcontroller via I²C. Use Value: Enables deterministic cold-start behavior and regulatory-compliant OBD-II logging without battery-backed SRAM or higher-cost FRAM.	Use Scenario: Retaining camera lens calibration offsets, radar beam alignment data, and sensor fusion parameters after vehicle shutdown. IC Role / Device Role / Timing Role: Persistent parameter storage for vision/radar processing units operating in extended temperature ranges. Use Value: Maintains system accuracy across thermal cycling (-40°C to +125°C) and supports ASIL-B functional safety requirements via proven EEPROM reliability.
Transmission Control Module (TCM)	Body Control Module (BCM)
Use Scenario: Recording gear shift adaptation profiles, clutch wear metrics, and torque converter learning data accumulated over thousands of drive cycles. IC Role / Device Role / Timing Role: High-endurance data logger for mechanical wear tracking, accessed asynchronously during idle periods. Use Value: Achieves >1M write cycles-exceeds typical TCM lifetime requirements-without wear leveling firmware overhead.	Use Scenario: Saving user preferences (seat position, mirror angle, lighting themes) and door/window auto-reverse settings across power loss events. IC Role / Device Role / Timing Role: Low-power, pin-efficient nonvolatile memory for infotainment-adjacent subsystems with tight board space constraints. Use Value: JEDEC SOIC footprint allows drop-in replacement of legacy EEPROMs; 2.5V min operation supports 3.3V BCM power domains.

Engine Control Unit (ECU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Storing real-time calibration coefficients, fuel trim values, and diagnostic trouble codes (DTCs) that persist across ignition cycles.

IC Role / Device Role / Timing Role: Nonvolatile configuration and event logging memory interfaced directly to the ECU's microcontroller via I²C.

Use Value: Enables deterministic cold-start behavior and regulatory-compliant OBD-II logging without battery-backed SRAM or higher-cost FRAM.

Use Scenario: Retaining camera lens calibration offsets, radar beam alignment data, and sensor fusion parameters after vehicle shutdown.

IC Role / Device Role / Timing Role: Persistent parameter storage for vision/radar processing units operating in extended temperature ranges.

Use Value: Maintains system accuracy across thermal cycling (-40°C to +125°C) and supports ASIL-B functional safety requirements via proven EEPROM reliability.

Transmission Control Module (TCM)

Body Control Module (BCM)

Use Scenario: Recording gear shift adaptation profiles, clutch wear metrics, and torque converter learning data accumulated over thousands of drive cycles.

IC Role / Device Role / Timing Role: High-endurance data logger for mechanical wear tracking, accessed asynchronously during idle periods.

Use Value: Achieves >1M write cycles-exceeds typical TCM lifetime requirements-without wear leveling firmware overhead.

Use Scenario: Saving user preferences (seat position, mirror angle, lighting themes) and door/window auto-reverse settings across power loss events.

IC Role / Device Role / Timing Role: Low-power, pin-efficient nonvolatile memory for infotainment-adjacent subsystems with tight board space constraints.

Use Value: JEDEC SOIC footprint allows drop-in replacement of legacy EEPROMs; 2.5V min operation supports 3.3V BCM power domains.

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 density, SOIC-8, I²C interface, but rated for industrial (-40°C to +85°C), not automotive Grade 1.	Lacks AEC-Q100 qualification; unsuitable for powertrain or safety-critical modules requiring Grade 1 temp range.	Select only for cost-sensitive non-automotive or cabin-only applications where -40°C to +85°C suffices.
ON Semiconductor CAT24C02HU4IGT3	2K I²C EEPROM in 8-pin UDFN (2×3 mm); same Grade 1 rating, but different package and pinout (no A0/A1/A2 pins-fixed address).	UDFN footprint saves PCB area but requires re-layout; fixed address limits multi-device bus scalability.	Choose when board space is constrained and single-device I²C topology is acceptable.

Compared with M24C02-RMN6TP and CAT24C02HU4IGT3, AT24C02C-SSPD-T uniquely combines AEC-Q100 Grade 1 qualification, configurable 3-bit addressing, JEDEC SOIC compatibility, and full 2.5–5.5V operation-making it the preferred choice for new automotive designs requiring field-proven reliability and layout flexibility.

Availability

AT24C02C-SSPD-T is available at Aetrix Electronics and suitable for engine control units, ADAS sensor modules, and transmission control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AT24C02C-SSPD-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 memory solutions, with deep expertise in automotive and industrial embedded systems.

The AT24CxxC family was designed specifically for automotive applications demanding high reliability, extended temperature operation, and seamless integration into I²C-based control architectures-targeting ECU, TCM, and ADAS subsystems.

FAQ

What is the maximum I²C clock frequency supported by AT24C02C-SSPD-T?

The AT24C02C-SSPD-T supports up to 400 kHz I²C clock frequency at VCC = 2.5V, meeting Fast-mode specification. At 5.0V, it remains compatible with standard-mode (100 kHz) and Fast-mode buses. Timing parameters including tLOW (1200 ns min), tHIGH (600 ns min), and tSU.DAT (100 ns min) are fully characterized across -40°C to +125°C for robust timing margin validation in automotive designs using AT24C02C-SSPD-T.

Does AT24C02C-SSPD-T require external pull-up resistors on SDA and SCL lines?

Yes, AT24C02C-SSPD-T requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; for 400 kHz operation with ≤400 pF total bus capacitance, 4.7 kΩ is recommended. This ensures valid logic-high levels and meets I²C rise time specifications (tR ≤ 300 ns) specified in the AT24C02C-SSPD-T datasheet.

How does the Write Protect (WP) pin function on AT24C02C-SSPD-T?

On AT24C02C-SSPD-T, the WP pin provides hardware-level write inhibition: when tied to VCC, it disables all write operations-including byte, page, and sequential writes-to the entire memory array. When grounded, normal read/write functionality is enabled. This feature is active immediately upon power-up and requires no software configuration, making AT24C02C-SSPD-T ideal for protecting critical calibration data during firmware updates or system resets.

Is AT24C02C-SSPD-T pin-compatible with other members of the AT24CxxC family?

Yes, AT24C02C-SSPD-T shares identical pinout, package (8S1 SOIC), and interface behavior with AT24C01C-SSPD-T, AT24C04C-SSPD-T, and AT24C08C-SSPD-T. All use the same A0–A2 address inputs, SDA/SCL/VP/WP/GND/VCC pin assignments and support the same I²C protocol. Memory size differences (1K/2K/4K/8K) do not affect physical or electrical compatibility-enabling scalable BOM management and design reuse across product variants using AT24C02C-SSPD-T.

What is the endurance rating of AT24C02C-SSPD-T, and how is it validated?

AT24C02C-SSPD-T is rated for 1,000,000 write cycles per memory location at 5.0V and 25°C, with data retention guaranteed for 100 years at +125°C. This endurance is verified per AEC-Q100 stress test conditions, including high-temperature operating life (HTOL) and write-cycle stress testing. Real-world reliability exceeds specification due to on-chip write-cycle limiting and charge-pump optimization-ensuring AT24C02C-SSPD-T meets functional safety requirements for automotive control applications.

AT24C02C-SSPD-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 1 MHz

Write Cycle Time - Word, Page:: 5ms

Access Time:: 450 ns

Voltage - Supply:: 2.5V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AT24C02C-SSPD-T FAQ

1.How can I place an order for AT24C02C-SSPD-T through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C02C-SSPD-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 AT24C02C-SSPD-T reliable?

The price and inventory of AT24C02C-SSPD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C02C-SSPD-T is usually 5 days.

3.What payment methods are accepted for AT24C02C-SSPD-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02C-SSPD-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C02C-SSPD-T?

AT24C02C-SSPD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C02C-SSPD-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 AT24C02C-SSPD-T?

For technical support, including AT24C02C-SSPD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02C-SSPD-T requirements.

6.How does Aetrix verify that AT24C02C-SSPD-T is sourced from the original manufacturer or authorized distributors?

All AT24C02C-SSPD-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 AT24C02C-SSPD-T meets industry standards.

7.What is the process for return or replacement of AT24C02C-SSPD-T?

All AT24C02C-SSPD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02C-SSPD-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 AT24C02C-SSPD-T part is unused and in its original packaging.

Return procedure for AT24C02C-SSPD-T:

1.Submit a request within 90 days.

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

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