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Microchip Technology AT24C02A-10TU-2.7
- Part No.:
- AT24C02A-10TU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C02A-10TU-2.7.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,765
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Product details
Overview
AT24C02A-10TU-2.7 from Microchip Technology (formerly Atmel) is a 2 Kbit I²C-compatible serial EEPROM with 256 × 8-bit organization, 2.7V to 5.5V supply operation, 400 kHz max clock rate at 2.7V, hardware write protection via WP pin, and automotive-grade temperature range (−40°C to +85°C). It serves as nonvolatile configuration storage in microcontroller-based sensor nodes and industrial control modules.
For engineers reviewing the AT24C02A-10TU-2.7 datasheet, AT24C02A-10TU-2.7 pinout, AT24C02A-10TU-2.7 application, or AT24C02A-10TU-2.7 equivalent, key selection criteria include its 8-byte page write capability, Schmitt-triggered noise-immune inputs, 1 million write endurance, 100-year data retention, and TSSOP-8 green package compliance.
Technical Context
The AT24C02A-10TU-2.7 implements a two-wire I²C interface with bidirectional open-drain SDA and edge-triggered SCL, supporting standard-mode (100 kHz) and fast-mode (400 kHz) timing. Its internal address counter enables current-address and sequential reads without retransmitting the word address.
Hardware write protection is enforced by the WP pin: tied to VCC, it locks the upper 1K-bit array; tied to GND, full read/write access is enabled. The device uses internally timed 5 ms max write cycles and supports acknowledge polling for host synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 × 8), organized in 32 pages of 8 bytes each |
| Supply Voltage Range | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V logic systems |
| I²C Clock Rate | Up to 400 kHz at 2.7V - enables faster firmware updates and parameter writes than legacy 100 kHz EEPROMs |
| Write Endurance | 1,000,000 cycles - suitable for logging applications with frequent timestamped writes |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended embedded deployments |
| Operating Temperature | −40°C to +85°C - qualified for under-hood automotive and industrial ambient environments |
| Package | 8-lead TSSOP (8A2), lead-free/halogen-free - surface-mount compatible with automated PCB assembly |
Pinout & Package
AT24C02A-10TU-2.7 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP-8, JEDEC MO-153 AA), 4.4 mm body width, 0.65 mm lead pitch, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Hardwired device address inputs | Enable up to eight AT24C02A devices on one I²C bus; A0–A2 must be externally tied to VCC or GND |
| SDA | Serial data line | Bidirectional open-drain I/O; requires external pull-up resistor; supports wire-OR with other I²C devices |
| SCL | Serial clock input | Positive-edge sampled clock input; controls timing of all data transfers |
| WP | Write protect control | Hardware-enforced lock: VCC = upper 1K-bit protected; GND = full read/write access |
| VCC | Power supply | 2.7V to 5.5V main supply; powers internal logic and memory array |
| GND | Ground reference | Common return path for all signals and supply current |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire I²C interface | Reduces PCB routing complexity vs. SPI; shares bus with sensors, ADCs, and other peripherals |
| Schmitt-trigger, filtered inputs | Rejects high-frequency noise on SCL/SDA lines-critical in electrically noisy industrial enclosures |
| 8-byte page write mode | Minimizes I²C transaction overhead: up to 8 bytes written per stop condition, improving write throughput |
| Self-timed 5 ms max write cycle | Eliminates need for host wait-state polling; allows host to perform other tasks during write execution |
| Automotive-grade qualification | Validated for extended temperature and humidity stress-meets AEC-Q100 Class 2 requirements |
Applications
| Industrial Sensor Calibration | Medical Device Configuration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain coefficients for analog front-end sensors in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-up via I²C; no timing-critical latency required. Use Value: Enables field-replaceable sensor modules without recalibration; retains values across 100+ years and 1M write cycles. | Use Scenario: Holding user-selectable therapy parameters and safety limits in portable infusion pumps. IC Role / Device Role / Timing Role: Secure configuration store with hardware write protection (WP tied to VCC) preventing accidental overwrite during runtime. Use Value: Ensures regulatory compliance via immutable critical settings; supports audit-ready parameter history logging. |
| Automotive Body Control Module | Smart Energy Meter Firmware Patch Storage |
Use Scenario: Saving seat/mirror position presets and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to 3.3V MCU over I²C; operates down to −40°C ambient. Use Value: Meets automotive temperature and reliability requirements; TSSOP-8 footprint fits space-constrained door ECUs. | Use Scenario: Storing delta patches for firmware updates in utility-grade electricity meters deployed outdoors. IC Role / Device Role / Timing Role: Robust nonvolatile storage for signed update payloads; accessed only during scheduled maintenance windows. Use Value: Guarantees patch integrity over decades despite thermal cycling and humidity exposure. |
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 2 Kbit size, I²C interface, and TSSOP-8 package; 1.7V–5.5V supply; 400 kHz max clock; 1M write cycles | Qualified to industrial temp (−40°C to +85°C); lacks explicit automotive qualification documentation | Preferred where cost sensitivity outweighs automotive qualification requirements |
| ON Semiconductor CAT24C02HU4I-GT3 | 2 Kbit, I²C, TSSOP-8; 1.7V–5.5V; 400 kHz; 1M write cycles; integrated 4 kΩ pull-up on SDA/SCL | Includes internal pull-ups-reduces BOM count but limits bus capacitance headroom | Best for space-constrained designs where external pull-ups cannot be accommodated |
Compared with AT24C02A-10TU-2.7, the M24C02-RMN6TP offers identical functionality without automotive validation, while the CAT24C02HU4I-GT3 trades external component count for reduced I²C bus flexibility-both require layout review for signal integrity if replacing AT24C02A-10TU-2.7 in existing designs.
Availability
AT24C02A-10TU-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical device configuration, automotive body control modules, and smart energy meter firmware patch storage requiring stable component supply across extended product lifecycles.
Supply support for AT24C02A-10TU-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 nonvolatile memory solutions, with broad industrial and automotive qualification expertise.
The AT24C02A-10TU-2.7 belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power, I²C-based configuration and calibration data storage in harsh-environment embedded systems.
FAQ
What is the maximum I²C clock frequency supported by the AT24C02A-10TU-2.7?
The AT24C02A-10TU-2.7 supports up to 400 kHz clock frequency when operated at VCC = 2.7V, 2.5V, or 5.0V. At 1.8V operation (not applicable to this -2.7 variant), the maximum is 100 kHz. This fast-mode capability reduces write latency compared to standard-mode-only EEPROMs and aligns with modern MCU I²C peripherals.
How does the Write Protect (WP) pin function on the AT24C02A-10TU-2.7?
On the AT24C02A-10TU-2.7, the WP pin provides hardware-level write protection: when pulled to VCC, it locks the upper 1K-bit half of the memory array; when grounded, full read/write access is enabled. This prevents accidental overwrites of critical calibration or configuration data during system operation or firmware updates.
What package type is used for the AT24C02A-10TU-2.7?
The AT24C02A-10TU-2.7 uses an 8-lead TSSOP package (JEDEC MO-153 AA, body code 8A2), measuring 4.4 mm × 3.0 mm with 0.65 mm lead pitch. It is lead-free and halogen-free, compliant with RoHS Directive 2011/65/EU, and optimized for automated surface-mount assembly.
Does the AT24C02A-10TU-2.7 support page write operations?
Yes, the AT24C02A-10TU-2.7 supports 8-byte page write mode, allowing up to eight consecutive bytes to be written in a single I²C transaction. This improves write efficiency versus byte-by-byte writes and reduces bus arbitration overhead-particularly valuable in time-sensitive embedded applications.
What is the data retention specification for the AT24C02A-10TU-2.7?
The AT24C02A-10TU-2.7 guarantees 100 years of data retention at +25°C ambient temperature. Retention degrades predictably with elevated temperature per JEDEC JESD22-A117; at +85°C, retention remains >10 years. This ensures long-term reliability in infrastructure and medical equipment with multi-decade service life.
AT24C02A-10TU-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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-10TU-2.7 FAQ
1.How can I place an order for AT24C02A-10TU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C02A-10TU-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 AT24C02A-10TU-2.7 reliable?
The price and inventory of AT24C02A-10TU-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 AT24C02A-10TU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C02A-10TU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C02A-10TU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C02A-10TU-2.7?
AT24C02A-10TU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C02A-10TU-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 AT24C02A-10TU-2.7?
For technical support, including AT24C02A-10TU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C02A-10TU-2.7 requirements.
6.How does Aetrix verify that AT24C02A-10TU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C02A-10TU-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 AT24C02A-10TU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C02A-10TU-2.7?
All AT24C02A-10TU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C02A-10TU-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 AT24C02A-10TU-2.7 part is unused and in its original packaging.
Return procedure for AT24C02A-10TU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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