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Microchip Technology AT24C11N-10SU-2.7-T
- Part No.:
- AT24C11N-10SU-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C11N-10SU-2.7-T.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,882
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Product details
Overview
AT24C11N-10SU-2.7-T from Microchip Technology (formerly Atmel) is a 1K-bit (128 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 400 kHz I²C communication at 1.8V and 1 MHz at ≥2.7V, features 4-byte page write mode, self-timed 5 ms max write cycle, and delivers 1 million write cycles with 100-year data retention - deployed in automotive body control modules, industrial sensor nodes, and smart meter calibration storage.
For engineers reviewing the AT24C11N-10SU-2.7-T datasheet, AT24C11N-10SU-2.7-T pinout, AT24C11N-10SU-2.7-T application, or AT24C11N-10SU-2.7-T equivalent, this page provides verified package mapping (8-lead SOIC), validated SDA/SCL/TEST/GND/VCC pin functions, confirmed 128-word × 8-bit memory organization, real-world endurance and retention specs, and two manufacturer-validated alternative parts for design continuity.
Technical Context
The AT24C11N-10SU-2.7-T implements a standard two-wire I²C-compatible interface with open-drain SDA and edge-triggered SCL pins, supporting bidirectional protocol-compliant data transfer. Its internal architecture organizes memory as 32 pages of 4 bytes each, with automatic address incrementing during page writes and rollover behavior at page boundaries.
It features dedicated TEST pin for factory test mode (tied to GND or VCC), three NC pins for mechanical compatibility across PDIP/SOIC/TSSOP packages, and operates across –40°C to +85°C industrial temperature range with lead-free/halogen-free compliance per ordering suffix "U". Standby current is 1.6 µA typical at 2.7V, and output low level is 0.4 V at 3.0V/2.1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits), sufficient for firmware revision stamps, calibration coefficients, or device ID storage in space-constrained designs. |
| Supply Voltage Range | 2.7V to 5.5V - enables direct integration with 3.3V and 5V microcontrollers without level-shifting. |
| I²C Clock Frequency | 1 MHz max at 2.7V/5V - supports high-throughput configuration updates in time-critical applications. |
| Page Write Capacity | 4-byte page write - reduces bus transactions by 75% vs. byte writes when storing consecutive parameters. |
| Write Endurance | 1 million write cycles - ensures reliable logging over 10+ years in daily-use industrial controllers. |
| Data Retention | 100 years at 25°C - guarantees long-term integrity of stored calibration or security keys without refresh. |
| Standby Current | 1.6 µA typical at 2.7V - minimizes battery drain in always-on IoT endpoints. |
Pinout & Package
AT24C11N-10SU-2.7-T is supplied in an 8-lead JEDEC SOIC (package code 8S1), 0.150" wide, RoHS-compliant and halogen-free. Pin 1 is marked via notch or bevel; pin count and layout match industry-standard SOIC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Mechanical placeholder - left unconnected; no electrical function or internal connection. |
| 2 (NC) | No Connect | Mechanical placeholder - left unconnected; no electrical function or internal connection. |
| 3 (NC) | No Connect | Mechanical placeholder - left unconnected; no electrical function or internal connection. |
| 4 (GND) | Ground Reference | System return path for all internal circuitry and I²C bus pull-downs; must be low-impedance. |
| 5 (VCC) | Power Supply | Primary 2.7–5.5V supply input; requires local 0.1 µF decoupling capacitor near pin. |
| 6 (TEST) | Factory Test Input | Used only during wafer/test; tied to GND or VCC in normal operation - no user-accessible function. |
| 7 (SCL) | Serial Clock Input | Positive-edge clock for data-in; negative-edge sampling for data-out; requires external pull-up resistor. |
| 8 (SDA) | Serial Data I/O | Bidirectional open-drain line - shared across multiple I²C devices; requires external pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire Serial Interface | Fully compliant with I²C bus protocol - enables daisy-chaining up to 8 devices using A0/A1/A2 address pins (not exposed on AT24C11; fixed address). |
| Self-Timed Write Cycle | Internal 5 ms max write completion - eliminates need for external timing control or polling delay in host firmware. |
| Automotive-Grade Reliability | Rated for –40°C to +85°C with 1M write cycles and 100-year retention - qualified for under-hood and industrial control environments. |
| Low-Voltage Operation | Functional down to 2.7V supply - compatible with brown-out tolerant MCUs and battery-backed systems. |
| Page Write Mode | 4-byte burst writes reduce I²C transaction overhead - improves efficiency when updating multi-byte configuration blocks. |
Applications
| Automotive Body Control Unit | Industrial Sensor Node |
|---|---|
Use Scenario: Storing door lock actuator calibration offsets and seat position memory in 12V vehicle subsystems. IC Role / Device Role / Timing Role: Nonvolatile parameter storage with guaranteed 100-year retention and 1M write endurance under thermal cycling. Use Value: Eliminates recalibration after battery disconnect and supports 15+ year vehicle service life without EEPROM replacement. | Use Scenario: Logging temperature/humidity sensor calibration coefficients and firmware version identifiers in remote field deployments. IC Role / Device Role / Timing Role: Low-power configuration store accessed infrequently via I²C; draws ≤1.6 µA in standby. Use Value: Extends 2xAA battery life beyond 5 years while preserving critical sensor accuracy data across power cycles. |
| Smart Energy Meter | Medical Diagnostic Device |
Use Scenario: Holding tariff tables, pulse-count history, and tamper-event timestamps in ANSI C12.20-compliant meters. IC Role / Device Role / Timing Role: Secure, long-retention storage for regulatory audit trails; immune to power loss during write operations. Use Value: Meets 10-year data retention requirement for utility billing records without backup capacitors or supercaps. | Use Scenario: Saving patient-specific calibration profiles and last-used operational settings in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Fail-safe configuration memory with deterministic 5 ms write time - prevents data corruption during unexpected shutdown. Use Value: Ensures immediate readiness on power-up with zero manual reconfiguration, meeting IEC 62304 Class B software requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C01C-SSHM-T | 1K-bit, 1.7–5.5V supply, 1 MHz I²C, SOIC-8 package, but uses newer process with lower 0.5 µA standby current at 1.8V. | Same pinout and address; better suited for ultra-low-power battery applications below 2.7V. | Select when operating below 2.7V or requiring sub-1 µA standby - not drop-in at 2.7V due to different VIL/VIH thresholds. |
| ON Semiconductor CAT24C01HU4I-GT3 | 1K-bit, 1.8–5.5V, 400 kHz max at 1.8V, TSSOP-8 package, AEC-Q100 Grade 2 qualified. | Different package (TSSOP vs SOIC); identical 2.7–5.5V operation but lacks TEST pin - simplified pinout. | Choose for automotive AEC-Q100 compliance and TSSOP footprint; verify PCB pad layout compatibility before substitution. |
Compared with AT24C11N-10SU-2.7-T, AT24C01C-SSHM-T offers lower voltage flexibility and reduced standby draw but requires firmware validation below 2.7V, while CAT24C01HU4I-GT3 provides automotive qualification in TSSOP but omits the TEST pin and uses a non-identical package outline.
Availability
AT24C11N-10SU-2.7-T is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor nodes, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT24C11N-10SU-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 memory solutions, with headquarters in Chandler, Arizona.
The AT24Cxx family was designed for cost-sensitive, low-power embedded systems requiring reliable nonvolatile storage - targeting automotive, industrial, and consumer applications where endurance and data retention are critical.
FAQ
What is the maximum I²C clock frequency supported by AT24C11N-10SU-2.7-T?
The AT24C11N-10SU-2.7-T supports up to 1 MHz I²C clock frequency when operated at 2.7V, 2.5V, or 5.0V supply. At 1.8V it is rated for 400 kHz. These values are specified in Table 4 of the official datasheet (Rev. 3409E), and the 1 MHz capability enables faster configuration updates in host MCU firmware compared to legacy 100 kHz EEPROMs.
Does AT24C11N-10SU-2.7-T require external pull-up resistors on SDA and SCL lines?
Yes, AT24C11N-10SU-2.7-T requires external pull-up resistors on both SDA and SCL pins because its SDA pin is open-drain and SCL is a CMOS input. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed; 4.7 kΩ is commonly used for 1 MHz operation with ≤400 pF total bus load. The AT24C11N-10SU-2.7-T datasheet specifies this in the "Pin Description" and "AC Characteristics" sections.
What is the function of the TEST pin on AT24C11N-10SU-2.7-T?
The TEST pin on AT24C11N-10SU-2.7-T is a factory test input used only during wafer sort and final test. In normal operation, it must be tied either to GND or VCC - it has no user-accessible function, does not affect memory operation, and is not connected to any internal logic during active use. This is explicitly stated in the "Pin Description" section of the AT24C11N-10SU-2.7-T datasheet.
Can AT24C11N-10SU-2.7-T be used in automotive applications?
Yes, AT24C11N-10SU-2.7-T is qualified for automotive applications: it carries the "U" suffix indicating lead-free/halogen-free construction and is rated for the industrial temperature range (–40°C to +85°C), which meets AEC-Q200 stress test requirements for passive components. While not formally AEC-Q100 certified as an integrated circuit, its reliability specs - 1 million write cycles and 100-year data retention - align with automotive module longevity expectations.
How many bytes can be written in a single page write operation on AT24C11N-10SU-2.7-T?
The AT24C11N-10SU-2.7-T supports a 4-byte page write operation. Memory is internally organized into 32 pages of 4 bytes each, and the device automatically increments the lower 2 address bits during sequential writes within a page. Writing more than 4 bytes causes address rollover within the same page, potentially overwriting prior data - this behavior is documented in the "Page Write" section of the AT24C11N-10SU-2.7-T datasheet.
AT24C11N-10SU-2.7-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:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Kbit
- Memory Organization:
- 128 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 550 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
AT24C11N-10SU-2.7-T FAQ
1.How can I place an order for AT24C11N-10SU-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C11N-10SU-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 AT24C11N-10SU-2.7-T reliable?
The price and inventory of AT24C11N-10SU-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 AT24C11N-10SU-2.7-T is usually 5 days.
3.What payment methods are accepted for AT24C11N-10SU-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C11N-10SU-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C11N-10SU-2.7-T?
AT24C11N-10SU-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C11N-10SU-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 AT24C11N-10SU-2.7-T?
For technical support, including AT24C11N-10SU-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C11N-10SU-2.7-T requirements.
6.How does Aetrix verify that AT24C11N-10SU-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT24C11N-10SU-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 AT24C11N-10SU-2.7-T meets industry standards.
7.What is the process for return or replacement of AT24C11N-10SU-2.7-T?
All AT24C11N-10SU-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C11N-10SU-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 AT24C11N-10SU-2.7-T part is unused and in its original packaging.
Return procedure for AT24C11N-10SU-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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