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Microchip Technology AT24C11-10PI-2.7
- Part No.:
- AT24C11-10PI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C11-10PI-2.7.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8DIP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT24C11-10PI-2.7 from Microchip Technology (formerly Atmel) is a 1K-bit serial EEPROM organized as 128 × 8 bits, operating from 2.7V to 5.5V, featuring a two-wire I²C-compatible interface, 4-byte page write capability, and automotive-grade industrial temperature range (–40°C to +85°C) in an 8-lead PDIP package. It delivers high reliability with 1 million write cycles and 100-year data retention for nonvolatile storage in embedded control systems.
For engineers reviewing the AT24C11-10PI-2.7 datasheet, AT24C11-10PI-2.7 pinout, AT24C11-10PI-2.7 application, or AT24C11-10PI-2.7 equivalent, key selection considerations include its 2.7V minimum supply, 400 kHz I²C speed at 1.8V (and 1 MHz at ≥2.7V), SDA/SCL open-drain interface timing, NC/TEST pin configuration, and PDIP package compatibility with legacy through-hole designs.
Technical Context
The AT24C11-10PI-2.7 implements a fixed 7-bit I²C device address with no user-configurable A0–A2 pins, uses bidirectional open-drain SDA with active-low acknowledge polling, and supports byte and 4-byte page write modes with self-timed internal write cycles up to 5 ms. Its memory map comprises 32 pages of 4 bytes each, with optional 33rd page access upon request.
It operates across –40°C to +85°C with VCC = 2.7V–5.5V, exhibits standby current as low as 1.6 µA at 2.7V, and meets I²C timing requirements including tLOW = 1.2 µs (1.8V) / 0.4 µs (≥2.7V), tHD.STA = 0.6 µs, and tSU.STO = 0.6 µs - all validated per JEDEC standard AC test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 × 8), enabling compact firmware parameter or calibration storage without external address latches. |
| Supply Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V logic domains and eliminates need for level-shifting in mixed-voltage systems. |
| I²C Clock Frequency | Up to 1 MHz at 2.7V/5V - supports faster configuration writes than standard 100 kHz EEPROMs while maintaining robust noise immunity. |
| Page Write Capacity | 4-byte per page - reduces transaction overhead versus byte-write-only devices, improving write efficiency in burst-update scenarios. |
| Write Cycle Time | ≤5 ms max - enables predictable firmware timeout handling and avoids indefinite blocking during nonvolatile commits. |
| Data Retention | 100 years - ensures long-term validity of stored settings across product lifecycles in industrial and automotive deployments. |
| Endurance | 1 million write cycles - supports frequent runtime updates (e.g., metering logs, sensor calibration) without premature wear-out. |
Pinout & Package
AT24C11-10PI-2.7 is supplied in an 8-lead PDIP (8P3) package with 0.300" body width, suitable for through-hole prototyping and legacy PCB assembly. Pin 1 is located at the left end of the top row when viewing the top marking side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | No Connect (NC) | Unbonded die pads - must remain unconnected; floating or tied to GND/VCC may cause undefined behavior. |
| 4 | GND | Ground reference for all internal circuitry and I²C bus termination - requires low-impedance connection to system ground plane. |
| 5 | VCC | Primary power supply input - must be decoupled with ≥0.1 µF ceramic capacitor near the pin to suppress I²C switching noise. |
| 6 | TEST | Factory test input - externally tied to GND or VCC per production test mode; not used in normal operation and should be left floating or weakly pulled. |
| 7 | SCL | Serial clock input - driven by master controller; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC for proper I²C bus signaling. |
| 8 | SDA | Serial data bidirectional I/O - open-drain output requiring same pull-up as SCL; shared across multiple I²C slaves on same bus. |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire serial interface | Fully compliant with I²C protocol (standard-mode), reducing PCB routing complexity and pin count versus SPI or parallel EEPROMs. |
| 4-byte page write mode | Enables writing four related bytes (e.g., 16-bit ADC offset + gain, timestamp LSB/MSB) in one atomic transaction, minimizing bus arbitration overhead. |
| Self-timed write cycle | Eliminates need for external write-complete polling delay - firmware can issue ACK polling after stop condition to determine readiness. |
| Automotive-grade temperature range | Validated for –40°C to +85°C operation - suitable for under-hood, industrial control, and outdoor equipment where ambient extremes occur. |
| Lead-free/halogen-free option | RoHS-compliant construction (U-suffix variants) - meets global environmental compliance mandates without sacrificing electrical performance. |
Applications
| Industrial Sensor Calibration | Smart Meter Firmware Storage |
|---|---|
Use Scenario: Storing factory-trimmed sensor gain/offset coefficients and linearization tables in temperature- or pressure-sensing modules deployed in HVAC or process control systems. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent parameter storage accessible via microcontroller I²C during power-up initialization. Use Value: Enables field-replaceable sensors with pre-programmed calibration data, eliminating per-unit firmware flashing and reducing manufacturing test time. | Use Scenario: Holding tariff schedules, billing counters, and communication module credentials in utility smart meters operating continuously for >10 years. IC Role / Device Role / Timing Role: Secure, low-power data logger storing critical operational records with guaranteed 100-year retention and 1M-cycle endurance. Use Value: Supports regulatory compliance for long-term energy usage logging without battery-backed SRAM or costly FRAM alternatives. |
| Automotive Body Control Module | Medical Device Configuration |
Use Scenario: Saving seat position memory, mirror presets, and lighting profiles in automotive BCMs exposed to under-dash thermal cycling. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfacing directly with 3.3V microcontroller I²C bus for infrequent but mission-critical user preference storage. Use Value: Meets AEC-Q100 stress requirements and provides reliable recall of settings after vehicle battery disconnect or ECU reset. | Use Scenario: Storing FDA-mandated device serial numbers, calibration history, and operator audit trails in portable diagnostic instruments. IC Role / Device Role / Timing Role: Tamper-resistant configuration store accessed only during boot or maintenance mode, with write-protection enforced by hardware timing windows. Use Value: Ensures traceability and regulatory data integrity without requiring complex secure elements or cryptographic key management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C01A-10PU-2.7 | 1K-bit capacity, same 2.7V–5.5V range and PDIP package, but newer revision with enhanced ESD rating (4 kV HBM) and tighter tAA (0.55 µs max). | Identical use cases; preferred for new designs requiring higher robustness in noisy industrial environments. | Select AT24C01A-10PU-2.7 if board layout allows RoHS-compliant lead-free assembly and higher ESD immunity is required. |
| M95010-RMN6TP | 1K-bit SPI EEPROM (not I²C), 2.5V–5.5V supply, 8-lead SOIC package, 20 MHz clock, no TEST/NC pins - different interface and pinout. | Requires MCU SPI peripheral instead of I²C; unsuitable for existing I²C bus topology or pin-constrained designs using SDA/SCL. | Choose M95010-RMN6TP only when migrating to SPI-based architecture or when higher write throughput (vs. I²C 1 MHz) justifies interface redesign. |
Compared with AT24C11-10PI-2.7, AT24C01A-10PU-2.7 offers improved ESD tolerance and faster data validity timing but shares identical memory organization and PDIP footprint, whereas M95010-RMN6TP demands full interface rework and provides no direct pin or protocol compatibility.
Availability
AT24C11-10PI-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter firmware storage, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT24C11-10PI-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 delivering scalable, low-power microcontrollers, analog, FPGA, and memory solutions for embedded control applications.
The AT24C11-10PI-2.7 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, space-constrained systems needing reliable nonvolatile storage with minimal MCU resource usage and broad voltage compatibility.
FAQ
What is the maximum I²C clock frequency supported by AT24C11-10PI-2.7?
The AT24C11-10PI-2.7 supports up to 1 MHz I²C clock frequency when operated at VCC ≥ 2.7V (including 3.3V and 5V systems). At 1.8V operation (not applicable to this -2.7 variant), it supports 400 kHz. The 1 MHz capability enables faster configuration writes compared to legacy 100 kHz EEPROMs, reducing system boot latency in time-critical applications.
Does AT24C11-10PI-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C11-10PI-2.7 requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is a CMOS input. Typical values range from 2.2 kΩ to 10 kΩ to VCC, selected based on bus capacitance and desired rise time. Failure to install pull-ups will prevent I²C communication from initializing.
Can AT24C11-10PI-2.7 be used in automotive applications?
Yes, AT24C11-10PI-2.7 is rated for industrial temperature range (–40°C to +85°C) and offered in automotive-grade versions with extended qualification. Its 1 million write cycles, 100-year data retention, and robust I²C timing make it suitable for body control modules, seat memory, and dashboard configuration storage where reliability under thermal cycling is essential.
What is the function of the TEST pin on AT24C11-10PI-2.7?
The TEST pin on AT24C11-10PI-2.7 is reserved for factory testing and must be left unconnected (floating) or weakly pulled to GND/VCC in normal operation. It has no functional role in user applications, and driving it actively may interfere with internal test modes or cause undefined behavior during power-up sequences.
How many write cycles can AT24C11-10PI-2.7 endure before failure?
AT24C11-10PI-2.7 is specified for 1 million write cycles per memory location, verified under typical operating conditions (VCC = 2.7V–5.5V, TA = –40°C to +85°C). This endurance supports frequent runtime updates - such as logging event timestamps or recalibrating sensors - over the full service life of industrial and automotive equipment without data corruption risk.
AT24C11-10PI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C11-10PI-2.7 FAQ
1.How can I place an order for AT24C11-10PI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C11-10PI-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 AT24C11-10PI-2.7 reliable?
The price and inventory of AT24C11-10PI-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 AT24C11-10PI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C11-10PI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C11-10PI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C11-10PI-2.7?
AT24C11-10PI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C11-10PI-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 AT24C11-10PI-2.7?
For technical support, including AT24C11-10PI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C11-10PI-2.7 requirements.
6.How does Aetrix verify that AT24C11-10PI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C11-10PI-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 AT24C11-10PI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C11-10PI-2.7?
All AT24C11-10PI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C11-10PI-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 AT24C11-10PI-2.7 part is unused and in its original packaging.
Return procedure for AT24C11-10PI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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