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Microchip Technology AT24C11-10TI-1.8
- Part No.:
- AT24C11-10TI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C11-10TI-1.8.pdf
- Description:
- IC EEPROM 1KBIT I2C 1MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,023
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Product details
Overview
AT24C11-10TI-1.8 from Microchip Technology (formerly Atmel) is a 1 Kbit (128 × 8) serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 400 kHz I²C communication at 1.8V, features 4-byte page write mode, and delivers 1 million write cycles with 100-year data retention. It serves as nonvolatile configuration storage in automotive body control modules requiring extended temperature operation.
For engineers reviewing the AT24C11-10TI-1.8 datasheet, AT24C11-10TI-1.8 pinout, AT24C11-10TI-1.8 application, or AT24C11-10TI-1.8 equivalent, key selection criteria include its 1.8V minimum supply, industrial temperature range (–40°C to +85°C), TSSOP-8 package, I²C timing compliance at low voltage, and page-write endurance-critical for firmware parameter logging and calibration data storage.
Technical Context
The AT24C11-10TI-1.8 implements a two-wire (I²C-compatible) serial interface with open-drain SDA and edge-triggered SCL, supporting bidirectional data transfer under standard and fast-mode timing. Its memory array is organized into 32 pages of 4 bytes each, with automatic address incrementing within a page and rollover behavior on boundary overflow.
It uses a self-timed internal write cycle (max 5 ms), disables all inputs during write, and supports acknowledge polling for host synchronization. The device includes TEST and NC pins for factory test and layout flexibility, and requires no external components for basic I²C bus operation beyond pull-up resistors on SDA/SCL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1024 bits (128 words × 8 bits); sufficient for storing calibration coefficients, device IDs, or small firmware configuration tables. |
| Supply Voltage Range | 1.8V to 5.5V; enables direct interfacing with 1.8V logic domains without level shifters in battery-powered or ultra-low-power systems. |
| I²C Clock Frequency | 400 kHz at 1.8V; ensures reliable communication in noise-sensitive automotive and industrial environments with minimal bus capacitance impact. |
| Page Write Capacity | 4 bytes per page; reduces write transaction overhead versus byte writes, improving efficiency when updating adjacent configuration fields. |
| Write Endurance | 1 million cycles; supports frequent recalibration or runtime parameter updates over product lifetime without wear-out concerns. |
| Data Retention | 100 years at +25°C; guarantees long-term integrity of stored settings across equipment service life, including unpowered storage periods. |
| Operating Temperature | –40°C to +85°C; qualified for under-hood automotive ECUs and industrial controllers exposed to thermal cycling. |
| Package | 8-lead TSSOP (8A2); surface-mount footprint with 0.65 mm pitch, compatible with automated assembly and offering better thermal dissipation than SOT23. |
Pinout & Package
AT24C11-10TI-1.8 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP, JEDEC MO-153 variation AA), 3.0 mm × 4.4 mm body, 0.65 mm lead pitch, with exposed pad not present. Pin 1 is marked by a beveled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Internally unconnected; must be left floating or tied to GND/NC per layout guidelines-no electrical function. |
| 2 (NC) | No Connect | Internally unconnected; provides mechanical stability and routing flexibility; no signal or power role. |
| 3 (NC) | No Connect | Internally unconnected; allows PCB trace routing beneath IC; no functional impact on operation. |
| 4 (GND) | Ground Reference | Primary return path for VCC current and I²C bus reference; must be low-impedance connection to system ground plane. |
| 5 (VCC) | Power Supply Input | Accepts 1.8V–5.5V DC; bypass capacitor (0.1 µF ceramic) required within 5 mm for stable low-voltage operation. |
| 6 (TEST) | Factory Test Input | Used during wafer sort and final test; must be connected to GND or VCC per manufacturer specification-floating prohibited. |
| 7 (SCL) | Serial Clock Input | Positive-edge clock for I²C protocol; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| 8 (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 |
|---|---|
| 1.8V Operation Support | Enables integration into modern ultra-low-power microcontroller subsystems without voltage translation circuitry. |
| 4-Byte Page Write Mode | Reduces I²C transaction count by 75% vs. sequential byte writes, lowering bus occupancy and host CPU overhead. |
| Self-Timed Write Cycle (≤5 ms) | Eliminates need for precise host timing control; host can poll ACK or insert fixed delay before next access. |
| Industrial Temperature Range | Validated operation from –40°C to +85°C ensures reliability in engine control units, HVAC controllers, and factory automation nodes. |
| Lead-Free/Halogen-Free Construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level (MSL) 1 rating for unlimited floor life. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
|
Use Scenario: Storing door lock actuator calibration offsets and seat position presets across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during MCU boot and runtime parameter updates. Use Value: Maintains user-specific settings without backup battery; leverages 1.8V compatibility with low-power CAN/LIN transceiver domains. |
Use Scenario: Recording sensor linearization coefficients and factory calibration timestamps in wireless temperature transmitters. IC Role / Device Role / Timing Role: Persistent parameter store written once at manufacturing and read on every power-up. Use Value: Ensures measurement accuracy traceability; 100-year retention eliminates field recalibration logistics. |
| Smart Energy Meter | Medical Diagnostic Handheld |
|
Use Scenario: Saving tariff schedule tables and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Secure, infrequently updated data archive accessed only during firmware upgrades or event triggers. Use Value: Withstands 1M write cycles for lifetime event logging; 400 kHz I²C avoids timing conflicts with metrology ADC sampling. |
Use Scenario: Storing FDA-mandated usage counters, calibration expiration dates, and last-test results in portable ECG analyzers. IC Role / Device Role / Timing Role: Tamper-resistant audit trail storage with guaranteed data integrity across battery swaps and sleep modes. Use Value: Meets IEC 62304 software lifecycle requirements via verified 100-year retention and automotive-grade reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 Kbit capacity, SPI interface, 2.5–5.5V supply; no 1.8V support; 5 MHz max clock. | Requires SPI-capable MCU; unsuitable for I²C-only designs or 1.8V systems. | Select only if higher density and SPI interface align with host architecture and voltage rail. |
| BR24G12-3MNUX | 1 Kbit, I²C, 1.6–5.5V supply, 1 MHz @ 1.8V; 1.5 million write cycles; 40-pin DFN package. | Higher speed and endurance; smaller 2.0 × 2.5 mm DFN footprint vs. TSSOP; different pinout. | Prefer for new designs needing faster writes or space-constrained layouts-requires PCB redesign. |
Compared with AT24C11-10TI-1.8, M95128-WMN6TP offers greater density but mandates SPI infrastructure and lacks 1.8V operation, while BR24G12-3MNUX matches voltage and interface but demands layout changes due to DFN packaging and delivers higher performance at premium cost.
Availability
AT24C11-10TI-1.8 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and smart energy metering applications requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AT24C11-10TI-1.8 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 emphasis on embedded control and secure connectivity.
The AT24C11-10TI-1.8 belongs to Microchip's legacy serial EEPROM product line, designed specifically for cost-sensitive, low-power, and automotive-qualified applications requiring robust nonvolatile storage in compact packages.
FAQ
What is the maximum I²C clock frequency supported by AT24C11-10TI-1.8 at 1.8V?
The AT24C11-10TI-1.8 supports up to 400 kHz I²C clock frequency when operating at 1.8V. This is explicitly specified in the AC Characteristics table under "fSCL" for the 1.8V column. Higher frequencies (up to 1 MHz) are only guaranteed at 2.5V, 2.7V, or 5.0V supply levels-not at 1.8V. Therefore, designs using AT24C11-10TI-1.8 in 1.8V systems must constrain SCL to ≤400 kHz for guaranteed timing compliance.
Does AT24C11-10TI-1.8 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C11-10TI-1.8 requires external pull-up resistors on both SDA and SCL lines because its SDA pin is open-drain and SCL is a CMOS input. The datasheet specifies typical values between 2.2 kΩ and 10 kΩ depending on bus capacitance and speed. For 400 kHz operation at 1.8V, a 4.7 kΩ pull-up to VCC is commonly used. Failure to install pull-ups will prevent proper I²C communication with AT24C11-10TI-1.8.
What is the function of the TEST pin on AT24C11-10TI-1.8, and how should it be connected?
The TEST pin on AT24C11-10TI-1.8 is a factory test input used during wafer probe and final test. Per the datasheet, it must be connected to either GND or VCC-never left floating. The recommended connection is GND for most applications unless otherwise specified by Microchip. Incorrect biasing (e.g., floating or high-impedance) may cause undefined behavior or failure to initialize correctly.
Can AT24C11-10TI-1.8 be used in place of AT24C01A or AT24C02 in existing designs?
No, AT24C11-10TI-1.8 is not a drop-in replacement for AT24C01A or AT24C02. Although all are I²C EEPROMs, AT24C11-10TI-1.8 has only 1 Kbit (128 × 8) capacity and a unique 7-bit addressing scheme, whereas AT24C01A/AT24C02 offer 1 Kbit/2 Kbit with different page sizes (8/16 bytes) and distinct timing parameters. Additionally, AT24C11-10TI-1.8 uses TEST and NC pins not present in those parts, requiring PCB and firmware validation before substitution.
Is AT24C11-10TI-1.8 qualified for automotive applications?
Yes, AT24C11-10TI-1.8 is explicitly qualified for automotive applications. The datasheet states "Automotive Grade, Extended Temperature and Lead-Free/Halogen-Free Devices Available" and specifies an operating temperature range of –40°C to +85°C (industrial grade, aligned with AEC-Q100 stress test categories for EEPROMs). It is commonly deployed in body control modules, lighting controllers, and infotainment subsystems where extended temperature and long-term reliability are required.
AT24C11-10TI-1.8 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:
- 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:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT24C11-10TI-1.8 FAQ
1.How can I place an order for AT24C11-10TI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C11-10TI-1.8 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 AT24C11-10TI-1.8 reliable?
The price and inventory of AT24C11-10TI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C11-10TI-1.8 is usually 5 days.
3.What payment methods are accepted for AT24C11-10TI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C11-10TI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C11-10TI-1.8?
AT24C11-10TI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C11-10TI-1.8 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 AT24C11-10TI-1.8?
For technical support, including AT24C11-10TI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C11-10TI-1.8 requirements.
6.How does Aetrix verify that AT24C11-10TI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT24C11-10TI-1.8 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 AT24C11-10TI-1.8 meets industry standards.
7.What is the process for return or replacement of AT24C11-10TI-1.8?
All AT24C11-10TI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C11-10TI-1.8, 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 AT24C11-10TI-1.8 part is unused and in its original packaging.
Return procedure for AT24C11-10TI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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