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Microchip Technology AT24C1024W-10SU-2.7
- Part No.:
- AT24C1024W-10SU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C1024W-10SU-2.7.pdf
- Description:
- IC EEPROM 1MBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,219
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Product details
Overview
AT24C1024W-10SU-2.7 from Microchip Technology (formerly Atmel) is a 1 Mbit (131,072 × 8) two-wire serial EEPROM IC optimized for low-voltage embedded systems. It operates from 2.7V to 5.5V, supports 400 kHz I²C communication at 2.7V, features hardware write protection via the WP pin, and delivers 100,000 write cycles per page with 40-year data retention. It is commonly used in industrial sensor calibration storage and firmware parameter backup.
For engineers reviewing the AT24C1024W-10SU-2.7 datasheet, AT24C1024W-10SU-2.7 pinout, AT24C1024W-10SU-2.7 application, or AT24C1024W-10SU-2.7 equivalent, key selection considerations include its 8-ball dBGA (8U8) package, 256-byte page write capability, Schmitt-triggered noise-immune inputs, A1 address pin for dual-device bus sharing, and -40°C to +85°C industrial temperature range.
Technical Context
The AT24C1024W-10SU-2.7 implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting both byte and 256-byte page writes. Its internal 17-bit addressing enables full 1 Mbit random access, with P0 bit embedded in the device address to select memory pages.
It uses an internal proprietary bias circuit on the A1 pin to default to logic low when floating-enabling hardware compatibility with AT24C128/256/512-and integrates Schmitt triggers and input filtering to suppress EMI in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 1,048,576 bits (131,072 × 8), sufficient for storing full configuration sets or firmware metadata in resource-constrained controllers. |
| Supply Voltage | 2.7V to 5.5V - enables direct interfacing with 3.3V and 5V microcontrollers without level shifting. |
| I²C Clock Rate | 400 kHz at 2.7V - ensures reliable timing margin under low-VCC conditions typical in battery-backed or energy-harvesting systems. |
| Write Cycle Time | 10 ms max - defines minimum inter-write interval; self-timed and non-blocking after STOP condition. |
| Endurance | 100,000 write cycles per page - supports frequent recalibration logging in industrial monitoring equipment. |
| Data Retention | 40 years at 85°C - guarantees long-term validity of stored calibration coefficients or security keys without refresh. |
| Operating Temp | -40°C to +85°C - qualified for use in automotive body control modules and outdoor IoT gateways. |
| Input Capacitance | SDA: 8 pF, SCL/A1: 6 pF - limits bus capacitance loading, enabling longer trace lengths or multi-drop configurations. |
Pinout & Package
AT24C1024W-10SU-2.7 is packaged in an 8-ball die Ball Grid Array (dBGA, package code 8U8), measuring 3.84 mm × 2.85 mm × 0.90 mm with 0.75 mm ball pitch and bottom-side pin 1 marking. This compact, leadless package supports high-density PCB layouts and automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Accepts 2.7–5.5V; powers internal logic and memory array; requires local 100 nF decoupling. |
| WP | Hardware write protect | Pulled high to VCC to disable all writes; internally pulled down if left unconnected - enables field-programmable lockout. |
| SCL | Serial clock input | Positive-edge sampled clock; open-drain compatible; must be externally pulled up (1.3 kΩ typical). |
| SDA | Bi-directional data I/O | Open-drain output / high-impedance input; shared across multiple I²C devices; requires same pull-up as SCL. |
| A1 | Device address input | Selects one of two possible addresses on shared bus; floats to logic low by internal bias - no external pull required. |
| GND | Ground reference | Return path for VCC and signal currents; must connect to system ground plane with low-inductance path. |
| NC | No-connect terminal | Not internally bonded; electrically isolated - must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| 256-byte page write mode | Reduces write transaction overhead by up to 255× vs. byte writes - critical for logging burst sensor data without CPU blocking. |
| Schmitt-triggered, filtered inputs | Rejects fast transients ≤100 ns and suppresses >10 mV noise - eliminates false START/STOP detection in motor-drive or power-supply proximity. |
| Hardware + software write protection | WP pin disables writes globally; software polling via ACK during tWR enables safe background write coordination. |
| Cascadable 2-device addressing | A1 pin allows two AT24C1024W-10SU-2.7 units on one I²C bus - simplifies design of redundant storage or multi-sensor node architectures. |
| 17-bit random addressing | Enables direct access to any byte within 1 Mbit space without sequential scanning - accelerates lookup of stored cryptographic keys or calibration offsets. |
Applications
| Industrial Sensor Calibration Storage | Embedded Firmware Parameter Backup |
|---|---|
Use Scenario: Storing factory-calibrated gain/offset coefficients and temperature compensation tables for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register providing persistent, byte-addressable storage accessible via I²C during boot or runtime recalibration. Use Value: Eliminates need for external calibration EEPROM or OTP fuses; retains values across 40+ years and 100k write cycles despite repeated field adjustments. | Use Scenario: Backing up user-modified boot parameters, network credentials, and operational thresholds in headless edge gateways running Linux-based firmware. IC Role / Device Role / Timing Role: Dedicated I²C-configurable NVM holding mutable system state that survives power loss and firmware updates. Use Value: Enables zero-touch provisioning and secure credential persistence without requiring flash partition management or wear-leveling software. |
| Automotive Body Control Module | Medical Device Configuration Memory |
Use Scenario: Recording seat position presets, mirror angles, and lighting profiles in automotive BCMs where EEPROM must operate reliably across -40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade serial EEPROM interfaced directly to 3.3V MCU I²C peripheral; accessed during wake-up sequence. Use Value: Meets AEC-Q100 stress requirements via qualified packaging (8U8 dBGA) and 40-year retention - avoids costly qualification of alternative memory. | Use Scenario: Storing FDA-mandated device-specific calibration constants, usage counters, and audit logs in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Tamper-resistant, long-life NVM with hardware write protection (WP tied to VCC during normal operation) to prevent accidental overwrite. Use Value: Supports regulatory compliance through guaranteed 100k-cycle endurance and 40-year data integrity - validated for safety-critical configuration storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip AT24C1024-10UI-2.7 | Same die, identical electrical specs, but in 8-ball dBGA (8U8) with industrial temp range - differs only in marking and tape/reel packaging. | No functional difference; suitable for identical applications including medical and automotive. | Select when sourcing flexibility or alternate reel coding is required; fully interchangeable in layout and firmware. |
| ON Semiconductor CAT24C102 | 1 Mbit I²C EEPROM with 400 kHz @ 2.7V, but rated for 1M write cycles and 100-year retention; uses 8-lead SOIC (8S2) or TSSOP packages. | Better endurance and retention, but larger footprint and no dBGA option - less suitable for ultra-compact designs. | Choose for extended lifecycle requirements where board area permits SOIC; not drop-in due to package mismatch. |
Compared with AT24C1024W-10SU-2.7, AT24C1024-10UI-2.7 offers identical functionality in the same 8U8 package, while CAT24C102 trades dBGA miniaturization for higher endurance and legacy SOIC compatibility - making the former ideal for footprint-constrained industrial designs and the latter better for long-life, board-area-flexible deployments.
Availability
AT24C1024W-10SU-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded firmware parameter backup, and automotive body control modules requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for AT24C1024W-10SU-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 memory solutions, with a focus on reliability, longevity, and embedded system integration.
The AT24C1024 series belongs to Microchip's serial EEPROM product line, designed specifically for robust, low-power, I²C-based nonvolatile storage in industrial, automotive, and medical applications demanding guaranteed data integrity over decades.
FAQ
What is the package type of AT24C1024W-10SU-2.7?
AT24C1024W-10SU-2.7 uses an 8-ball die Ball Grid Array (dBGA) package, designated as 8U8, with dimensions 3.84 mm × 2.85 mm × 0.90 mm and 0.75 mm ball pitch. This compact, surface-mount package supports fine-pitch routing and automated assembly in space-constrained applications such as portable medical devices and automotive ECUs. The AT24C1024W-10SU-2.7 package includes a bottom-side pin 1 marker for orientation verification during placement.
Does AT24C1024W-10SU-2.7 support 1 MHz I²C operation?
No, AT24C1024W-10SU-2.7 supports up to 400 kHz I²C clock rate at 2.7V supply - the maximum specified for low-voltage operation. While the datasheet notes 1 MHz capability at 5V, the -2.7 suffix confirms this variant is characterized and guaranteed only for 2.7V–5.5V operation with 400 kHz timing compliance. Using 1 MHz may violate tLOW/tHIGH specifications and cause communication failures. The AT24C1024W-10SU-2.7 must be configured for 400 kHz mode in host firmware to ensure reliable operation across its full voltage range.
How does the WP pin function on AT24C1024W-10SU-2.7?
The WP (Write Protect) pin on AT24C1024W-10SU-2.7 provides hardware-level inhibition of all write operations when driven high to VCC. When tied to GND or left floating, writes are enabled - the pin has an internal pull-down. This dual-mode behavior allows both permanent lockout (via hardwired VCC) and dynamic protection (via MCU-controlled GPIO). During active writes, the AT24C1024W-10SU-2.7 ignores WP state changes; protection takes effect only before START condition. This makes AT24C1024W-10SU-2.7 suitable for safety-critical storage where accidental overwrites must be physically prevented.
Can multiple AT24C1024W-10SU-2.7 devices share the same I²C bus?
Yes, up to two AT24C1024W-10SU-2.7 devices can share a single I²C bus using the A1 address pin. When A1 is hardwired to VCC or GND, it selects one of two device addresses (1010000x or 1010001x); when left unconnected, A1 defaults to logic low via internal bias, assigning the base address. This cascadable addressing eliminates need for bus multiplexers in multi-sensor nodes or modular systems. Each AT24C1024W-10SU-2.7 retains independent memory space, and the host MCU selects target device via the 7-bit address field in the I²C START sequence.
What is the maximum page write size for AT24C1024W-10SU-2.7?
The AT24C1024W-10SU-2.7 supports a maximum page write size of 256 bytes, aligned to internal 256-byte boundaries. Partial page writes are permitted - sending fewer than 256 bytes before STOP terminates the transaction cleanly. Exceeding 256 bytes causes address rollover within the same page, overwriting earlier data. This 256-byte limit directly maps to its 512-page organization (131,072 ÷ 256 = 512), and the AT24C1024W-10SU-2.7 requires no external address latching or page management logic - the internal counter handles incrementing automatically during multi-byte transmission.
AT24C1024W-10SU-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 10ms
- 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
AT24C1024W-10SU-2.7 FAQ
1.How can I place an order for AT24C1024W-10SU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C1024W-10SU-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 AT24C1024W-10SU-2.7 reliable?
The price and inventory of AT24C1024W-10SU-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 AT24C1024W-10SU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C1024W-10SU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C1024W-10SU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C1024W-10SU-2.7?
AT24C1024W-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C1024W-10SU-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 AT24C1024W-10SU-2.7?
For technical support, including AT24C1024W-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C1024W-10SU-2.7 requirements.
6.How does Aetrix verify that AT24C1024W-10SU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C1024W-10SU-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 AT24C1024W-10SU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C1024W-10SU-2.7?
All AT24C1024W-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C1024W-10SU-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 AT24C1024W-10SU-2.7 part is unused and in its original packaging.
Return procedure for AT24C1024W-10SU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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