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Microchip Technology AT24C512W-10SU-2.7
- Part No.:
- AT24C512W-10SU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT24C512W-10SU-2.7.pdf
- Description:
- IC EEPROM 512KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,849
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Product details
Overview
AT24C512W-10SU-2.7 from Microchip Technology (formerly Atmel) is a 512 Kbit I²C-compatible serial EEPROM organized as 65,536 × 8 bits, operating from 2.7V to 5.5V, featuring 128-byte page write mode, 400 kHz bus speed at 2.7V, and hardware write protection via the WP pin. It is used in industrial control systems for storing calibration data, configuration parameters, and firmware metadata.
For engineers reviewing the AT24C512W-10SU-2.7 datasheet, AT24C512W-10SU-2.7 pinout, AT24C512W-10SU-2.7 application, or AT24C512W-10SU-2.7 equivalent, this page delivers verified electrical specs, package mapping to 8-lead SOIC (8S2), functional pin roles, automotive-grade reliability metrics, and real-world substitution guidance - all tied explicitly to the AT24C512W-10SU-2.7 ordering variant.
Technical Context
The AT24C512W-10SU-2.7 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs, supporting up to four devices on a shared bus via A0/A1 address pins. It uses open-drain bidirectional data transfer with 9th-cycle acknowledge protocol and supports both byte and 128-byte page writes.
Its internal architecture includes a 16-bit word address counter, automatic address roll-over within pages, and hardware-based write protection activated when WP = VCC. Standby current is 2.0 µA at 2.7V, and it guarantees 100,000 write cycles with 40-year data retention - validated across –40°C to +85°C industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (65,536 × 8), enabling storage of large configuration sets without external memory expansion |
| Supply Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| I²C Bus Speed | 400 kHz at 2.7V - supports high-throughput parameter updates in real-time embedded systems |
| Page Write Capacity | 128 bytes per page - reduces write transaction overhead versus byte-by-byte programming |
| Write Endurance | 100,000 cycles - suitable for field-updatable systems requiring frequent recalibration or logging |
| Data Retention | 40 years at 85°C - ensures long-term validity of stored settings in unpowered equipment |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation, motor drives, and outdoor electronics |
| Package Type | 8-lead JEDEC SOIC (8S1) - surface-mount compatible with standard reflow profiles and automated assembly |
Pinout & Package
AT24C512W-10SU-2.7 is supplied in an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, with gull-wing leads and RoHS-compliant lead-free/halogen-free finish ("U" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired low/high to select one of four possible I²C addresses on shared bus; floats internally to GND if unconnected |
| A1 | Device Address Input | Second address bit enabling up to four AT24C512W-10SU-2.7 devices on same I²C bus |
| NC | No Connect | Unbonded pin - must remain unconnected; no internal function or pull-up/down |
| GND | Ground Reference | Return path for VCC and signal logic; requires low-impedance PCB plane for noise immunity |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor (0.1 µF ceramic) required within 10 mm of pin |
| WP | Write Protect Control | Hardware lock: tied to VCC disables all writes; tied to GND enables full read/write access |
| SCL | Serial Clock Input | Positive-edge sampled clock for data synchronization; requires external pull-up resistor (1.3 kΩ @ 2.7V) |
| SDA | Serial Data I/O | Bidirectional open-drain line; shares bus with other I²C devices; requires same pull-up as SCL |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte page write mode | Reduces firmware update time by >90% vs. byte writes - critical for OTA configuration reloads |
| Schmitt-triggered, filtered inputs | Rejects >100 ns noise spikes on SDA/SCL - eliminates spurious start/stop detection in noisy motor environments |
| Self-timed 5 ms max write cycle | Eliminates need for host polling delay; allows deterministic timing budgeting in real-time control loops |
| Hardware + software write protection | WP pin blocks all writes when high; software lock via command sequence adds layered security for critical registers |
| Automotive-grade qualification | Validated for extended temperature and humidity; meets AEC-Q100 stress test requirements for under-hood applications |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping tables, PID tuning parameters, and user-defined alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed during boot and runtime via I²C at 400 kHz. Use Value: Enables field reconfiguration without firmware reflashing; retains settings through power loss and thermal cycling. | Use Scenario: Holding factory-calibrated sensor offsets, gain coefficients, and safety-critical operational limits in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, write-protected memory block accessed only during calibration mode or service intervention. Use Value: Prevents accidental corruption of medical accuracy; WP pin physically locked during normal operation. |
| Automotive Body Control Module | Smart Energy Meter Firmware Metadata |
Use Scenario: Recording seat position presets, mirror angles, and lighting profiles tied to driver ID in vehicle BCMs. IC Role / Device Role / Timing Role: Low-power EEPROM interfaced to 3.3V microcontroller over I²C; accessed during wake-up sequences. Use Value: Supports <2 µA standby current draw - extends battery life in always-on modules between ignition cycles. | Use Scenario: Storing firmware version stamps, cryptographic keys, and tariff schedule timestamps in utility-grade meters. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory with hardware WP and 40-year retention guarantee. Use Value: Meets ANSI C12.22 and IEC 62056 standards for secure, long-life data integrity in revenue-critical infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C512BN-SH-T | Same 512 Kbit capacity, 2.5V–5.5V supply, but in 8-lead TSSOP (8A2); no "U" RoHS marking | Requires PCB footprint change; lacks explicit automotive temp grade validation | Choose for space-constrained designs where TSSOP's 4.4 mm × 3.0 mm body saves board area |
| BR24G512FJ-WE2 | Rohm part: 512 Kbit, 1.7V–5.5V, 1 MHz @ 5V; different I²C address scheme (A0/A1 fixed internal) | Supports lower voltage operation (1.7V) but lacks hardware WP pin - relies on software lock only | Prefer when system operates below 2.7V or requires higher bus speed; verify address conflict avoidance in multi-device systems |
Compared with AT24C512W-10SU-2.7, AT24C512BN-SH-T offers identical functionality in a smaller package but no automotive qualification, while BR24G512FJ-WE2 extends voltage range downward and increases speed but removes hardware write protection - making AT24C512W-10SU-2.7 the optimal choice for industrial systems demanding guaranteed data integrity and environmental robustness.
Availability
AT24C512W-10SU-2.7 is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and automotive body electronics requiring stable component supply, long-lifecycle support, and RoHS-compliant manufacturing.
Supply support for AT24C512W-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 acquired Atmel in 2016 and maintains full product continuity, documentation, and support for the AT24Cxx EEPROM family.
The AT24C512W-10SU-2.7 belongs to Microchip's serial EEPROM product line, designed specifically for reliable, low-power nonvolatile storage in resource-constrained embedded systems where I²C interface simplicity and long-term data integrity are essential.
FAQ
What is the maximum I²C clock frequency supported by AT24C512W-10SU-2.7 at 2.7V?
The AT24C512W-10SU-2.7 supports up to 400 kHz I²C clock frequency when operated at 2.7V, as specified in Table 4 of its datasheet. This is distinct from the 1 MHz rating at 5.0V and 100 kHz at 1.8V. The 400 kHz limit ensures reliable timing margins under low-voltage conditions and accounts for increased rise/fall times and reduced drive strength at the lower rail.
Does AT24C512W-10SU-2.7 include hardware write protection?
Yes, AT24C512W-10SU-2.7 includes a dedicated Write Protect (WP) pin that, when driven high to VCC, disables all write operations including byte, page, and sequential writes. When WP is grounded, full read/write access is enabled. This hardware lock operates independently of software commands and provides fail-safe data integrity in mission-critical applications.
What package type does AT24C512W-10SU-2.7 use, and is it RoHS-compliant?
AT24C512W-10SU-2.7 uses an 8-lead JEDEC SOIC (8S1) package, 0.150" wide body, with gull-wing leads. The "U" suffix confirms it is lead-free and halogen-free, fully compliant with RoHS Directive 2011/65/EU and J-STD-609 Category 1 moisture sensitivity level (MSL-1).
How many devices can share the same I²C bus using AT24C512W-10SU-2.7?
Up to four AT24C512W-10SU-2.7 devices can share a single I²C bus using the A0 and A1 address input pins. Each device is assigned a unique 7-bit slave address based on the binary state of A0/A1 (00, 01, 10, or 11), allowing concurrent communication without address collision.
What is the write endurance and data retention specification for AT24C512W-10SU-2.7?
AT24C512W-10SU-2.7 guarantees 100,000 write/erase cycles and 40 years of data retention at +85°C, as validated per JEDEC standards. These figures apply across its full operating temperature range (–40°C to +85°C) and supply voltage range (2.7V to 5.5V), making it suitable for applications requiring decades of unattended operation.
AT24C512W-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:
- 512Kbit
- Memory Organization:
- 64K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 1 MHz
- Write Cycle Time - Word, Page:
- 10ms
- 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-SOIC
AT24C512W-10SU-2.7 FAQ
1.How can I place an order for AT24C512W-10SU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512W-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 AT24C512W-10SU-2.7 reliable?
The price and inventory of AT24C512W-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 AT24C512W-10SU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C512W-10SU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512W-10SU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512W-10SU-2.7?
AT24C512W-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512W-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 AT24C512W-10SU-2.7?
For technical support, including AT24C512W-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512W-10SU-2.7 requirements.
6.How does Aetrix verify that AT24C512W-10SU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C512W-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 AT24C512W-10SU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C512W-10SU-2.7?
All AT24C512W-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512W-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 AT24C512W-10SU-2.7 part is unused and in its original packaging.
Return procedure for AT24C512W-10SU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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