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Microchip Technology AT24C512N-10SI-2.7
- Part No.:
- AT24C512N-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C512N-10SI-2.7.pdf
- Description:
- IC EEPROM 512KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,764
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Product details
Overview
AT24C512N-10SI-2.7 from Microchip Technology (formerly Atmel) is a 512 Kbit (65,536 × 8) two-wire serial EEPROM operating from 2.7V to 5.5V, featuring 128-byte page write capability, hardware/software write protection via WP pin, and 100,000 write cycles endurance. It supports up to 4 devices on a shared I²C bus and is used in industrial control systems for nonvolatile parameter storage.
For engineers reviewing the AT24C512N-10SI-2.7 datasheet, AT24C512N-10SI-2.7 pinout, AT24C512N-10SI-2.7 application, or AT24C512N-10SI-2.7 equivalent, key selection factors include its JEDEC SOIC-8 package, 400 kHz I²C speed at 2.7V, 40-year data retention, Schmitt-triggered inputs for noise immunity, and support for partial page writes in embedded firmware update and calibration storage designs.
Technical Context
The AT24C512N-10SI-2.7 implements a standard I²C-compatible 2-wire interface with bidirectional open-drain SDA and edge-triggered SCL, supporting clock frequencies up to 400 kHz at 2.7V. Its internal address counter enables current-address, random-address, and sequential read modes without external addressing logic.
Memory is organized into 512 pages of 128 bytes each, with automatic address roll-over within pages during page write. The WP pin provides hardware-level write inhibition when tied to VCC, while software write protection is achieved by toggling WP before write initiation - both mechanisms enforce data integrity in power-critical environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (65,536 × 8), sufficient for storing full device configuration tables or multi-channel sensor calibration data |
| Supply Voltage Range | 2.7V to 5.5V - compatible with 3.3V and 5V microcontroller I/O domains without level shifting |
| I²C Clock Frequency | 400 kHz max at 2.7V - enables fast firmware parameter loading while maintaining noise margin in industrial wiring |
| Page Write Size | 128 bytes - allows efficient bulk updates (e.g., logging buffers or OTA patch segments) without excessive transaction overhead |
| Write Endurance | 100,000 cycles - supports daily recalibration or event logging over >27 years at 10 writes/day |
| Data Retention | 40 years at +85°C - ensures long-term reliability in unattended infrastructure monitoring nodes |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade operation in PLCs, motor drives, and HVAC controllers |
| Package | 8-lead JEDEC SOIC (8S1), 0.150" wide - industry-standard footprint enabling drop-in replacement and high-volume PCB assembly |
Pinout & Package
AT24C512N-10SI-2.7 uses an 8-lead JEDEC SOIC (8S1) package, 5.0 mm × 6.2 mm body, 1.27 mm lead pitch, gull-wing leads, RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired low/high or left floating (internally pulled down); selects one of four possible addresses on shared I²C bus |
| A1 | Device Address Input | Same function as A0; combined with A0, enables up to four AT24C512N-10SI-2.7 devices on same bus |
| NC | No Connect | Unbonded die pad; must remain unconnected on PCB to avoid parasitic coupling or latch-up risk |
| GND | Ground Reference | Return path for all internal circuitry and I²C pull-up currents; requires low-impedance connection to system ground plane |
| VCC | Power Supply | 2.7V–5.5V supply input; bypass capacitor (0.1 µF ceramic) required within 5 mm for stable I²C timing and write-cycle completion |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; floating defaults to GND (write enabled) if board coupling <3 pF |
| SCL | Serial Clock Input | Positive-edge sampled clock; requires external pull-up; determines maximum I²C throughput and noise immunity threshold |
| SDA | Serial Data I/O | Open-drain bidirectional line; must be wire-ORed with other I²C devices using shared pull-up resistor (1.3 kΩ typical at 2.7V) |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable I²C communication in electrically noisy industrial environments (e.g., near motor drives or relay banks) |
| 128-byte page write mode | Reduces firmware update time by 90% vs. byte-write for 128-byte blocks - critical for field-upgradable embedded systems |
| Self-timed 5 ms write cycle | Eliminates need for external write-cycle delay polling; host MCU can perform other tasks during nonvolatile commit |
| Hardware + software write protection | Prevents accidental corruption during brown-out, reset, or firmware bugs - essential for safety-critical calibration data |
| Automotive-grade temperature range | Validated operation from -40°C to +85°C ensures reliability in under-hood or factory-floor deployments |
| Lead-free/halogen-free packaging | Complies with IPC/JEDEC J-STD-020 moisture sensitivity level 3 (MSL3), simplifying manufacturing and environmental compliance |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in manufacturing lines. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via I²C during boot and runtime reconfiguration. Use Value: Enables field-serviceable parameter changes without firmware reflashing; 40-year retention guarantees data survival across equipment lifecycle. | Use Scenario: Holding factory-calibrated sensor offsets and gain coefficients for blood glucose meters and infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for FDA-required traceability data, protected by WP pin during normal operation. Use Value: Meets IEC 62304 Class C software requirements for persistent data integrity; 100K write cycles support full recalibration history. |
| Smart Energy Meter Firmware Patch Log | Automotive Body Control Module Settings |
Use Scenario: Recording OTA firmware patch metadata (version, timestamp, CRC) and rollback pointers in utility-grade smart meters. IC Role / Device Role / Timing Role: Atomic write-capable log buffer with page-aligned updates to prevent partial-write corruption during power loss. Use Value: Ensures safe firmware recovery after interrupted updates; 128-byte page writes minimize flash wear on primary MCU storage. | Use Scenario: Storing user preferences (seat position, mirror angle, lighting profiles) and diagnostic trouble code history in automotive BCMs. IC Role / Device Role / Timing Role: Low-power, high-reliability shadow memory synchronized with CAN bus commands during ignition-off state. Use Value: Maintains settings across battery disconnects; 2.7V operation supports direct connection to vehicle's 3.3V domain without regulator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24512-RMN6TP | Same 512 Kbit size, 2.5–5.5V supply, but rated for 1 MHz I²C at 5V only; no 1.8V option | Higher-speed operation in 5V systems; lacks 2.7V-specific AC specs and automotive qualification | Select when 1 MHz I²C is required and ambient temperature stays ≤+70°C |
| ON Semiconductor CAT24C512WI-GT3 | Identical 512 Kbit, 2.7–5.5V, 400 kHz @ 2.7V, JEDEC SOIC-8, and -40°C to +85°C rating; pinout and timing fully aligned | No functional deviation; validated for same industrial and automotive use cases | Drop-in alternative with identical footprint, timing, and reliability specs - suitable for dual-sourcing |
Compared with AT24C512N-10SI-2.7, the M24512-RMN6TP offers faster I²C but narrower voltage and temperature margins, while the CAT24C512WI-GT3 delivers identical electrical and mechanical behavior - making it ideal for supply-chain resilience without design revision.
Availability
AT24C512N-10SI-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics equipment, smart energy meters, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for AT24C512N-10SI-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 nonvolatile memory solutions, with broad industrial and automotive qualifications.
The AT24Cxx family was designed specifically for robust, low-power serial data storage in resource-constrained embedded systems - emphasizing noise immunity, long-term data integrity, and seamless integration with 8/16-bit MCUs via standard I²C.
FAQ
What is the maximum I²C clock frequency supported by AT24C512N-10SI-2.7 at 2.7V?
The AT24C512N-10SI-2.7 supports up to 400 kHz I²C clock frequency when operated at 2.7V, as specified in its AC characteristics table. This value is validated across the full -40°C to +85°C temperature range and accounts for input rise/fall times and bus capacitance limits. Exceeding this frequency may result in timing violations or ACK failures during write operations.
Does AT24C512N-10SI-2.7 support partial page writes?
Yes, AT24C512N-10SI-2.7 supports partial page writes: up to 128 bytes can be written in a single page write transaction, and fewer than 128 bytes may be sent - the internal address counter increments automatically. This avoids unnecessary dummy writes and reduces firmware overhead when updating small configuration subsets.
How does the WP pin function on AT24C512N-10SI-2.7?
On AT24C512N-10SI-2.7, the WP pin is an active-high hardware write protect. When tied to VCC, all write operations (byte and page) are inhibited. If left floating, it is internally pulled down to GND (enabling writes) only if board capacitive coupling to VCC is below 3 pF; otherwise, Atmel recommends explicit grounding. Switching WP to VCC before a write also enables software-level protection.
What package type is used by AT24C512N-10SI-2.7?
AT24C512N-10SI-2.7 uses an 8-lead JEDEC SOIC package (designated 8S1), measuring 5.0 mm × 6.2 mm with 1.27 mm lead pitch and gull-wing leads. This is distinct from EIAJ SOIC (8S2) and TSSOP (8A2) variants - the "SI" suffix in the part number explicitly denotes JEDEC SOIC.
Is AT24C512N-10SI-2.7 qualified for automotive applications?
AT24C512N-10SI-2.7 is rated for industrial temperature (-40°C to +85°C) and labeled "Automotive Grade" in its features list, indicating qualification per AEC-Q100 stress test requirements. However, it is not officially AEC-Q100 certified - for production automotive ECUs, users should verify certification status directly with Microchip and consult latest qualification reports before deployment.
AT24C512N-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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
AT24C512N-10SI-2.7 FAQ
1.How can I place an order for AT24C512N-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512N-10SI-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 AT24C512N-10SI-2.7 reliable?
The price and inventory of AT24C512N-10SI-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 AT24C512N-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C512N-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512N-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512N-10SI-2.7?
AT24C512N-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512N-10SI-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 AT24C512N-10SI-2.7?
For technical support, including AT24C512N-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512N-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C512N-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C512N-10SI-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 AT24C512N-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C512N-10SI-2.7?
All AT24C512N-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512N-10SI-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 AT24C512N-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C512N-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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