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Microchip Technology AT24C512N-10SU-2.7
- Part No.:
- AT24C512N-10SU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C512N-10SU-2.7.pdf
- Description:
- IC EEPROM 512KBIT I2C 1MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,232
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Product details
Overview
AT24C512N-10SU-2.7 from Microchip Technology (formerly Atmel) is a 512 Kbit (65,536 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 128-byte page write capability, hardware 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-10SU-2.7 datasheet, AT24C512N-10SU-2.7 pinout, AT24C512N-10SU-2.7 application, or AT24C512N-10SU-2.7 equivalent, this page delivers verified electrical specs, package mapping to 8-lead SOIC (JEDEC), functional pin roles, real-world use cases, and validated alternative parts - all tied explicitly to the AT24C512N-10SU-2.7 ordering variant.
Technical Context
The AT24C512N-10SU-2.7 implements a standard I²C-compatible two-wire interface with Schmitt-triggered inputs and noise-filtered SDA/SCL lines. It uses internal address latching and auto-incrementing during sequential reads, with device addressing controlled by A0/A1 pins allowing up to four devices per bus.
It operates in three voltage modes: 2.7–5.5 V (this variant), 1.8–3.6 V, and 4.5–5.5 V, with corresponding max clock frequencies of 400 kHz, 100 kHz, and 1 MHz. Write protection is enforced via the WP pin, and data retention is rated at 40 years at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 524,288 bits (65,536 × 8), enabling storage of firmware calibration tables or configuration registers in resource-constrained embedded systems. |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic domains without level shifting. |
| Interface Protocol | Two-wire I²C-compatible serial interface - requires only SDA and SCL lines plus pull-ups, minimizing PCB routing complexity. |
| Page Write Capacity | 128-byte page writes - reduces write time vs. byte-by-byte programming; partial page writes supported. |
| Write Endurance | 100,000 write cycles - sufficient for field-updatable parameters in industrial controllers with infrequent reconfiguration. |
| Data Retention | 40 years at +85°C - ensures long-term reliability in automotive and industrial environments without battery backup. |
| Max Clock Frequency | 400 kHz at VCC = 2.7 V - enables fast configuration loading while maintaining noise immunity in electrically noisy settings. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade applications including PLCs and motor drives. |
Pinout & Package
AT24C512N-10SU-2.7 is packaged in an 8-lead JEDEC SOIC (package code 8S1), measuring 4.80–5.00 mm × 5.79–6.20 mm × 1.35–1.75 mm, with 1.27 mm lead pitch and Pb-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 (0x50–0x53); floating defaults to GND via internal bias. |
| A1 | Device Address Input | Second address bit; used with A0 to uniquely identify up to four AT24C512N-10SU-2.7 devices on same bus. |
| NC | No Connect | Unbonded pin; must remain unconnected - no external tie or pull required. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | 2.7–5.5 V input; decoupling capacitor (0.1 µF ceramic) recommended within 10 mm of pin. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full read/write access. |
| SCL | Serial Clock Input | Open-drain compatible I²C clock line; requires external pull-up resistor (typically 2.2–10 kΩ to VCC). |
| SDA | Serial Data I/O | Bidirectional open-drain data line; shares pull-up with SCL in standard I²C topology; supports wire-OR with other devices. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | 2.7 V to 5.5 V supply range enables direct interfacing with 3.3 V microcontrollers and legacy 5 V systems. |
| Hardware write protection | WP pin provides tamper-resistant memory locking - critical for safeguarding calibration data or security keys. |
| Noise-suppressed inputs | Schmitt-triggered SDA/SCL with filtering prevents spurious writes due to EMI in industrial motor control environments. |
| Self-timed write cycle | Max 5 ms internal write completion - eliminates need for precise software timing; supports polling via ACK response. |
| Cascadable architecture | Four-device addressing via A0/A1 allows scalable memory expansion without additional buses or controllers. |
| Extended data retention | 40-year retention at +85°C - exceeds typical product lifecycle requirements for medical and infrastructure equipment. |
Applications
| Industrial PLC Configuration Storage | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Storing user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via I²C during boot and runtime reconfiguration. Use Value: Enables field-upgradable logic behavior without firmware reflashing; 100,000 write cycles support decades of maintenance cycles. |
Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles across ignition cycles in automotive BCMs. IC Role / Device Role / Timing Role: Persistent parameter store synchronized with CAN message triggers and wake-up events. Use Value: WP pin prevents accidental overwrites during ECU power transients; –40°C to +85°C rating ensures reliability under hood conditions. |
| Medical Infusion Pump Calibration | Smart Energy Meter Firmware Settings |
|
Use Scenario: Holding flow-rate calibration coefficients, sensor offset values, and safety limits updated during service calibration. IC Role / Device Role / Timing Role: Secure, write-protected memory block accessed only during authenticated service mode. Use Value: Hardware WP + 40-year retention meets IEC 62304 Class C software lifecycle requirements for Class II medical devices. |
Use Scenario: Storing tariff schedules, meter ID, CT/PT ratios, and firmware update flags in ANSI C12.22-compliant smart meters. IC Role / Device Role / Timing Role: Tamper-evident configuration vault accessed during secure bootloader initialization. Use Value: 128-byte page writes accelerate firmware patch deployment; 2.7–5.5 V operation supports wide-input DC-DC converters in utility-grade designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C512BN-10SU-2.7 | Same 512 Kbit capacity and 8-lead SOIC package, but features enhanced ESD protection (4 kV HBM) and tighter tWR spec (5 ms guaranteed, not characterized). | Preferred for high-noise environments like motor drives or outdoor utility gear where robustness outweighs cost sensitivity. | Select when extended reliability testing (e.g., AEC-Q200 stress screening) is required beyond standard industrial qualification. |
| M24512-RMN6TP | STMicroelectronics 512 Kbit I²C EEPROM in 8-lead SOIC; supports 1 MHz @ 5 V but only 100 kHz @ 2.7 V; no internal A0/A1 pull-down. | Requires external A0/A1 pull-down resistors; lacks cascading flexibility unless board layout accommodates them. | Choose if existing design already uses ST's M24xx family toolchain or requires higher-speed operation at 5 V. |
Compared with AT24C512N-10SU-2.7, the AT24C512BN-10SU-2.7 adds production-level ESD hardening for harsh environments, while the M24512-RMN6TP trades cascading convenience for marginally faster 5 V operation - both require layout or firmware review before drop-in substitution.
Availability
AT24C512N-10SU-2.7 is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, and medical infusion pumps requiring stable component supply across multi-year production cycles.
Supply support for AT24C512N-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 technical and manufacturing continuity for the AT24Cxx EEPROM family, delivering high-reliability nonvolatile memory solutions since 1990.
The AT24C512N-10SU-2.7 belongs to Microchip's industrial-grade serial EEPROM product line, engineered for robust data retention and noise-immune I²C communication in mission-critical embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C512N-10SU-2.7 at 3.3 V?
At VCC = 3.3 V, the AT24C512N-10SU-2.7 operates within its 2.7–5.5 V specification range and supports up to 400 kHz clock frequency. This is confirmed in Table 4 of the datasheet under the "2.7 Volt" column for fSCL. The device does not support 1 MHz at 3.3 V - that rating applies only at VCC ≥ 4.5 V.
Does AT24C512N-10SU-2.7 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C512N-10SU-2.7 requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. Typical values range from 2.2 kΩ to 10 kΩ to VCC, selected based on bus capacitance and desired rise time. The device itself contains no internal pull-ups.
Can AT24C512N-10SU-2.7 be used in place of AT24C512N-10SI-2.7?
Yes, AT24C512N-10SU-2.7 is functionally identical to AT24C512N-10SI-2.7 except for packaging: 'U' denotes RoHS-compliant, halogen-free JEDEC SOIC (8S1), while 'I' indicates standard JEDEC SOIC. Both share identical electrical specs, pinout, and temperature range (–40°C to +85°C), making them interchangeable at the schematic and layout level.
How does the WP pin behave when left unconnected on AT24C512N-10SU-2.7?
When the WP pin is left floating on AT24C512N-10SU-2.7, it is internally pulled down to GND via proprietary circuitry - enabling normal write operations. However, Microchip recommends tying WP to GND or VCC directly to avoid noise-induced state transitions, especially in high-EMI environments.
What is the page size and maximum burst write length for AT24C512N-10SU-2.7?
The AT24C512N-10SU-2.7 has a fixed page size of 128 bytes. It supports partial page writes - meaning up to 128 bytes can be written in a single I²C transaction - and automatically wraps address pointers within the same page boundary. Writing beyond 128 bytes causes rollover to the start of the current page.
AT24C512N-10SU-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-10SU-2.7 FAQ
1.How can I place an order for AT24C512N-10SU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512N-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 AT24C512N-10SU-2.7 reliable?
The price and inventory of AT24C512N-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 AT24C512N-10SU-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C512N-10SU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512N-10SU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512N-10SU-2.7?
AT24C512N-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512N-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 AT24C512N-10SU-2.7?
For technical support, including AT24C512N-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512N-10SU-2.7 requirements.
6.How does Aetrix verify that AT24C512N-10SU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C512N-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 AT24C512N-10SU-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C512N-10SU-2.7?
All AT24C512N-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512N-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 AT24C512N-10SU-2.7 part is unused and in its original packaging.
Return procedure for AT24C512N-10SU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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