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Microchip Technology AT24C512C1-10CI-2.7
- Part No.:
- AT24C512C1-10CI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TDFN
- Datasheet:
-
AT24C512C1-10CI-2.7.pdf
- Description:
- IC EEPROM 512KBIT I2C 1MHZ 8LAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
AT24C512C1-10CI-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, supporting up to 400 kHz bus speed at 2.7V, with hardware write protection via WP pin and 128-byte page write capability. It is used in industrial control systems for parameter storage, calibration data retention, and firmware configuration backup.
For engineers reviewing the AT24C512C1-10CI-2.7 datasheet, AT24C512C1-10CI-2.7 pinout, AT24C512C1-10CI-2.7 application, or AT24C512C1-10CI-2.7 equivalent, key selection considerations include industrial temperature range (–40°C to +85°C), 2.7V–5.5V supply compatibility, 128-byte page write mode, hardware/software write protection, and 8-pin Leadless Array (LAP) package footprint.
Technical Context
The AT24C512C1-10CI-2.7 implements a standard two-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs, supporting bidirectional data transfer and ACK/NACK handshaking. Its internal address counter enables current-address, random-address, and sequential read modes without external address latching.
It uses hardwired A0/A1 pins for device addressing (up to four devices per bus), with internal pull-down biasing when floating. The WP pin provides hardware-level write inhibition when driven high, while software write protection is achieved by toggling WP before initiating a write sequence.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (65,536 × 8 bits), enabling storage of large configuration tables or firmware metadata without external address decoding logic. |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage system integration with 3.3V microcontrollers and legacy 5V peripherals. |
| I²C Bus Speed | Up to 400 kHz at 2.7V - delivers 40 KB/s effective write throughput in page mode, suitable for rapid field-updatable parameter sets. |
| Page Write Size | 128 bytes per page - reduces write cycle overhead versus byte-write; partial page writes are supported without erasing adjacent bytes. |
| Data Retention | 40 years at +85°C - ensures long-term reliability for industrial equipment deployed in unattended environments. |
| Endurance | 100,000 write cycles - sufficient for daily calibration logging over 27 years at one write per day. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade operation in motor drives, PLCs, and outdoor metering hardware. |
Pinout & Package
AT24C512C1-10CI-2.7 is packaged in an 8-pin Leadless Array (LAP), 0.300" wide, surface-mount package with exposed pad (8C1 designation). This compact, lead-free package supports automated reflow assembly and offers low thermal resistance for stable operation in thermally constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired low/high to select one of four possible I²C addresses (0x50–0x53); floats internally to logic low if unconnected. |
| A1 | Device Address Input | Second address bit; used with A0 to uniquely identify up to four AT24C512 devices on shared I²C bus. |
| NC | No Connect | Internally unused terminal; must remain unconnected per design - no routing or grounding allowed. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to system ground plane. |
| VCC | Power Supply | Accepts 2.7V–5.5V; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for noise immunity. |
| 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 | Input-only clock line with Schmitt trigger; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC. |
| SDA | Serial Data I/O | Bidirectional open-drain line; shares pull-up with SCL; supports multi-master arbitration and wire-OR topology. |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte Page Write Mode | Reduces average write time by >90% vs. byte-write for block updates - critical for fast factory programming and field firmware patching. |
| Hardware + Software Write Protection | WP pin enables board-level locking; combined with software-controlled WP toggle, it prevents accidental or malicious memory corruption. |
| 400 kHz I²C at 2.7V | Enables high-speed communication with 3.3V MCUs without level shifters - simplifies BOM and layout in cost-sensitive industrial designs. |
| Industrial Temperature Range | Validated operation from –40°C to +85°C ensures reliable boot-time configuration loading in harsh environments like factory floors or outdoor gateways. |
| 100,000 Write Cycles / 40-Year Retention | Meets long-lifecycle requirements for infrastructure equipment where replacement is impractical - e.g., smart grid meters or railway signaling modules. |
Applications
| Industrial PLC Configuration Storage | Smart Meter Calibration Data Backup |
|---|---|
|
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 power-up and runtime reconfiguration. Use Value: Enables deterministic startup behavior and field-adjustable control logic without requiring MCU flash reprogramming or external storage. |
Use Scenario: Retaining metrology calibration coefficients, tariff schedules, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, write-protected data vault synchronized with real-time clock interrupts for time-stamped event logging. Use Value: Guarantees regulatory compliance through certified data integrity and 40-year retention - eliminating annual recalibration service visits. |
| Medical Device Setup Profiles | Automotive Body Control Module Settings |
|
Use Scenario: Saving user-defined therapy parameters (e.g., infusion rates, alarm limits) across power cycles in portable infusion pumps. IC Role / Device Role / Timing Role: Fail-safe configuration store with hardware write protect activated during treatment delivery. Use Value: Prevents unintended parameter changes during operation - meeting IEC 62304 safety requirements for Class IIa devices. |
Use Scenario: Holding seat position memory, mirror angle presets, and lighting configuration in automotive body control units (BCUs). IC Role / Device Role / Timing Role: Low-power I²C slave storing user preferences persistently across ignition cycles. Use Value: Delivers seamless personalization without draining battery - leveraging 0.6 µA standby current at 2.7V for always-on retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M04-DRMN6TP/K | 4 Mbit SPI interface, 5V-tolerant, 20 MHz max clock; no built-in WP pin - requires external GPIO control. | Requires SPI-capable MCU and additional GPIO for write protection; not drop-in compatible with I²C-based designs. | Select only if migrating to SPI architecture or needing higher density; verify timing margins for 20 MHz operation in noisy automotive environments. |
| BR24G512FJ-WE2 | 512 Kbit I²C EEPROM, same 2.7V–5.5V range and 400 kHz speed, but rated for –40°C to +105°C and offered in 8-pin SOP. | Extended temperature support suits under-hood automotive use; SOP package may require PCB redesign vs. LAP footprint. | Prefer for engine bay applications requiring >85°C operation; confirm mechanical clearance for SOP height vs. LAP profile in space-constrained modules. |
Compared with AT24C512C1-10CI-2.7, M95M04-DRMN6TP/K demands interface and protection logic redesign, while BR24G512FJ-WE2 offers extended temperature margin at the cost of package compatibility - making AT24C512C1-10CI-2.7 optimal for industrial I²C systems prioritizing footprint continuity and proven qualification.
Availability
AT24C512C1-10CI-2.7 is available at Aetrix Electronics and suitable for industrial automation, smart energy metering, and medical device manufacturing requiring stable component supply, long-term lifecycle assurance, and guaranteed traceability.
Supply support for AT24C512C1-10CI-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 delivering microcontrollers, analog components, and memory solutions for embedded control applications.
The AT24C512 series was designed specifically for robust, low-power nonvolatile data storage in industrial and commercial systems where I²C simplicity, write endurance, and extended temperature operation are essential.
FAQ
What is the maximum I²C clock frequency supported by AT24C512C1-10CI-2.7?
The AT24C512C1-10CI-2.7 supports up to 400 kHz I²C clock frequency when operated at 2.7V–5.5V. This is validated across its full industrial temperature range (–40°C to +85°C) and accounts for rise/fall time constraints and bus capacitance limits specified in the AC characteristics table. Higher speeds (e.g., 1 MHz) apply only to the 5.0V variant.
Does AT24C512C1-10CI-2.7 support partial page writes?
Yes, AT24C512C1-10CI-2.7 supports partial page writes within its 128-byte pages. After initiating a page write sequence, the host can transmit fewer than 128 bytes before issuing a STOP condition. The EEPROM automatically increments the internal address pointer and stores each byte contiguously without requiring alignment to page boundaries.
How does the WP pin function on AT24C512C1-10CI-2.7?
On AT24C512C1-10CI-2.7, the WP pin is an active-high hardware write protect. When tied to VCC, all write operations (byte and page) are inhibited; when tied to GND, full read/write access is enabled. If left unconnected, an internal pull-down defaults WP to GND, enabling writes - making external pull-down optional in most designs.
What package type is used for AT24C512C1-10CI-2.7?
AT24C512C1-10CI-2.7 uses the 8-pin Leadless Array Package (LAP), designated as 8C1. This surface-mount package measures 4.90 mm × 3.90 mm with 0.5 mm pitch, features an exposed thermal pad, and is RoHS-compliant - optimized for high-density industrial PCB layouts and automated assembly.
Is AT24C512C1-10CI-2.7 qualified for automotive applications?
No, AT24C512C1-10CI-2.7 is specified for industrial temperature range (–40°C to +85°C) and is not AEC-Q100 qualified. For automotive use, Microchip offers the AT24C512BN-SH-T (AEC-Q100 Grade 2, –40°C to +105°C) in SOIC package - which requires separate validation for safety-critical systems.
AT24C512C1-10CI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TDFN
- 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-LAP (8x5)
AT24C512C1-10CI-2.7 FAQ
1.How can I place an order for AT24C512C1-10CI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512C1-10CI-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 AT24C512C1-10CI-2.7 reliable?
The price and inventory of AT24C512C1-10CI-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 AT24C512C1-10CI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C512C1-10CI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512C1-10CI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512C1-10CI-2.7?
AT24C512C1-10CI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512C1-10CI-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 AT24C512C1-10CI-2.7?
For technical support, including AT24C512C1-10CI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512C1-10CI-2.7 requirements.
6.How does Aetrix verify that AT24C512C1-10CI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C512C1-10CI-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 AT24C512C1-10CI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C512C1-10CI-2.7?
All AT24C512C1-10CI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512C1-10CI-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 AT24C512C1-10CI-2.7 part is unused and in its original packaging.
Return procedure for AT24C512C1-10CI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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