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Microchip Technology AT24C512W1-10SI-2.7
- Part No.:
- AT24C512W1-10SI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AT24C512W1-10SI-2.7.pdf
- Description:
- IC EEPROM 512KBIT I2C 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,533
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Product details
Overview
AT24C512W1-10SI-2.7 from Microchip Technology (formerly Atmel) is a 512 Kbit I²C-compatible serial EEPROM organized as 65,536 × 8 bits, operating at 2.7V–5.5V supply, supporting up to 400 kHz bus speed, with hardware write protection via WP pin and 128-byte page write capability. It is used in industrial sensor calibration storage, embedded system configuration retention, and automotive infotainment firmware parameter backup.
For engineers reviewing the AT24C512W1-10SI-2.7 datasheet, AT24C512W1-10SI-2.7 pinout, AT24C512W1-10SI-2.7 application, or AT24C512W1-10SI-2.7 equivalent, key selection considerations include industrial temperature range (−40°C to +85°C), 2.7V low-voltage operation compatibility, 100,000 write endurance, 40-year data retention, and 8-pin SOIC package with JEDEC-compliant 20-lead gull-wing footprint.
Technical Context
The AT24C512W1-10SI-2.7 implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA/SCL inputs and supports bidirectional data transfer using open-drain signaling. 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), features hardware write protection via the WP pin tied to VCC, and performs self-timed internal write cycles averaging 5 ms. The device includes acknowledge polling support and automatic address roll-over at page boundaries during page writes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (65,536 × 8), enabling storage of large configuration sets or calibration tables in space-constrained designs |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage systems and brown-out tolerant operation in industrial power rails |
| I²C Bus Speed | Up to 400 kHz at 2.7V - balances speed and noise immunity for reliable communication in noisy environments |
| Page Write Size | 128 bytes per page - reduces write transaction overhead and improves firmware update efficiency |
| Write Endurance | 100,000 cycles - suitable for frequent parameter logging or runtime configuration updates |
| Data Retention | 40 years at +85°C - ensures long-term reliability in unattended or sealed-system deployments |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
AT24C512W1-10SI-2.7 is packaged in a 20-pin JEDEC SOIC (20S) with gull-wing leads, 0.300" body width, and standard 0.050" lead pitch - compatible with automated SMT assembly and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired logic level selects one of four possible I²C addresses on shared bus; floating defaults to low |
| A1 | Device Address Input | Second address bit enabling up to four AT24C512 devices on same I²C bus without address conflict |
| NC | No Connect | 12 unused pins (pins 4–9, 11–15, 17–19) - must remain unconnected; no internal function or tie requirement |
| GND | Ground Reference | System return path for all internal circuitry; requires low-impedance connection to minimize noise coupling |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor (0.1 µF ceramic) required within 10 mm of pin for stable I²C timing |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; floating or GND enables full read/write access |
| SCL | Serial Clock Input | Positive-edge clock for data-in; negative-edge clock for data-out; requires external pull-up resistor (1–10 kΩ) |
| SDA | Serial Data I/O | Bidirectional open-drain line; shared across multiple I²C devices; requires same external pull-up as SCL |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte Page Write Mode | Reduces firmware update time by 90% vs. byte-write - enables efficient bulk parameter storage without host-side buffering |
| Hardware Write Protection (WP) | Prevents accidental overwrites during power transients or software faults - eliminates need for software-only lock mechanisms |
| 400 kHz I²C at 2.7V | Enables high-speed configuration reads in low-power microcontroller systems without level-shifting circuitry |
| Schmitt-trigger Inputs with Filtering | Rejects >100 ns glitches and EMI-induced noise on SDA/SCL - improves robustness in motor-drive or switching-power environments |
| 100,000 Write Cycles / 40-Year Retention | Validated for 10+ years of daily recalibration logging in industrial sensors - eliminates field replacement due to wear-out |
Applications
| Industrial Sensor Calibration | Automotive Infotainment Settings |
|---|---|
Use Scenario: Storing factory-trimmed ADC offset/gain coefficients and temperature compensation tables in pressure/temperature sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding calibrated parameters accessed at power-on reset. Use Value: Eliminates need for external calibration EEPROM or MCU flash wear-leveling; retains accuracy across 40-year product lifecycle. |
Use Scenario: Persisting user preferences (volume, EQ, display brightness) and radio station presets in head-unit modules. IC Role / Device Role / Timing Role: Dedicated I²C slave storing volatile UI state between ignition cycles. Use Value: Survives battery disconnects and cold cranking dips; WP pin prevents corruption during vehicle jump-start events. |
| PLC Configuration Backup | Medical Device Setup Profiles |
Use Scenario: Saving ladder logic download history, I/O mapping, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Fail-safe configuration archive updated only during commissioning or maintenance mode. Use Value: Enables rapid recovery after firmware corruption; page-write mode allows atomic save of full 64 KB config image. |
Use Scenario: Storing FDA-cleared therapy profiles (e.g., infusion rates, pressure limits) in portable infusion pumps. IC Role / Device Role / Timing Role: Tamper-resistant parameter vault with hardware write lock enabled during clinical operation. Use Value: Meets IEC 62304 Class B requirements for nonvolatile data integrity; 40-year retention satisfies device shelf-life mandates. |
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-only (4.5–5.5V), no WP pin - requires SPI host and separate protection logic | Lacks I²C compatibility and hardware write protect; suited for high-density SPI-based designs only | Select only if migrating from I²C to SPI architecture and requiring >512 Kbit density |
| BR24G512FJ-WE2 | 512 Kbit I²C EEPROM, 1.7–5.5V, −40°C to +105°C, 1 MHz max speed, 8-pin SOP package | Wider voltage range and higher temp rating, but different pinout (no NC pins) and no 20-pin SOIC option | Choose when extended temperature margin or 1 MHz speed is critical and PCB layout allows SOP rework |
Compared with AT24C512W1-10SI-2.7, M95M04-DRMN6TP/K demands SPI interface redesign and adds software complexity for write protection, while BR24G512FJ-WE2 offers faster speed and broader temp range but requires board-level adaptation for its 8-pin SOP footprint - neither provides drop-in replacement capability.
Availability
AT24C512W1-10SI-2.7 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply, long-lifecycle assurance, and guaranteed traceability.
Supply support for AT24C512W1-10SI-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 components, and memory solutions, with broad industrial and automotive qualification expertise.
The AT24C512W1-10SI-2.7 belongs to Microchip's AT24Cxx serial EEPROM family, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in harsh-environment embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C512W1-10SI-2.7?
The AT24C512W1-10SI-2.7 supports up to 400 kHz I²C clock frequency when operated within its 2.7V–5.5V supply range. This is verified per AC Characteristics table in the official datasheet (Rev. 1116D), where tLOW and tHIGH timing parameters are specified for 400 kHz at 2.7V. Operation above this frequency risks setup/hold violations and failed ACK detection.
Does AT24C512W1-10SI-2.7 support page write operations, and what is the page size?
Yes, AT24C512W1-10SI-2.7 supports 128-byte page write mode, allowing up to 128 bytes to be written in a single I²C transaction. This is confirmed in the "Features" and "Write Operations" sections of the datasheet. Partial page writes are permitted, and address auto-increment occurs within the page boundary - exceeding 128 bytes wraps to the start of the same page.
What is the operating temperature range for AT24C512W1-10SI-2.7, and how is it indicated in the part number?
AT24C512W1-10SI-2.7 is rated for −40°C to +85°C industrial temperature range, explicitly denoted by the "I" suffix in the ordering code. This is validated in the "Ordering Information" table (page 10), where "AT24C512W1-10SI-2.7" maps to Industrial grade with 20S (20-pin SOIC) package and 2.7V operation.
How does the Write Protect (WP) pin function on AT24C512W1-10SI-2.7?
On AT24C512W1-10SI-2.7, the WP pin provides hardware-level write inhibition: when tied to VCC, all write operations (byte and page) are blocked; when tied to GND or left floating (internally pulled down), full read/write access is enabled. This behavior is documented in the "Pin Description" and "DATA SECURITY" sections, ensuring immunity to software crashes or power glitches.
What package type is used for AT24C512W1-10SI-2.7, and is it RoHS compliant?
AT24C512W1-10SI-2.7 uses the 20-pin JEDEC SOIC (20S) package, as confirmed in the "Ordering Information" table and "Packaging Information" section. Per Microchip's official product change notices and packaging documentation, this variant is RoHS compliant and lead-free, meeting JEDEC standard MS-001 BA with gull-wing leads and matte tin plating.
AT24C512W1-10SI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 20-SOIC
AT24C512W1-10SI-2.7 FAQ
1.How can I place an order for AT24C512W1-10SI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512W1-10SI-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 AT24C512W1-10SI-2.7 reliable?
The price and inventory of AT24C512W1-10SI-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 AT24C512W1-10SI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C512W1-10SI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512W1-10SI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512W1-10SI-2.7?
AT24C512W1-10SI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512W1-10SI-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 AT24C512W1-10SI-2.7?
For technical support, including AT24C512W1-10SI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512W1-10SI-2.7 requirements.
6.How does Aetrix verify that AT24C512W1-10SI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C512W1-10SI-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 AT24C512W1-10SI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C512W1-10SI-2.7?
All AT24C512W1-10SI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512W1-10SI-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 AT24C512W1-10SI-2.7 part is unused and in its original packaging.
Return procedure for AT24C512W1-10SI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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