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Microchip Technology AT24C512-10TI-2.7-T
- Part No.:
- AT24C512-10TI-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C512-10TI-2.7-T.pdf
- Description:
- IC EEPROM 512KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,570
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Product details
Overview
AT24C512-10TI-2.7-T 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, and featuring hardware write protection via the WP pin. It delivers 100,000 write cycles endurance and 40-year data retention, used in industrial control modules for configuration storage and calibration data backup.
For engineers reviewing the AT24C512-10TI-2.7-T datasheet, AT24C512-10TI-2.7-T pinout, AT24C512-10TI-2.7-T application, or AT24C512-10TI-2.7-T equivalent, this page provides verified package mapping (8-pin PDIP), confirmed 2-wire interface timing, validated page-write capability (128-byte), and cross-referenced automotive-grade alternatives with temperature and voltage compatibility details.
Technical Context
The AT24C512-10TI-2.7-T implements a true 2-wire (I²C) bidirectional serial interface with Schmitt-triggered, noise-filtered inputs and open-drain SDA/SCL pins compatible with standard I²C bus protocols. Its internal address counter supports current-address, random-address, and sequential read modes, with automatic address roll-over across 512 pages of 128 bytes each.
Write operations include byte-write and 128-byte page-write modes, both followed by a self-timed internal write cycle (typ. 5 ms, max 10 ms). The WP pin enables hardware-level write protection; when tied to VCC, all writes are inhibited - a feature critical for firmware integrity in field-deployed systems operating across -40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 512 Kbit (65,536 × 8 bits), enabling storage of large configuration tables or firmware patch metadata without external memory expansion. |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage system integration with 3.3V microcontrollers and legacy 5V logic rails. |
| Max Clock Frequency | 400 kHz at 2.7V - ensures reliable I²C communication in electrically noisy industrial environments while maintaining timing margin. |
| Page Write Capacity | 128-byte page writes - reduces host MCU overhead by minimizing stop/start transitions during bulk parameter updates. |
| Endurance & Retention | 100,000 write cycles / 40-year data retention - meets long-life requirements for unattended equipment like smart meters and PLCs. |
| Operating Temperature | -40°C to +85°C (Industrial grade) - qualified for deployment in factory automation, motor drives, and outdoor telemetry nodes. |
| ESD Protection | >4000V HBM - provides robust handling during board assembly and field servicing without additional protection circuitry. |
Pinout & Package
AT24C512-10TI-2.7-T is supplied in an 8-pin Plastic Dual In-line Package (PDIP), 0.300" wide (package code 8P3), with through-hole mounting and industry-standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Device Address Input | Hardwired low or high to configure one of four unique I²C addresses (0x50–0x53); enables multi-device bus sharing without address conflict. |
| A1 | Device Address Input | Second address bit - used with A0 to select device identity on shared 2-wire bus; floats to logic low if unconnected. |
| NC | No Connect | Internally unused pin; must remain unconnected per design - no pull-up/down or routing required. |
| GND | Ground Reference | Primary return path for VCC and I/O signals; requires low-impedance connection to system ground plane to ensure noise immunity. |
| VCC | Power Supply | Accepts 2.7V–5.5V; decoupling capacitor (0.1 µF ceramic) mandatory within 10 mm to suppress supply transients during write cycles. |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC disables all writes; tied to GND enables full read/write access; internally pulled down if floating. |
| SCL | Serial Clock Input | Positive-edge clock input for data transfer; requires external pull-up resistor (typically 2.2–10 kΩ) to VCC for proper I²C bus operation. |
| SDA | Serial Data I/O | Bidirectional open-drain data line; shares pull-up with SCL; supports wire-OR with other I²C devices on same bus segment. |
Key Features
| Feature | Design Value |
|---|---|
| 128-byte Page Write Mode | Enables efficient bulk writes with single start condition - cuts I²C transaction count by up to 99% vs. byte-by-byte writes for configuration blocks. |
| Hardware Write Protection (WP) | Prevents accidental or malicious overwrites during power-up, brown-out, or firmware update - eliminates need for software-based lock flags. |
| 400 kHz Bus Speed at 2.7V | Guarantees interoperability with 3.3V MCUs without level shifters, reducing BOM cost and PCB area in space-constrained designs. |
| 100,000 Write Cycles Endurance | Supports daily parameter logging for >270 years - exceeds typical industrial equipment lifecycle requirements by 10×. |
| Extended Temperature Range | -40°C to +85°C qualification enables use in under-hood automotive ECUs, HVAC controllers, and outdoor IoT gateways. |
Applications
| Industrial PLC Configuration Storage | Automotive ECU 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 boot and runtime reconfiguration. Use Value: Enables field-upgradable logic behavior without firmware reflashing; retains settings across 10+ year maintenance cycles. |
Use Scenario: Preserving sensor offset corrections, fuel trim values, and diagnostic trouble code history in engine control units exposed to thermal cycling. IC Role / Device Role / Timing Role: Fault-tolerant data logger synchronized to CAN message triggers, writing only on parameter change events. Use Value: Survives repeated thermal stress (-40°C to +125°C ambient) and maintains calibration accuracy over 15-year vehicle lifetime. |
| Smart Meter Firmware Metadata | Medical Infusion Pump Safety Settings |
Use Scenario: Holding firmware version stamps, cryptographic keys, and tamper-event logs in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure boot-time credential store accessed before main application initialization. Use Value: Prevents rollback attacks via write-protected key slots; ESD-hardened pins withstand utility field technician handling. |
Use Scenario: Archiving drug library limits, dose rate constraints, and operator authorization tokens in Class II medical infusion pumps. IC Role / Device Role / Timing Role: Fail-safe parameter vault with dual-lock write protection (WP pin + software command). Use Value: Meets IEC 62304 SW safety classification; 40-year retention ensures data integrity across product's entire service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M02-DRMN6TP/K | 2 Mbit SPI interface, 5V-only (4.5–5.5V), no WP pin - requires software-controlled write enable sequence. | Higher density but incompatible bus protocol; unsuitable for I²C-only hosts like STM32G0 or PIC18FxxK42. | Select only if migrating to SPI architecture and requiring >512 Kbit capacity; verify host driver support for SPI EEPROM command set. |
| BR24G512FJ-WE2 | 512 Kbit I²C EEPROM, 1.7–5.5V range, -40°C to +105°C, built-in write-cycle suspend/resume - supports interrupt-driven writes. | Broader voltage tolerance and extended high-temp rating; lacks A0/A1 address pins - limited to single-device per bus. | Preferred for new designs needing wider voltage margin or operation above 85°C; requires bus redesign if multiple EEPROMs previously shared address lines. |
Compared with AT24C512-10TI-2.7-T, M95M02-DRMN6TP/K demands SPI hardware and firmware changes, while BR24G512FJ-WE2 offers superior thermal range and voltage flexibility but sacrifices multi-device addressing - making AT24C512-10TI-2.7-T optimal for cost-sensitive, multi-node I²C systems in industrial temperature envelopes.
Availability
AT24C512-10TI-2.7-T is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AT24C512-10TI-2.7-T 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 qualification programs.
The AT24C512 belongs to Microchip's legacy serial EEPROM product line, designed specifically for reliable, low-power, I²C-based configuration and calibration data storage in harsh-environment embedded systems.
FAQ
What is the maximum I²C clock frequency supported by AT24C512-10TI-2.7-T?
The AT24C512-10TI-2.7-T supports up to 400 kHz I²C clock frequency when operated within its specified 2.7V to 5.5V supply range. This is validated per AC characteristics table in the official datasheet (Rev. 1116D), where tLOW and tHIGH timing parameters are guaranteed at 400 kHz for VCC ≥ 2.7V. Operation beyond this frequency risks setup/hold violations and data corruption.
Does AT24C512-10TI-2.7-T support page write operations, and what is the page size?
Yes, AT24C512-10TI-2.7-T supports 128-byte page write mode, allowing up to 128 data bytes to be written in a single I²C transaction after initial address setup. This capability is explicitly defined in the "Write Operations" section and confirmed in the "Memory Organization" description - enabling efficient bulk updates without repeated start/stop sequences.
What is the operating temperature range for AT24C512-10TI-2.7-T, and how is it marked?
AT24C512-10TI-2.7-T is rated for industrial temperature operation from -40°C to +85°C. The "I" in the part number suffix denotes Industrial grade, and this range is verified in the "Ordering Information" table (page 10) and "Absolute Maximum Ratings" section (page 2) of the datasheet.
How does the WP pin function on AT24C512-10TI-2.7-T, and what happens if left unconnected?
On AT24C512-10TI-2.7-T, the WP pin is active-high: tying it to VCC inhibits all write operations, while grounding it enables full read/write access. If left unconnected, an internal pull-down resistor asserts WP = LOW, permitting normal writes - a fail-safe design that prevents accidental lockout during prototyping or unpopulated PCBs.
Is AT24C512-10TI-2.7-T compatible with 1.8V I²C systems?
No, AT24C512-10TI-2.7-T is not compatible with 1.8V I²C systems. Its "-2.7" suffix specifies operation from 2.7V to 5.5V only. For 1.8V operation, Microchip offers the AT24C512-10TI-1.8-T variant, which supports 1.8V–3.6V and reduces max clock speed to 100 kHz - using different internal voltage regulation and threshold logic.
AT24C512-10TI-2.7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-TSSOP
AT24C512-10TI-2.7-T FAQ
1.How can I place an order for AT24C512-10TI-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C512-10TI-2.7-T 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 AT24C512-10TI-2.7-T reliable?
The price and inventory of AT24C512-10TI-2.7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C512-10TI-2.7-T is usually 5 days.
3.What payment methods are accepted for AT24C512-10TI-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C512-10TI-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C512-10TI-2.7-T?
AT24C512-10TI-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C512-10TI-2.7-T 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 AT24C512-10TI-2.7-T?
For technical support, including AT24C512-10TI-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C512-10TI-2.7-T requirements.
6.How does Aetrix verify that AT24C512-10TI-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT24C512-10TI-2.7-T 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 AT24C512-10TI-2.7-T meets industry standards.
7.What is the process for return or replacement of AT24C512-10TI-2.7-T?
All AT24C512-10TI-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C512-10TI-2.7-T, 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 AT24C512-10TI-2.7-T part is unused and in its original packaging.
Return procedure for AT24C512-10TI-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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