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Microchip Technology AT24C16AY1-10YI-2.7
- Part No.:
- AT24C16AY1-10YI-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
AT24C16AY1-10YI-2.7.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8MAP
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
AT24C16AY1-10YI-2.7 from Microchip Technology (formerly Atmel) is a 16-kbit I²C-compatible serial EEPROM with 2048 × 8-bit organization, 2.7V to 5.5V supply operation, and automotive-grade industrial temperature range (−40°C to +85°C). It features 16-byte page write capability, 400 kHz clock rate at 2.7V, and hardware write protection via the WP pin. It is used in embedded systems for parameter storage, calibration data retention, and configuration backup in automotive control units and industrial sensors.
For engineers reviewing the AT24C16AY1-10YI-2.7 datasheet, AT24C16AY1-10YI-2.7 pinout, AT24C16AY1-10YI-2.7 application, or AT24C16AY1-10YI-2.7 equivalent, key selection considerations include its 8-lead MAP package (4.90 mm × 3.00 mm), no-connect address pins (A0–A2), 100-year data retention, 1 million write cycles, and compatibility with standard 2-wire I²C bus timing at 2.7V–5.5V.
Technical Context
The AT24C16AY1-10YI-2.7 implements a fixed 2-wire I²C interface with open-drain SDA and Schmitt-triggered SCL inputs, supporting standard-mode (100 kHz) and fast-mode (400 kHz) operation depending on VCC. Its internal architecture uses 128 pages of 16 bytes each, with automatic address incrementing during page writes and roll-over behavior at page boundaries.
Unlike lower-density variants (e.g., AT24C02A/04A/08A), this device omits A0–A2 address pins-limiting bus topology to one AT24C16A per I²C segment-and employs full-array write protection when WP = VCC. It operates across −40°C to +85°C with 1.6 µA standby current at 2.7V and meets automotive-grade reliability requirements including 100-year data retention and 1M endurance cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized as 128 pages × 16 bytes - enables compact firmware parameter storage without external addressing logic. |
| Supply Voltage | 2.7V to 5.5V - supports direct integration into 3.3V and 5V microcontroller systems without level-shifting. |
| I²C Clock Rate | 400 kHz at 2.7V/5V - allows high-speed configuration updates while maintaining noise immunity via Schmitt-trigger inputs. |
| Write Cycle Time | 5 ms max self-timed write - eliminates need for external polling delay; ACK polling supported for synchronization. |
| Data Retention | 100 years - ensures long-term validity of stored calibration, serial numbers, or security keys in unpowered devices. |
| Endurance | 1 million write cycles - suitable for applications requiring frequent field-updatable settings (e.g., energy meter tariff tables). |
| Operating Temperature | −40°C to +85°C - qualified for under-hood automotive modules and industrial PLCs without derating. |
Pinout & Package
AT24C16AY1-10YI-2.7 uses an 8-lead Miniature Array Package (MAP), 4.90 mm × 3.00 mm body size, non-leaded, dual footprint compatible with SOIC and TSSOP layouts. Pin 1 is marked by an index area on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power Supply | Connects to 2.7–5.5V system rail; decoupling capacitor required near pin for noise suppression during write cycles. |
| WP | Write Protect Input | Hardwired to GND for full read/write access; tied to VCC to disable all writes and protect entire 16K array. |
| SCL | Serial Clock Input | Accepts I²C clock signal with Schmitt-trigger input; requires external pull-up resistor (typically 2.2–10 kΩ). |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; must be wire-ORed with other I²C devices using shared pull-up. |
| A0, A1, A2 | No-connect (NC) | Internally disconnected; left floating or grounded - no device addressing capability; only one AT24C16A allowed per I²C bus. |
| GND | Ground Reference | System ground return path; must be low-impedance and routed separately from noisy digital grounds. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write Protection | WP pin disables all write operations when pulled high, preventing accidental overwrites during power transients or firmware faults. |
| 16-byte Page Write | Reduces I²C transaction overhead by up to 15× vs. byte writes - critical for efficient bulk configuration updates in real-time systems. |
| 100-Year Data Retention | Guarantees integrity of stored calibration coefficients, device IDs, or cryptographic keys across product lifetime without refresh. |
| Automotive-Grade Reliability | Qualified to extended temperature range (−40°C to +85°C) and supports lead-free/halogen-free assembly for automotive compliance. |
| No Device Address Pins | Eliminates external address resistors and simplifies PCB layout - ideal for single-EEPROM designs where bus arbitration is unnecessary. |
Applications
| Automotive Body Control Module | Industrial Sensor Calibration Storage |
|---|---|
Use Scenario: Storing seat position memory, mirror angle presets, and lighting profiles in vehicle door modules. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during MCU boot and runtime updates. Use Value: Enables user-customizable settings persistence across ignition cycles with guaranteed 100-year data retention and 1M write cycles. |
Use Scenario: Holding factory-calibrated offset/gain coefficients for analog sensor front-ends in pressure or temperature transmitters. IC Role / Device Role / Timing Role: I²C slave device storing trim values written once during production test and read at power-on reset. Use Value: Eliminates need for external trimming components; supports re-calibration in field service via secure I²C write commands. |
| Smart Energy Meter Firmware Settings | Medical Diagnostic Device Configuration |
Use Scenario: Saving tariff schedules, demand-response thresholds, and communication parameters in utility meters deployed for >10 years. IC Role / Device Role / Timing Role: Low-power I²C EEPROM interfaced to metering SoC; accessed during initialization and firmware update verification. Use Value: Meets IEC 62056 requirements for data integrity; 2.7V operation ensures functionality during brown-out conditions. |
Use Scenario: Storing patient-specific protocol parameters, display preferences, and safety lockout states in portable ultrasound or ECG units. IC Role / Device Role / Timing Role: Secure configuration store with hardware write protection enabled during clinical operation. Use Value: Prevents unauthorized modification of diagnostic settings; 8-lead MAP package enables compact, high-density PCB design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics M24C16-WMN6TP | Same 16Kbit density, 2.5–5.5V supply, 400 kHz I²C, but uses 8-lead SOIC (8S1) instead of MAP (8Y1); A0–A2 pins are NC. | Requires PCB footprint change; lacks automotive qualification (only industrial −40°C to +85°C). | Select if SOIC layout exists and automotive temp grade is not required. |
| ON Semiconductor CAT24C16WI-GT3 | Identical 16Kbit, 2.5–5.5V, 400 kHz I²C, 8-lead TSSOP (8A2) package; WP pin functional; A0–A2 NC. | TSSOP footprint differs from MAP; same automotive temp rating but lower endurance (400k cycles vs. 1M). | Choose for cost-sensitive designs where 400k cycles suffice and TSSOP is preferred. |
Compared with M24C16-WMN6TP and CAT24C16WI-GT3, AT24C16AY1-10YI-2.7 offers superior endurance (1M vs. ≤400k cycles), native MAP packaging for space-constrained automotive modules, and full automotive qualification - making it optimal for safety-critical or long-lifecycle deployments.
Availability
AT24C16AY1-10YI-2.7 is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor calibration systems, smart energy metering platforms, and medical diagnostic equipment requiring stable component supply across extended product lifecycles.
Supply support for AT24C16AY1-10YI-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 memory solutions, with a focus on embedded control and connectivity.
The AT24CxxA family was designed for reliable, low-voltage, low-power nonvolatile data storage in resource-constrained embedded systems - particularly targeting automotive, industrial, and consumer applications demanding long-term data integrity.
FAQ
What is the memory organization of the AT24C16AY1-10YI-2.7?
The AT24C16AY1-10YI-2.7 contains 16,384 bits organized as 2048 words of 8 bits each (2048 × 8), internally segmented into 128 pages of 16 bytes. This structure supports efficient 16-byte page writes and eliminates the need for external address latching during sequential access. The AT24C16AY1-10YI-2.7 does not use A0–A2 pins, so addressing is fixed and limited to a single device per I²C bus.
Does the AT24C16AY1-10YI-2.7 support 1.8V operation?
No, the AT24C16AY1-10YI-2.7 is specifically rated for 2.7V to 5.5V operation, as indicated by the "-2.7" suffix in its part number. For 1.8V operation, Microchip offers the AT24C16AY1-10YI-1.8 variant. Using the -2.7 version below 2.7V may result in unreliable I²C communication, incomplete writes, or failure to meet AC timing specifications - the AT24C16AY1-10YI-2.7 is not characterized for sub-2.7V functionality.
What is the function of the WP pin on the AT24C16AY1-10YI-2.7?
The WP (Write Protect) pin on the AT24C16AY1-10YI-2.7 provides hardware-level write inhibition: when pulled high to VCC, it disables all write operations to the entire 16K array; when grounded, full read/write access is enabled. Unlike earlier AT24Cxx variants, the AT24C16AY1-10YI-2.7 applies protection to the full memory space - no partial-array protection modes are available. This ensures robust safeguarding against firmware glitches or voltage droop-induced corruption.
Can multiple AT24C16AY1-10YI-2.7 devices share the same I²C bus?
No, the AT24C16AY1-10YI-2.7 does not support device addressing because its A0, A1, and A2 pins are no-connects - the I²C device address is fixed and non-configurable. Therefore, only one AT24C16AY1-10YI-2.7 can reside on a given I²C bus segment. To expand memory capacity, designers must use separate I²C buses, multiplexers, or higher-density alternatives like the AT24CM02 (2 Mbit), not additional AT24C16AY1-10YI-2.7 units.
What package type does the AT24C16AY1-10YI-2.7 use, and is it RoHS-compliant?
The AT24C16AY1-10YI-2.7 uses an 8-lead Miniature Array Package (MAP), designated as 8Y1, with dimensions 4.90 mm × 3.00 mm and non-leaded construction. It is lead-free and halogen-free, fully compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3). The AT24C16AY1-10YI-2.7 is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards without preconditioning.
AT24C16AY1-10YI-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 2K x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 5ms
- Access Time:
- 4.5 µs
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MAP (3x4.9)
AT24C16AY1-10YI-2.7 FAQ
1.How can I place an order for AT24C16AY1-10YI-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16AY1-10YI-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 AT24C16AY1-10YI-2.7 reliable?
The price and inventory of AT24C16AY1-10YI-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 AT24C16AY1-10YI-2.7 is usually 5 days.
3.What payment methods are accepted for AT24C16AY1-10YI-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16AY1-10YI-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16AY1-10YI-2.7?
AT24C16AY1-10YI-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16AY1-10YI-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 AT24C16AY1-10YI-2.7?
For technical support, including AT24C16AY1-10YI-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16AY1-10YI-2.7 requirements.
6.How does Aetrix verify that AT24C16AY1-10YI-2.7 is sourced from the original manufacturer or authorized distributors?
All AT24C16AY1-10YI-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 AT24C16AY1-10YI-2.7 meets industry standards.
7.What is the process for return or replacement of AT24C16AY1-10YI-2.7?
All AT24C16AY1-10YI-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16AY1-10YI-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 AT24C16AY1-10YI-2.7 part is unused and in its original packaging.
Return procedure for AT24C16AY1-10YI-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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