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Microchip Technology AT24C16AN-10SU-2.7-T
- Part No.:
- AT24C16AN-10SU-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C16AN-10SU-2.7-T.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,341
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Product details
Overview
AT24C16AN-10SU-2.7-T from Microchip Technology is a 16 Kbit (2048 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 400 kHz I²C interface speed at 2.7V/5V, 16-byte page write capability, and hardware write protection via the WP pin. It operates across industrial temperature (–40°C to +85°C) and is housed in an 8-lead JEDEC SOIC package.
For engineers reviewing the AT24C16AN-10SU-2.7-T datasheet, AT24C16AN-10SU-2.7-T pinout, AT24C16AN-10SU-2.7-T application, or AT24C16AN-10SU-2.7-T equivalent, key selection criteria include I²C timing compliance at 2.7V, page write endurance (1M cycles), data retention (100 years), and SOIC-8 mechanical compatibility for legacy board reuse.
Technical Context
The AT24C16AN-10SU-2.7-T implements a standard two-wire (I²C-compatible) serial interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. It uses an 11-bit internal word address for random access and supports byte and 16-byte page writes with self-timed internal write cycles (≤5 ms).
Unlike smaller family members, the AT24C16A disables A0–A2 device addressing pins (NC), limiting bus topology to one device per I²C segment; memory page addressing is handled by the upper 3 bits of the data word address instead.
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 address latches. |
| Supply Voltage | 2.7V to 5.5V - compatible with 3.3V and 5V logic systems without level shifting. |
| I²C Clock Frequency | 400 kHz max at VCC ≥ 2.7V - supports high-speed configuration loading in real-time control systems. |
| Write Cycle Time | ≤5 ms - defines minimum inter-write interval; critical for burst logging applications requiring deterministic latency. |
| Endurance | 1 million write cycles per byte - ensures reliability in frequently updated calibration or event-log storage. |
| Data Retention | 100 years at +25°C - guarantees long-term integrity of stored device identity, security keys, or calibration coefficients. |
| Operating Temperature | –40°C to +85°C - validated for industrial automation, automotive body electronics, and outdoor metering environments. |
Pinout & Package
Package: 8-lead JEDEC SOIC (8S1), 0.150" wide body, RoHS-compliant green package with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect (NC) | Internally unused; must be tied to GND or VCC per PCB layout - no device addressing function on AT24C16A. |
| A1 | No Connect (NC) | Internally unused; no impact on I²C address - simplifies routing versus smaller family variants. |
| A2 | No Connect (NC) | Internally unused; eliminates need for external pull-up/down resistors on address lines. |
| GND | Ground Reference | System return path for VCC and I/O; requires low-impedance connection to minimize noise coupling into SDA/SCL. |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for stable I²C operation. |
| WP | Write Protect Input | Active-high hardware lock: tied to VCC to disable all writes; tied to GND for normal read/write access. |
| SCL | Serial Clock Input | Positive-edge clock for data sampling; open-drain compatible with 10 kΩ pull-up to VCC. |
| SDA | Serial Data I/O | Bidirectional open-drain bus line; shared across multiple I²C devices with single pull-up resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire Serial Interface | Fully compliant with I²C-bus specification (400 kHz at 2.7V), enabling direct connection to microcontrollers with native I²C peripherals - no protocol translation required. |
| Schmitt Trigger Inputs | Integrated noise filtering on SDA/SCL reduces susceptibility to EMI in motor-driven or switching-power environments - eliminates need for external RC filters. |
| 16-byte Page Write | Allows up to 16 bytes to be written in a single transaction with one stop condition - cuts firmware overhead by ~85% vs. individual byte writes for block updates. |
| Hardware Write Protection | WP pin provides fail-safe, non-software-dependent lock against accidental overwrites - essential for factory-programmed calibration or security keys. |
| High Reliability | 1M write cycles and 100-year data retention meet industrial-grade requirements for unattended equipment with 10+ year service life. |
Applications
| Industrial Sensor Calibration Storage | Smart Meter Firmware Parameter Storage |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed during power-up initialization via I²C before ADC conversion begins. Use Value: Eliminates manual potentiometer adjustment; enables field recalibration via host MCU without firmware update. | Use Scenario: Holding tariff tables, pulse constants, and communication settings in electricity/water meters deployed for >15 years. IC Role / Device Role / Timing Role: Persistent parameter store updated only during firmware upgrades or utility reconfiguration events. Use Value: Guarantees 100-year data retention and 1M write cycles - exceeds meter lifetime and regulatory audit requirements. |
| Automotive Body Control Module NVM | POS Terminal Configuration Memory |
Use Scenario: Saving user preferences (mirror position, seat memory) and fault logs in 12V automotive BCMs operating from –40°C to +85°C. IC Role / Device Role / Timing Role: I²C slave device interfaced to 32-bit ARM Cortex-M MCU; accessed during wake-up sequence after ignition-on. Use Value: 2.7V–5.5V operation tolerates battery voltage sag during cranking; WP pin prevents corruption during brown-out conditions. | Use Scenario: Storing merchant ID, terminal serial number, and encryption keys in PCI-DSS-compliant point-of-sale terminals. IC Role / Device Role / Timing Role: Secure boot-time configuration store accessed once per power cycle before TLS handshake initialization. Use Value: Hardware WP pin blocks runtime overwrite attempts - satisfies PCI requirement for immutable device identity storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16B-SSHM-T | Same 16K capacity and SOIC-8 package; supports 1.7V–5.5V operation and enhanced ESD rating (4 kV HBM). | Validated for newer designs requiring extended low-voltage headroom or higher robustness in noisy retail/industrial settings. | Select when upgrading from legacy AT24C16A-based designs needing broader VCC range or improved latch-up immunity. |
| BR24G16NUX-10TTR | Rohm 16K I²C EEPROM in same SOIC-8; supports 1.6V–5.5V, 1 MHz interface at 5V, and 10M write cycles endurance. | Targeted at high-throughput consumer electronics where faster write speed and longer endurance justify vendor change. | Choose for new designs prioritizing write throughput or >10× endurance margin - not drop-in due to different device address mapping. |
Compared with AT24C16AN-10SU-2.7-T, the AT24C16B-SSHM-T extends voltage range downward and improves ESD tolerance while maintaining full pin and code compatibility; BR24G16NUX-10TTR offers higher speed and endurance but requires firmware validation for address handling and timing margins.
Availability
AT24C16AN-10SU-2.7-T is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter firmware storage, and automotive body control module NVM requiring stable component supply across extended temperature and long product lifecycles.
Supply support for AT24C16AN-10SU-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The AT24CxxA family delivers cost-optimized, I²C-compatible serial EEPROMs designed for reliable parameter storage in space-constrained, low-power embedded systems where firmware simplicity and long-term data integrity are critical.
FAQ
What is the maximum I²C clock frequency supported by the AT24C16AN-10SU-2.7-T?
The AT24C16AN-10SU-2.7-T supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7V. At lower voltages (e.g., 1.8V), the maximum rated speed drops to 100 kHz - but this part is specified for 2.7V–5.5V operation, so 400 kHz is its guaranteed maximum. The AT24C16AN-10SU-2.7-T meets standard-mode Plus (Sm+) timing requirements under these conditions.
Does the AT24C16AN-10SU-2.7-T require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C16AN-10SU-2.7-T requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. Typical values are 2.2 kΩ to 10 kΩ to VCC, selected based on bus capacitance and desired rise time. The AT24C16AN-10SU-2.7-T's Schmitt-trigger inputs tolerate slower edges, allowing flexibility in resistor selection for noise-prone environments.
How many devices can share the same I²C bus with the AT24C16AN-10SU-2.7-T?
Only one AT24C16AN-10SU-2.7-T can operate per I²C bus segment because its A0, A1, and A2 pins are internally disconnected (NC) and unused for device addressing. Unlike AT24C01A/02/04/08A variants, the AT24C16A relies solely on fixed 7-bit device address 0x50 - no hardware address variation is possible. For multi-device buses, use smaller-capacity variants or alternate EEPROM families.
What is the purpose of the WP (Write Protect) pin on the AT24C16AN-10SU-2.7-T?
The WP pin on the AT24C16AN-10SU-2.7-T provides hardware-level write protection: when pulled high to VCC, it disables all write operations (byte, page, and write-enable commands), preserving stored data even if firmware malfunctions. When tied to GND, full read/write access is enabled. This feature is critical for safeguarding calibration data, security keys, or configuration parameters in the AT24C16AN-10SU-2.7-T.
Is the AT24C16AN-10SU-2.7-T suitable for automotive applications?
The AT24C16AN-10SU-2.7-T is qualified for industrial temperature (–40°C to +85°C) and meets AEC-Q200 stress test guidelines for passive components, but it is not officially AEC-Q100 qualified as an integrated circuit. It is widely used in automotive body electronics (e.g., mirror/seat modules) where ambient temperatures stay within its spec. For safety-critical powertrain or ADAS applications, Microchip's AEC-Q100-qualified AT24C16D variant is recommended instead of the AT24C16AN-10SU-2.7-T.
AT24C16AN-10SU-2.7-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-SOIC
AT24C16AN-10SU-2.7-T FAQ
1.How can I place an order for AT24C16AN-10SU-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16AN-10SU-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 AT24C16AN-10SU-2.7-T reliable?
The price and inventory of AT24C16AN-10SU-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 AT24C16AN-10SU-2.7-T is usually 5 days.
3.What payment methods are accepted for AT24C16AN-10SU-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16AN-10SU-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16AN-10SU-2.7-T?
AT24C16AN-10SU-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16AN-10SU-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 AT24C16AN-10SU-2.7-T?
For technical support, including AT24C16AN-10SU-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16AN-10SU-2.7-T requirements.
6.How does Aetrix verify that AT24C16AN-10SU-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT24C16AN-10SU-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 AT24C16AN-10SU-2.7-T meets industry standards.
7.What is the process for return or replacement of AT24C16AN-10SU-2.7-T?
All AT24C16AN-10SU-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16AN-10SU-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 AT24C16AN-10SU-2.7-T part is unused and in its original packaging.
Return procedure for AT24C16AN-10SU-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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