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Microchip Technology AT24C16A-10TU-2.7-T
- Part No.:
- AT24C16A-10TU-2.7-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT24C16A-10TU-2.7-T.pdf
- Description:
- IC EEPROM 16KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,917
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Product details
Overview
AT24C16A-10TU-2.7-T from Microchip Technology is a 16-Kbit (2048 × 8) two-wire serial EEPROM with 2.7V to 5.5V supply operation, 128-page × 16-byte page architecture, 400 kHz I²C clock support at 2.7V+, and hardware write protection via WP pin. It serves as nonvolatile configuration storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT24C16A-10TU-2.7-T datasheet, AT24C16A-10TU-2.7-T pinout, AT24C16A-10TU-2.7-T application, or AT24C16A-10TU-2.7-T equivalent, key selection criteria include 16K-bit density, TSSOP-8 package compatibility, 100-year data retention, 1 million write cycles, and 2.7V–5.5V operational voltage range for industrial-grade system integration.
Technical Context
The AT24C16A-10TU-2.7-T implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting both byte and 16-byte page writes. Its internal address counter enables sequential read across memory boundaries with automatic rollover.
Unlike earlier family members, the AT24C16A omits A0–A2 device address pins-these are NC-and uses all three bits for memory page addressing, limiting bus topology to one device per I²C segment. Write protection is implemented via dedicated WP pin tied to VCC or GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 words × 8 bits), organized as 128 pages × 16 bytes - supports compact firmware parameter storage without external address latching. |
| Supply Voltage | 2.7V to 5.5V - compatible with 3.3V and 5V logic domains; no level-shifting required in mixed-voltage systems. |
| I²C Clock Frequency | Up to 400 kHz at VCC ≥ 2.7V - enables fast configuration loading in real-time control loops. |
| Write Cycle Time | Max 5 ms per byte/page - defines minimum inter-write delay; critical for time-sensitive calibration logging. |
| Data Retention | 100 years at +25°C - ensures long-term reliability in unattended industrial equipment. |
| Endurance | 1 million write cycles - supports frequent recalibration or event logging in field-deployed devices. |
| Operating Temperature | −40°C to +85°C - qualified for industrial ambient environments without derating. |
Pinout & Package
AT24C16A-10TU-2.7-T is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 4.4 mm body width, lead-free/RoHS-compliant, with 0.65 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Internally unused; must be tied to GND or left floating per design - no device addressing function. |
| A1 | No Connect | Internally unused; no impact on memory mapping or I²C address - not bonded in die. |
| A2 | No Connect | Internally unused; all three address bits serve as MSBs of word address - no external connection needed. |
| GND | Ground Reference | Return path for VCC and I/O; requires low-impedance PCB plane for noise immunity during write cycles. |
| VCC | Power Supply | 2.7V–5.5V input; decoupling capacitor (0.1 µF ceramic) mandatory within 5 mm of pin for stable write operation. |
| WP | Write Protect Control | Hardware lock: tied to VCC → full-array write disable; tied to GND → normal R/W - eliminates software-only corruption risk. |
| SCL | Serial Clock Input | Positive-edge sampled clock; requires external pull-up; max 400 kHz frequency defines timing budget for host MCU I²C peripheral. |
| SDA | Serial Data I/O | Open-drain bidirectional line; shared across I²C bus; requires external pull-up; supports multi-master arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write | Reduces I²C transaction overhead by up to 15× vs. byte writes - accelerates bulk parameter updates (e.g., sensor offset tables). |
| Schmitt Trigger Inputs | Suppresses noise on SCL/SDA lines in electrically noisy industrial enclosures - eliminates spurious start/stop detection. |
| Self-timed Write Cycle | Internal erase/write completion without host polling - frees MCU resources during nonvolatile store operations. |
| Hardware Write Protection | WP pin enables fail-safe lockdown of critical configuration data - prevents accidental overwrites during firmware updates. |
| 100-Year Data Retention | Validated at +25°C; de-rates predictably at elevated temperatures - supports 15+ year product lifecycle without refresh. |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Data |
|---|---|
Use Scenario: Storing I/O module mappings, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in factory automation. IC Role / Device Role / Timing Role: Nonvolatile configuration register bank accessed via I²C during boot and runtime reconfiguration. Use Value: Enables field-upgradable settings without firmware reflashing; 1M endurance supports daily parameter adjustments over 27 years. |
Use Scenario: Holding factory-calibrated sensor offsets, gain coefficients, and safety-critical thresholds in portable diagnostic equipment. IC Role / Device Role / Timing Role: Secure, tamper-resistant storage for regulatory-mandated calibration records accessible only after authentication handshake. Use Value: WP pin prevents unauthorized modification; 100-year retention satisfies FDA 21 CFR Part 11 long-term recordkeeping requirements. |
| Smart Energy Meter Firmware Parameters | Automotive Body Control Module Settings |
Use Scenario: Saving tariff schedules, pulse constants, and metering algorithm flags in ANSI C12.22-compliant electricity meters exposed to wide temperature swings. IC Role / Device Role / Timing Role: Low-power I²C slave storing infrequently changed operational parameters with guaranteed integrity across power cycles. Use Value: −40°C to +85°C rating ensures accuracy in outdoor meter enclosures; 2.7V min VCC supports brown-out resilience during grid instability. |
Use Scenario: Retaining seat position memory, mirror angle presets, and lighting profiles in automotive BCMs subjected to vibration and thermal cycling. IC Role / Device Role / Timing Role: Robust nonvolatile scratchpad for user-customizable settings retained across ignition cycles and battery disconnects. Use Value: 1M write cycles withstand 10+ years of daily use; TSSOP-8 package fits constrained PCB space behind dashboard bezels. |
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 | Successor part with enhanced ESD rating (4 kV HBM), same pinout and 16K-bit organization, but rated for 1.7V–5.5V operation. | Preferred for new designs requiring extended low-voltage margin or higher robustness in electrostatic-prone environments. | Select AT24C16B-SSHM-T when designing for 1.7V systems or where >4 kV HBM immunity is mandated. |
| M95128-WMN6TP | 128 Kbit SPI EEPROM (16K × 8), 2.5V–5.5V, 20 MHz SPI interface - different protocol, higher density, faster interface. | Suitable where MCU has SPI peripheral available and higher throughput or larger storage is needed; not I²C-compatible. | Choose M95128-WMN6TP only if SPI is preferred over I²C and 8× more capacity is required - not a drop-in replacement. |
Compared with AT24C16A-10TU-2.7-T, the AT24C16B-SSHM-T offers broader voltage support and improved ESD tolerance while maintaining identical functionality and footprint; the M95128-WMN6TP provides greater density and speed but requires SPI hardware and firmware changes.
Availability
AT24C16A-10TU-2.7-T is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostics, smart energy meters, and automotive body control modules requiring stable component supply across extended product lifecycles.
Supply support for AT24C16A-10TU-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 manufacturer specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.
The AT24CxxA series was designed for low-power, space-constrained embedded systems needing reliable, standardized I²C EEPROM storage with minimal external components and long-term data integrity.
FAQ
What is the maximum I²C clock frequency supported by the AT24C16A-10TU-2.7-T?
The AT24C16A-10TU-2.7-T supports up to 400 kHz I²C clock frequency when operated at VCC ≥ 2.7V. At lower voltages (e.g., 1.8V variants), the maximum is 100 kHz. This timing is defined in Table 5 of the official datasheet and verified under load conditions with CL = 100 pF.
Does the AT24C16A-10TU-2.7-T require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C16A-10TU-2.7-T requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 1.8 kΩ to 10 kΩ depending on bus capacitance and desired rise time; 4.7 kΩ is commonly used for 400 kHz operation with ≤400 pF total capacitance.
Can the AT24C16A-10TU-2.7-T be used in a multi-device I²C bus configuration?
No - the AT24C16A-10TU-2.7-T does not use A0–A2 pins for device addressing; these are NC. All three bits are reserved for memory page addressing, resulting in a fixed 7-bit I²C address (1010xxx). Thus, only one AT24C16A-10TU-2.7-T can reside on a given I²C bus segment.
What is the purpose of the WP pin on the AT24C16A-10TU-2.7-T, and how should it be connected?
The WP (Write Protect) pin on the AT24C16A-10TU-2.7-T disables all write operations when pulled high to VCC, protecting the entire 16K-bit array. For normal read/write operation, WP must be connected to GND. Leaving WP floating is not recommended due to potential noise-induced partial protection.
Is the AT24C16A-10TU-2.7-T RoHS-compliant and lead-free?
Yes, the "U" suffix in AT24C16A-10TU-2.7-T indicates Green Package + RoHS compliance, including lead-free terminations and halogen-free molding compound. This is confirmed in the Ordering Information section (page 17) and Packaging Notes of the datasheet.
AT24C16A-10TU-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:
- 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-TSSOP
AT24C16A-10TU-2.7-T FAQ
1.How can I place an order for AT24C16A-10TU-2.7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16A-10TU-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 AT24C16A-10TU-2.7-T reliable?
The price and inventory of AT24C16A-10TU-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 AT24C16A-10TU-2.7-T is usually 5 days.
3.What payment methods are accepted for AT24C16A-10TU-2.7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16A-10TU-2.7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16A-10TU-2.7-T?
AT24C16A-10TU-2.7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16A-10TU-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 AT24C16A-10TU-2.7-T?
For technical support, including AT24C16A-10TU-2.7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16A-10TU-2.7-T requirements.
6.How does Aetrix verify that AT24C16A-10TU-2.7-T is sourced from the original manufacturer or authorized distributors?
All AT24C16A-10TU-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 AT24C16A-10TU-2.7-T meets industry standards.
7.What is the process for return or replacement of AT24C16A-10TU-2.7-T?
All AT24C16A-10TU-2.7-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16A-10TU-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 AT24C16A-10TU-2.7-T part is unused and in its original packaging.
Return procedure for AT24C16A-10TU-2.7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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