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Microchip Technology AT24C16N-10SI-2.5
- Part No.:
- AT24C16N-10SI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT24C16N-10SI-2.5.pdf
- Description:
- IC EEPROM 16KBIT I2C 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,487
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Product details
Overview
AT24C16N-10SI-2.5 from Microchip Technology (formerly Atmel) is a 16-Kbit (2048 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 2.5V to 5.5V, supports 100 kHz I²C bus timing, features hardware write protection via the WP pin, and delivers 1 million write cycles with 100-year data retention. It is used in industrial sensor calibration storage and firmware parameter backup.
For engineers reviewing the AT24C16N-10SI-2.5 datasheet, AT24C16N-10SI-2.5 pinout, AT24C16N-10SI-2.5 application, or AT24C16N-10SI-2.5 equivalent, key selection criteria include its 2.5V minimum supply, 16-byte page write capability, SOIC-8 package, industrial temperature range (–40°C to +85°C), and compatibility with standard I²C controllers requiring noise-immune Schmitt-trigger inputs.
Technical Context
The AT24C16N-10SI-2.5 implements a fixed 16K-bit memory array organized as 128 pages of 16 bytes each, requiring an 11-bit data word address. Unlike smaller family members, it does not use A0–A2 pins for device addressing - all three are no-connects, limiting bus topology to one device per I²C segment.
Its I²C interface uses open-drain SDA/SCL with internal Schmitt-trigger inputs and noise filtering, enabling reliable operation in electrically noisy environments. Write operations are self-timed (max 10 ms), and acknowledge polling is supported to detect write completion without fixed delays.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8 bits), organized as 128 pages × 16 bytes - enables efficient block-level parameter storage with minimal address overhead. |
| Supply Voltage Range | 2.5V to 5.5V - supports direct interfacing with 2.5V/3.3V microcontrollers without level shifting. |
| I²C Clock Frequency | 100 kHz max at 2.5V - ensures timing compliance in low-power, noise-sensitive industrial control applications. |
| Page Write Capacity | 16-byte page writes - reduces I²C transaction count by up to 15× versus byte-write for contiguous data updates. |
| Write Endurance | 1 million write cycles - guarantees long-term reliability in field-updatable systems such as smart metering and PLC configuration storage. |
| Data Retention | 100 years at +25°C - meets archival requirements for calibration constants and security keys in unattended equipment. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade deployment in motor drives, HVAC controllers, and factory automation nodes. |
Pinout & Package
AT24C16N-10SI-2.5 is housed in an 8-lead JEDEC-standard SOIC package (8S1), 3.9mm × 4.9mm body, 1.27mm lead pitch, gull-wing leads. Pin 1 marked with notch or bevel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | No-connect (NC) | All three address pins are unused - eliminates external pull-up/down resistors and simplifies PCB layout for single-device I²C buses. |
| SDA | Serial Data I/O | Open-drain bidirectional line - requires external pull-up resistor; supports wire-OR with other I²C devices on same bus. |
| SCL | Serial Clock Input | Input-only clock line - synchronizes all data transfers; Schmitt-trigger input rejects sub-100 ns noise pulses. |
| WP | Write Protect Control | Hardware-enabled lock: tied to VCC to disable all writes (full-array protection), tied to GND for normal read/write access. |
| VCC | Power Supply | 2.5V–5.5V logic supply - powers internal charge pump for EEPROM programming; decoupling capacitor required near pin. |
| GND | Ground Reference | Signal and power return path - must be low-impedance connection to minimize ground bounce during write cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation down to 2.5V | Enables direct integration with 2.5V FPGA I/O banks and ultra-low-power MCUs without voltage translation circuitry. |
| 16-byte page write mode | Reduces firmware update time by minimizing I²C START/STOP overhead - critical for real-time systems with tight boot-time budgets. |
| Schmitt-trigger, filtered inputs | Rejects EMI-induced glitches on SDA/SCL lines in motor-drive or switching-power-supply environments without external RC filters. |
| Hardware write protection (WP pin) | Prevents accidental overwrites during brown-out conditions or software faults - essential for preserving factory calibration data. |
| 100-year data retention | Eliminates need for periodic refresh or battery-backed SRAM in maintenance-free deployments like utility metering infrastructure. |
Applications
| Industrial Sensor Calibration | PLC Configuration Storage |
|---|---|
|
Use Scenario: Storing temperature, pressure, and offset compensation coefficients in factory-calibrated sensors deployed in harsh environments. IC Role / Device Role / Timing Role: Nonvolatile parameter repository accessed during power-on initialization and runtime correction routines. Use Value: Maintains traceable calibration across 10+ years of field operation without battery or external backup power. |
Use Scenario: Holding user-defined I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent configuration store updated only during commissioning or maintenance; read at startup. Use Value: Enables zero-downtime reconfiguration via HMI without firmware reload or controller reset. |
| Smart Energy Meter Firmware | Medical Device Settings Backup |
|
Use Scenario: Storing tariff schedules, billing counters, and cryptographic keys in ANSI C12.22-compliant electricity meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory for regulatory-critical data with write-lock enforcement. Use Value: Meets ANSI/IEEE 1373 and IEC 62056 requirements for data integrity and 20-year service life. |
Use Scenario: Preserving user-adjusted therapy parameters (e.g., infusion rate, alarm limits) in portable infusion pumps. IC Role / Device Role / Timing Role: Fail-safe settings vault that retains values across battery swaps and cold starts. Use Value: Ensures continuity of care and eliminates re-entry errors during clinical handover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16D-SSHM-T | Same 16K-bit capacity, SOIC-8, 2.5V–5.5V, but rated for extended temp (–40°C to +125°C); no WP pin. | Lacks hardware write protection - unsuitable where field firmware updates must be prevented during operation. | Select when operating ambient exceeds +85°C and write protection is managed in software or system-level. |
| BR24G16NUX-10 | Rohm 16K-bit I²C EEPROM, SOIC-8, 1.7V–5.5V, 400 kHz @ 5V, WP pin present, but standby current higher (1 µA vs. 4 µA at 2.5V). | Higher ICC in standby - increases total system quiescent power in battery-powered edge nodes. | Choose if broader voltage range (1.7V) or faster 400 kHz operation at 5V is prioritized over ultra-low standby current. |
Compared with AT24C16N-10SI-2.5, AT24C16D-SSHM-T trades WP functionality for extended temperature rating, while BR24G16NUX-10 offers wider voltage support and higher speed at 5V but consumes more power in sleep - making AT24C16N-10SI-2.5 optimal for cost-sensitive, industrial-temp, low-quiescent-power designs.
Availability
AT24C16N-10SI-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, PLC configuration storage, and smart energy meter firmware requiring stable component supply across multi-year production cycles.
Supply support for AT24C16N-10SI-2.5 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, and memory solutions, with deep expertise in embedded control and nonvolatile data storage.
The AT24C16N-10SI-2.5 belongs to Microchip's legacy AT24C serial EEPROM product line, designed specifically for robust, low-power, I²C-based parameter and configuration storage in industrial, automotive, and medical electronics.
FAQ
What is the maximum I²C clock frequency supported by the AT24C16N-10SI-2.5?
The AT24C16N-10SI-2.5 supports up to 100 kHz I²C clock frequency when operated at 2.5V. This is specified in the AC Characteristics table under fSCL for 2.5V/2.7V/1.8V versions. At 5.0V, the device supports 400 kHz, but AT24C16N-10SI-2.5 is a 2.5V-minimum variant and must be used within its rated voltage range - thus 100 kHz is its guaranteed maximum bus speed.
Does the AT24C16N-10SI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C16N-10SI-2.5 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. The typical value ranges from 1.8 kΩ to 10 kΩ depending on bus capacitance and desired rise time; AT24C16N-10SI-2.5 datasheet recommends 4.7 kΩ for standard-mode operation at 100 kHz.
Can the AT24C16N-10SI-2.5 be used in a multi-device I²C bus configuration?
No - the AT24C16N-10SI-2.5 has no functional device address pins (A0–A2 are NC), so only one AT24C16N-10SI-2.5 can reside on a given I²C bus. To support multiple 16K EEPROMs, use variants with address pins (e.g., AT24C16-10PI-2.5 with A0/A1/A2) or select different density parts with distinct base addresses.
What is the purpose of the WP pin on the AT24C16N-10SI-2.5?
The WP (Write Protect) pin on the AT24C16N-10SI-2.5 provides hardware-level write inhibition: when pulled high to VCC, it disables all write operations to the entire memory array. When grounded, full read/write access is enabled. This prevents unintended overwrites during power transients or software crashes - a critical safeguard for calibration data stored in AT24C16N-10SI-2.5.
How many write cycles can the AT24C16N-10SI-2.5 endure before failure?
The AT24C16N-10SI-2.5 is rated for 1 million write cycles per memory location, as confirmed in the "High-reliability" section of its datasheet. This endurance applies to byte- and page-write operations under recommended operating conditions (2.5V–5.5V, –40°C to +85°C), and is validated across the full memory array - ensuring AT24C16N-10SI-2.5 remains viable for long-life industrial deployments.
AT24C16N-10SI-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 900 ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT24C16N-10SI-2.5 FAQ
1.How can I place an order for AT24C16N-10SI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16N-10SI-2.5 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 AT24C16N-10SI-2.5 reliable?
The price and inventory of AT24C16N-10SI-2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C16N-10SI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C16N-10SI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16N-10SI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16N-10SI-2.5?
AT24C16N-10SI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16N-10SI-2.5 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 AT24C16N-10SI-2.5?
For technical support, including AT24C16N-10SI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16N-10SI-2.5 requirements.
6.How does Aetrix verify that AT24C16N-10SI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C16N-10SI-2.5 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 AT24C16N-10SI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C16N-10SI-2.5?
All AT24C16N-10SI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16N-10SI-2.5, 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 AT24C16N-10SI-2.5 part is unused and in its original packaging.
Return procedure for AT24C16N-10SI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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