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Microchip Technology AT24C16-10PI-2.5
- Part No.:
- AT24C16-10PI-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C16-10PI-2.5.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,417
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Product details
Overview
AT24C16-10PI-2.5 from Microchip Technology (formerly Atmel) is a 16-kbit serial EEPROM IC used for nonvolatile data storage in embedded control and configuration systems. It operates from 2.5V to 5.5V, supports 100 kHz I²C bus speed at 2.5V, features 128 pages × 16 bytes page write capability, 1 million write cycles endurance, and 100-year data retention - deployed in industrial sensor nodes and power meter firmware storage.
For engineers reviewing the AT24C16-10PI-2.5 datasheet, AT24C16-10PI-2.5 pinout, AT24C16-10PI-2.5 application, or AT24C16-10PI-2.5 equivalent, key selection criteria include its industrial temperature range (–40°C to +85°C), 2.5V low-voltage operation, 16K-bit memory organization, hardware write protection via WP pin, and compatibility with standard 2-wire I²C interfaces in space-constrained SOIC/TSSOP/PDIP footprints.
Technical Context
The AT24C16-10PI-2.5 implements a standard two-wire (I²C-compatible) serial interface with open-drain SDA and Schmitt-triggered SCL inputs for noise immunity. Its internal architecture uses an 11-bit word address space across 2048 × 8-bit locations, with A0–A2 pins designated as no-connects - limiting bus addressing to a single device per I²C segment.
Write operations support both byte and 16-byte page modes, with self-timed internal write cycles completing in ≤10 ms. Standby current is 4 µA at 2.5V, and it includes hardware write protection via the WP pin, which disables all writes when pulled high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 Kbit (2048 × 8-bit), organized as 128 pages of 16 bytes each |
| Supply Voltage Range | 2.5V to 5.5V - enables direct interface with 2.5V logic and mixed-voltage systems |
| I²C Clock Frequency | 100 kHz max at 2.5V - defines maximum sustained write/read throughput under low-voltage operation |
| Write Endurance | 1 million cycles - supports frequent calibration or event-log updates in industrial logging applications |
| Data Retention | 100 years at +25°C - ensures long-term firmware parameter persistence without refresh |
| Operating Temperature | –40°C to +85°C - qualified for use in industrial automation and outdoor metering environments |
| Standby Current | 4 µA at VCC = 2.5V - minimizes quiescent power in battery-backed or energy-harvesting systems |
Pinout & Package
AT24C16-10PI-2.5 is supplied in an 8-lead JEDEC SOIC package (package code 8S1), measuring 3.99 mm × 4.98 mm × 1.73 mm, with standard gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or notch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect | Not bonded; must be left unconnected - eliminates device address ambiguity on I²C bus |
| A1 | No Connect | Not bonded; required for single-device-per-bus operation per datasheet |
| A2 | No Connect | Not bonded; confirms fixed 7-bit device address (1010xxx) with no user-selectable bits |
| GND | Ground Reference | Return path for VCC and signal logic; must be low-impedance for noise immunity |
| VCC | Power Supply | 2.5V–5.5V supply input; decoupling capacitor (0.1 µF) required near pin |
| WP | Write Protect Control | Active-high hardware lock: tied to VCC to disable all writes, GND to enable normal R/W |
| SCL | Serial Clock Input | Positive-edge clock for I²C transactions; includes Schmitt trigger for noise filtering |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up resistor (typically 4.7 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write mode | Enables efficient bulk configuration storage with reduced I²C transaction overhead vs. byte writes |
| Hardware write protection (WP pin) | Prevents accidental overwrites during power transients or firmware glitches without software intervention |
| 100-year data retention | Eliminates need for periodic data refresh in sealed or inaccessible deployments (e.g., utility meters) |
| Industrial temperature grade | Validated operation from –40°C to +85°C supports deployment in uncontrolled enclosures and outdoor electronics |
| Low 2.5V operating voltage | Direct compatibility with 2.5V microcontrollers and FPGAs, reducing level-shifting complexity |
Applications
| Smart Energy Metering | Industrial PLC Configuration Storage |
|---|---|
Use Scenario: Storing tariff tables, calibration coefficients, and tamper-event logs in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-history storage with infrequent writes and long-term read stability. Use Value: 100-year data retention ensures firmware parameters survive product lifetime without backup power or refresh. |
Use Scenario: Holding I/O mapping, PID tuning parameters, and firmware update flags in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter storage accessed during boot and runtime reconfiguration. Use Value: Hardware WP pin prevents corruption during brown-out conditions common in factory floor power environments. |
| Automotive Body Control Module (BCM) | Medical Diagnostic Equipment Calibration |
Use Scenario: Saving seat/mirror position presets and lighting profiles in 12V automotive systems with local 2.5V LDO regulation. IC Role / Device Role / Timing Role: Low-voltage EEPROM interfaced directly to 2.5V microcontroller I²C peripheral. Use Value: 2.5V operation avoids level shifters; industrial temp rating covers under-hood thermal cycling. |
Use Scenario: Storing sensor offset/gain calibration data and regulatory compliance timestamps in portable ultrasound units. IC Role / Device Role / Timing Role: Secure, long-life storage for traceable calibration records required by FDA/IEC 62304. Use Value: 1 million write cycles support daily recalibration without wear-out concerns over 10+ year device life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95128-WMN6TP | 128 Kbit SPI interface, 5V-only supply (4.5–5.5V), no WP pin | Requires SPI host interface and lacks hardware write protection | Select only if migrating from I²C to SPI and higher density is needed; not drop-in compatible |
| 24LC16B-I/P | Same 16 Kbit I²C EEPROM, but rated for 100 kHz only at 2.7V–5.5V; no 2.5V option | Cannot operate below 2.7V - unsuitable for 2.5V logic domains | Use only in 2.7V+ systems where AT24C16-10PI-2.5's 2.5V capability is unnecessary |
Compared with M95128-WMN6TP and 24LC16B-I/P, AT24C16-10PI-2.5 uniquely supports true 2.5V operation with hardware write protection and industrial temperature range - making it optimal for low-voltage, safety-critical, or thermally demanding embedded storage.
Availability
AT24C16-10PI-2.5 is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive BCMs, and medical calibration systems requiring stable component supply across extended temperature and low-voltage operation.
Supply support for AT24C16-10PI-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 acquired Atmel in 2016 and maintains full technical and manufacturing continuity for the AT24Cxx EEPROM family.
The AT24Cxx series was designed specifically for reliable, low-power, I²C-based nonvolatile storage in cost-sensitive industrial, automotive, and consumer control systems - emphasizing robustness, wide voltage operation, and long data retention.
FAQ
What is the maximum I²C clock frequency supported by AT24C16-10PI-2.5 at 2.5V?
The AT24C16-10PI-2.5 supports up to 100 kHz I²C clock frequency when operated at 2.5V, as specified in the AC Characteristics table. This is lower than its 400 kHz capability at 5.0V due to timing constraints at reduced supply voltage. The part remains fully compliant with standard I²C protocol timing requirements within this limit, and no external clock stretching is required for reliable communication.
Does AT24C16-10PI-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C16-10PI-2.5 requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. A typical value is 4.7 kΩ to VCC, though the exact value depends on bus capacitance and desired rise time. The internal circuitry does not include active pull-ups, so omission of external resistors will prevent proper I²C communication.
Can AT24C16-10PI-2.5 be used in place of AT24C16-10PI without changes to PCB layout?
Yes, AT24C16-10PI-2.5 is pin-compatible and footprint-compatible with AT24C16-10PI, as both share identical 8-lead SOIC packaging (8S1) and pinout. The only functional difference is the extended 2.5V–5.5V supply range of AT24C16-10PI-2.5 versus the 2.7V–5.5V range of AT24C16-10PI - making it a direct replacement in existing designs with 2.5V rails.
How does the WP pin function on AT24C16-10PI-2.5?
The WP (Write Protect) pin on AT24C16-10PI-2.5 is an active-high hardware lock. When pulled to VCC, it disables all write operations - including byte, page, and erase commands - while permitting unrestricted reads. When grounded, full read/write functionality is restored. This provides fail-safe protection against unintended writes during power-up, reset, or firmware errors.
What is the memory addressing scheme used by AT24C16-10PI-2.5?
AT24C16-10PI-2.5 uses an 11-bit internal word address to access its 2048 × 8-bit array. The device address is fixed at 1010xxx (7-bit), with A0–A2 pins designated as no-connects - meaning only one AT24C16-10PI-2.5 can reside on a given I²C bus. Addressing is sequential within pages (16 bytes), with automatic rollover at page boundaries during page writes.
AT24C16-10PI-2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C16-10PI-2.5 FAQ
1.How can I place an order for AT24C16-10PI-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16-10PI-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 AT24C16-10PI-2.5 reliable?
The price and inventory of AT24C16-10PI-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 AT24C16-10PI-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C16-10PI-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16-10PI-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16-10PI-2.5?
AT24C16-10PI-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16-10PI-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 AT24C16-10PI-2.5?
For technical support, including AT24C16-10PI-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16-10PI-2.5 requirements.
6.How does Aetrix verify that AT24C16-10PI-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C16-10PI-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 AT24C16-10PI-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C16-10PI-2.5?
All AT24C16-10PI-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16-10PI-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 AT24C16-10PI-2.5 part is unused and in its original packaging.
Return procedure for AT24C16-10PI-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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