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Microchip Technology AT24C16-10PC-2.5
- Part No.:
- AT24C16-10PC-2.5
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C16-10PC-2.5.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,199
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Product details
Overview
AT24C16-10PC-2.5 from Microchip Technology (formerly Atmel) is a 16 Kbit (2048 × 8) serial EEPROM with I²C-compatible 2-wire interface, operating from 2.5V to 5.5V, featuring 10 ms max self-timed write cycle, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in embedded controllers, power management units, and sensor calibration modules.
For engineers reviewing the AT24C16-10PC-2.5 datasheet, AT24C16-10PC-2.5 pinout, AT24C16-10PC-2.5 application, or AT24C16-10PC-2.5 equivalent, key selection criteria include low-voltage operation down to 2.5V, 16-byte page write capability, hardware write protection via WP pin, Schmitt-trigger inputs for noise immunity, and compatibility with standard 100 kHz I²C timing at 2.5V.
Technical Context
The AT24C16-10PC-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-those pins are NC, limiting bus topology to one device per I²C segment.
It supports bi-directional I²C communication with open-drain SDA and active-high SCL, includes internal Schmitt-trigger inputs on all control pins, and enforces strict timing compliance: tLOW ≥ 4.7 µs and fSCL ≤ 100 kHz under 2.5V operation. Write protection is asserted when WP = VCC, disabling all write operations across the full memory array.
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 Range | 2.5V to 5.5V - supports direct interfacing with 2.5V/3.3V microcontrollers and mixed-voltage systems without level shifters. |
| I²C Clock Frequency | 100 kHz max at 2.5V - ensures reliable timing margin in low-power industrial nodes with RC-filtered bus lines. |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive write commands; requires polling or timeout handling in host firmware. |
| Endurance & Retention | 1 million write cycles / 100 years data retention - qualifies for long-life field deployments in metering, automotive body control, and medical devices. |
| Write Protect Function | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up/down transients or firmware glitches. |
| Input Noise Immunity | Schmitt-trigger inputs on SDA, SCL, WP - suppresses ringing and EMI-induced false edges on noisy PCB layouts or long traces. |
Pinout & Package
AT24C16-10PC-2.5 is supplied in an 8-pin PDIP (package code 8P3), 0.300" wide, with 0.100" lead pitch. Pin 1 is marked by notch or dot; leads are tin-lead plated, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No Connect (NC) | Not bonded internally; must be left unconnected - eliminates address conflict risk in single-device I²C networks. |
| A1 | No Connect (NC) | Not bonded internally; no pull-up/down required - simplifies PCB layout and reduces BOM count. |
| A2 | No Connect (NC) | Not bonded internally; unused for device addressing - confirms single-device-per-bus constraint. |
| GND | Ground Reference | Return path for VCC and I/O; must connect to system analog/digital ground plane with low-impedance trace. |
| VCC | Power Supply | 2.5V–5.5V supply input; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm of pin. |
| WP | Write Protect Control | Active-high enable: tie to VCC to lock entire memory, or GND to allow read/write - used for factory programming lockout. |
| SCL | Serial Clock Input | Positive-edge sampled clock; open-drain compatible; requires external pull-up resistor (typically 2.2–10 kΩ). |
| SDA | Serial Data I/O | Bi-directional open-drain line; shares pull-up with SCL; must be wire-ORed only with other open-drain devices. |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte Page Write Mode | Enables burst writes up to 16 bytes within one I²C transaction - reduces protocol overhead and host CPU load vs. byte-by-byte writes. |
| No Device Address Pins (A0–A2) | Eliminates external address resistors and associated layout complexity - ideal for single-EEPROM designs like display module calibration storage. |
| 100-Year Data Retention | Guaranteed nonvolatile storage lifetime exceeds typical product service life - removes need for periodic refresh or backup power schemes. |
| 10 ms Max Self-Timed Write Cycle | Internal write completion detection frees host MCU from fixed delays - allows efficient polling or interrupt-driven status checking. |
| Schmitt-Trigger Inputs | Provides ≥0.8 V hysteresis on SDA/SCL/WP - tolerates slow-rising signals and bus noise without spurious start/stop detection. |
Applications
| Industrial Sensor Calibration | Consumer Appliance Configuration |
|---|---|
|
Use Scenario: Storing temperature compensation coefficients and factory calibration offsets in smart pressure sensors deployed in HVAC systems. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-on initialization via I²C; no real-time timing constraints. Use Value: Enables field-replaceable sensor modules with persistent calibration data across 10+ year lifetimes without battery backup. |
Use Scenario: Saving user preferences (e.g., cooking time, temperature presets) and error logs in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Low-power configuration memory written infrequently during UI interaction; reads occur at startup. Use Value: Survives repeated power cycling and brownouts; retains settings even after extended AC disconnection. |
| Medical Device Settings Storage | Embedded Power Management Unit |
|
Use Scenario: Holding safety-critical operational limits (e.g., max current, thermal thresholds) and usage history in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, write-protected memory accessed only during authorized service mode; WP pin hardwired to VCC. Use Value: Prevents unauthorized runtime modification of safety parameters while supporting traceable audit logs. |
Use Scenario: Storing dynamic voltage/frequency scaling tables and fault recovery profiles in DC-DC controller subsystems. IC Role / Device Role / Timing Role: Configuration register backup for PMICs; updated only during firmware updates or board reconfiguration. Use Value: Ensures consistent power sequencing behavior across cold starts and firmware upgrades without external NVM dependency. |
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, 2.5–5.5V, 20 MHz max clock, no WP pin - uses software write enable instead of hardware pin. | Requires SPI-capable MCU; lacks hardware write lock - unsuitable where physical tamper resistance is mandated. | Select when higher density and faster sequential reads are needed, and SPI interface is available. |
| BR24G16NUX-2.5 | 16 Kbit I²C EEPROM, 2.5–5.5V, 1 MHz max clock at 5V (400 kHz at 2.5V), same 8-pin TSSOP package but different pinout (A0/A1/A2 functional). | Supports up to 8 devices on one bus; requires address pin routing - adds flexibility but increases layout complexity. | Select when multi-device I²C topology is required and board space permits TSSOP footprint. |
Compared with M95128-WMN6TP and BR24G16NUX-2.5, the AT24C16-10PC-2.5 offers deterministic hardware write protection and simplified single-device integration, making it optimal for cost-sensitive, safety-aware designs where bus scalability is unnecessary.
Availability
AT24C16-10PC-2.5 is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer appliance configuration, medical device settings storage, and embedded power management unit applications requiring stable component supply across long production lifecycles.
Supply support for AT24C16-10PC-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 components, and memory solutions, with a focus on reliability, longevity, and industrial-grade qualification.
The AT24Cxx family was designed for robust, low-power nonvolatile data storage in resource-constrained embedded systems - emphasizing write endurance, wide voltage operation, and I²C interoperability across diverse MCU platforms.
FAQ
What is the maximum I²C clock frequency supported by AT24C16-10PC-2.5 at 2.5V?
The AT24C16-10PC-2.5 supports up to 100 kHz I²C clock frequency when operated at 2.5V, as specified in its AC characteristics table. This limit ensures timing margin for rise/fall times and noise immunity under low-voltage conditions. Exceeding this frequency may result in ACK failures or data corruption. The AT24C16-10PC-2.5 does not support 400 kHz operation below 4.5V.
Does AT24C16-10PC-2.5 require external pull-up resistors on SDA and SCL lines?
Yes, AT24C16-10PC-2.5 requires external pull-up resistors on both SDA and SCL lines because its I/O pins are open-drain. Typical values range from 2.2 kΩ to 10 kΩ depending on bus capacitance and speed requirements. The AT24C16-10PC-2.5 itself does not integrate internal pull-ups, so omission will prevent proper I²C communication.
Can AT24C16-10PC-2.5 be used in place of AT24C16-10PC without design changes?
Yes, AT24C16-10PC-2.5 is a direct voltage-range variant of AT24C16-10PC and shares identical pinout, timing, memory map, and functionality. The only difference is the guaranteed 2.5V–5.5V operation (vs. 4.5V–5.5V for the -10PC version). No PCB or firmware changes are needed when upgrading to AT24C16-10PC-2.5 for broader low-voltage compatibility.
What happens to the A0, A1, and A2 pins on AT24C16-10PC-2.5?
On AT24C16-10PC-2.5, the A0, A1, and A2 pins are No Connect (NC) - they are not bonded internally and serve no functional purpose. These pins must be left unconnected on the PCB; tying them to VCC, GND, or any logic level has no effect and may introduce unintended leakage paths. This design simplifies layout for single-device I²C buses.
How does the Write Protect (WP) pin function on AT24C16-10PC-2.5?
The WP pin on AT24C16-10PC-2.5 is active-high: when pulled to VCC, it disables all write operations (byte and page) across the entire 16 Kbit memory array, allowing only read access. When grounded, normal read/write operations are enabled. This hardware lock provides fail-safe protection against accidental writes during power transitions or firmware errors. The AT24C16-10PC-2.5 does not support partial-array protection.
AT24C16-10PC-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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C16-10PC-2.5 FAQ
1.How can I place an order for AT24C16-10PC-2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16-10PC-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 AT24C16-10PC-2.5 reliable?
The price and inventory of AT24C16-10PC-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 AT24C16-10PC-2.5 is usually 5 days.
3.What payment methods are accepted for AT24C16-10PC-2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16-10PC-2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16-10PC-2.5?
AT24C16-10PC-2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16-10PC-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 AT24C16-10PC-2.5?
For technical support, including AT24C16-10PC-2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16-10PC-2.5 requirements.
6.How does Aetrix verify that AT24C16-10PC-2.5 is sourced from the original manufacturer or authorized distributors?
All AT24C16-10PC-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 AT24C16-10PC-2.5 meets industry standards.
7.What is the process for return or replacement of AT24C16-10PC-2.5?
All AT24C16-10PC-2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16-10PC-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 AT24C16-10PC-2.5 part is unused and in its original packaging.
Return procedure for AT24C16-10PC-2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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