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Microchip Technology AT24C16-10PI
- Part No.:
- AT24C16-10PI
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
AT24C16-10PI.pdf
- Description:
- IC EEPROM 16KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,179
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Product details
Overview
AT24C16-10PI from Microchip Technology (formerly Atmel) is a 16-kbit I²C-compatible serial EEPROM organized as 2048 × 8 bits, operating from 2.7V to 5.5V, with 10 ms max write cycle time, 1 million write endurance, and 100-year data retention. It serves as nonvolatile configuration storage in industrial control modules requiring robust, low-power memory with hardware write protection.
For engineers reviewing the AT24C16-10PI datasheet, AT24C16-10PI pinout, AT24C16-10PI application, or AT24C16-10PI equivalent, key selection criteria include industrial temperature range (-40°C to +85°C), 100 kHz I²C speed at 2.7V, 8-pin PDIP/SOIC/TSSOP package compatibility, and WP pin-based hardware write protection for firmware parameter integrity.
Technical Context
The AT24C16-10PI implements a two-wire I²C interface with Schmitt-triggered, noise-filtered SDA and SCL inputs, supporting standard-mode (100 kHz) operation at 2.7V–5.5V supply. Its internal architecture uses 128 pages of 16 bytes each, with an 11-bit word address space and automatic page boundary rollover during sequential writes.
Unlike smaller family members, the AT24C16-10PI disables A0–A2 address pins (NC), limiting bus addressing to a single device per I²C segment; write protection is controlled solely by the WP pin tied to VCC or GND, enabling full-array lockout without software intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16 kbit (2048 × 8), sufficient for storing bootloader config, calibration tables, or device identity data |
| Supply Voltage Range | 2.7V to 5.5V - supports mixed-voltage systems including 3.3V microcontrollers and legacy 5V peripherals |
| I²C Clock Frequency | 100 kHz max at 2.7V - ensures reliable timing margin in electrically noisy industrial environments |
| Write Cycle Time | 10 ms maximum - defines minimum interval between successive byte/page writes; impacts firmware update latency |
| Endurance | 1 million write cycles - enables daily reconfiguration over 27 years without wear-out failure |
| Data Retention | 100 years at +25°C - guarantees long-term storage of critical calibration or security keys without refresh |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade deployment in programmable logic controllers and motor drives |
Pinout & Package
AT24C16-10PI is available in three industry-standard 8-pin packages: 8P3 (PDIP), 8S1 (JEDEC SOIC), and 8T (TSSOP). All variants share identical pin mapping and function assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Device Address Inputs | No-connect (NC) - unused in AT24C16; eliminates external pull-up/down resistors and simplifies PCB routing |
| SDA | Serial Data I/O | Open-drain bidirectional line - requires external pull-up resistor; supports multi-master I²C bus sharing |
| SCL | Serial Clock Input | Input-only clock line - synchronizes all read/write transfers; filtered for EMI resilience |
| WP | Write Protect Control | Hardware-enforced lock - full-array write disable when pulled high, enabling safe field firmware reads |
| VCC | Power Supply | Primary voltage rail - powers internal logic and memory array; decoupling capacitor required per layout guidelines |
| GND | Ground Reference | Signal and power return path - must be low-impedance connection to minimize noise coupling into SDA/SCL |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write mode | Reduces firmware update time by up to 15× vs. byte-write - critical for rapid parameter loading in test equipment |
| Schmitt-triggered inputs | Rejects sub-50 ns noise spikes on SDA/SCL - eliminates spurious start/stop detection in factory-floor EMI |
| Hardware write protection (WP) | Prevents accidental overwrites during power brownouts or reset glitches - essential for safety-critical settings |
| 100-year data retention | Eliminates need for periodic refresh or backup power - reduces BOM cost in battery-free IoT edge nodes |
| Industrial temperature grade | Validated operation across -40°C to +85°C - enables direct mounting on heatsinks in motor drive inverters |
Applications
| Industrial PLC Configuration Storage | Medical Device Calibration Memory |
|---|---|
Use Scenario: Storing I/O mapping, PID tuning parameters, and alarm thresholds in programmable logic controllers deployed in manufacturing cells. IC Role / Device Role / Timing Role: Nonvolatile configuration register - retains settings across AC power loss and cold restarts without supercapacitor support. Use Value: Enables zero-downtime commissioning via field-programmable parameter sets, reducing maintenance labor by eliminating EEPROM reprogramming jigs. | Use Scenario: Holding sensor offset/gain coefficients and regulatory audit logs in portable ultrasound and infusion pump controllers. IC Role / Device Role / Timing Role: Secure calibration vault - WP pin hardwired to system enable signal to prevent runtime corruption during clinical use. Use Value: Meets IEC 62304 Class C software requirements for persistent data integrity, avoiding costly re-certification after memory failure. |
| Automotive Body Control Module (BCM) | Smart Energy Meter Firmware Settings |
Use Scenario: Saving seat/mirror position profiles, lighting presets, and door lock configurations in 12V automotive BCMs. IC Role / Device Role / Timing Role: Low-voltage EEPROM - operates down to 2.7V during cranking transients while maintaining I²C communication with MCU. Use Value: Prevents user preference loss during engine start, improving perceived vehicle quality and reducing warranty claims. | Use Scenario: Storing tariff schedules, meter ID, and tamper-event timestamps in ANSI C12.20-compliant smart electricity meters. IC Role / Device Role / Timing Role: Tamper-resistant parameter store - WP pin asserted during firmware boot to block unauthorized configuration changes. Use Value: Supports ANSI/IEEE cryptographic key storage with hardware-level write lock, satisfying utility anti-tampering mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C16-10PU | Same die, PDIP package only; no SOIC/TSSOP variants; identical electrical specs and timing | Limited to through-hole assembly; unsuitable for surface-mount production lines | Select when legacy through-hole prototyping or repair replacement is required |
| M95128-DRMN6TP/K | 128-kbit SPI interface, 5ms write cycle, 40 MHz max clock; different protocol and pinout | Requires SPI-capable MCU GPIO; incompatible with I²C-only host designs | Choose only if migrating to higher-density SPI EEPROM and redesigning firmware interface layer |
Compared with AT24C16-10PU and M95128-DRMN6TP/K, the AT24C16-10PI offers verified industrial-temperature I²C compatibility in all three package types, enabling drop-in replacement in existing SOIC/TSSOP layouts without signal integrity or timing revalidation.
Availability
AT24C16-10PI is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive body electronics requiring stable component supply across extended product lifecycles.
Supply support for AT24C16-10PI 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 devices, and memory solutions, with broad industrial and automotive qualification programs.
The AT24C16-10PI belongs to Microchip's AT24Cxx serial EEPROM product line, designed specifically for reliable, low-power nonvolatile storage in resource-constrained embedded systems where I²C bus simplicity and hardware write protection are mandatory.
FAQ
What is the maximum I²C clock frequency supported by the AT24C16-10PI at 2.7V?
The AT24C16-10PI supports up to 100 kHz I²C clock frequency when operated at 2.7V. This is specified in the AC Characteristics table under fSCL for 2.7-/2.5-/1.8-volt operation. The device does not support 400 kHz at 2.7V - that speed is only guaranteed at 5.0V (4.5V–5.5V) operation. Designers must configure their MCU's I²C peripheral accordingly to avoid communication timeouts or NACK responses.
How does the Write Protect (WP) pin function on the AT24C16-10PI?
On the AT24C16-10PI, the WP pin provides hardware-level write protection: when pulled high to VCC, it disables all write operations to the entire 16-kbit memory array, allowing only read access; when grounded, normal read/write functionality is restored. Unlike some EEPROMs, the AT24C16-10PI does not support partial-array protection - the WP pin always locks the full memory space, ensuring complete firmware parameter integrity during field service.
Is the AT24C16-10PI pin-compatible with other AT24Cxx family members like AT24C02 or AT24C08?
The AT24C16-10PI shares the same 8-pin SOIC, PDIP, and TSSOP footprints and pin assignments (A0–A2, SDA, SCL, WP, VCC, GND) with AT24C02 and AT24C08, making it physically pin-compatible. However, A0–A2 are NC on AT24C16-10PI but functional on smaller variants - so while PCB layout is interchangeable, firmware must account for the absence of device addressing and full 16-kbit memory map.
What is the endurance rating of the AT24C16-10PI, and how is it tested?
The AT24C16-10PI is rated for 1 million write cycles per memory location, validated per JEDEC JESD22-A117 stress testing methodology at 25°C and 5.0V. This endurance applies to both byte and page write modes. Real-world field reliability exceeds this spec due to wear-leveling implemented in host firmware; however, the datasheet guarantee assumes worst-case sequential writes to the same address without intervening reads or erases.
Does the AT24C16-10PI require external pull-up resistors on SDA and SCL lines?
Yes, the AT24C16-10PI requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. Typical values range from 1.8 kΩ (for 400 kHz, short traces) to 10 kΩ (for 100 kHz, longer buses); exact values depend on bus capacitance, supply voltage, and desired rise time. Failure to install pull-ups will result in nonfunctional I²C communication, as neither line can drive high without them.
AT24C16-10PI 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
AT24C16-10PI FAQ
1.How can I place an order for AT24C16-10PI through Aetrix?
Please submit a Request for Quotation (RFQ) for AT24C16-10PI 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 reliable?
The price and inventory of AT24C16-10PI 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 is usually 5 days.
3.What payment methods are accepted for AT24C16-10PI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16-10PI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT24C16-10PI?
AT24C16-10PI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT24C16-10PI 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?
For technical support, including AT24C16-10PI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16-10PI requirements.
6.How does Aetrix verify that AT24C16-10PI is sourced from the original manufacturer or authorized distributors?
All AT24C16-10PI 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 meets industry standards.
7.What is the process for return or replacement of AT24C16-10PI?
All AT24C16-10PI units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16-10PI, 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 part is unused and in its original packaging.
Return procedure for AT24C16-10PI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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