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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology AT24C16AN-10SI-1.8

Name: AT24C16AN-10SI-1.8
Brand: Microchip Technology
SKU: AT24C16AN-10SI-1.8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C16AN-10SI-1.8

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: AT24C16AN-10SI-1.8.pdf

Description:: IC EEPROM 16KBIT I2C 8SOIC

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Product details

Overview

AT24C16AN-10SI-1.8 from Microchip Technology (formerly Atmel) is a 16 Kbit (2048 × 8) I²C-compatible serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8 V to 5.5 V, supports 100 kHz clock rate at 1.8 V, features hardware write protection via WP pin, and delivers 1 million write cycles with 100-year data retention - used in firmware parameter storage, calibration data logging, and configuration backup in industrial controllers.

For engineers reviewing the AT24C16AN-10SI-1.8 datasheet, AT24C16AN-10SI-1.8 pinout, AT24C16AN-10SI-1.8 application, or AT24C16AN-10SI-1.8 equivalent, key selection factors include its 1.8 V minimum supply, 128-page × 16-byte architecture, SOIC-8 package compatibility, and absence of A0–A2 address pins - critical for single-device I²C bus designs requiring guaranteed address uniqueness and low-power operation.

Technical Context

The AT24C16AN-10SI-1.8 implements a two-wire I²C interface with open-drain SDA/SCL, Schmitt-triggered inputs for noise immunity, and bi-directional data transfer protocol compliant with standard I²C timing. Its internal address counter enables current-address and sequential reads without re-sending the word address.

Unlike smaller family members (AT24C02A/04A/08A), the AT24C16AN-10SI-1.8 omits A0–A2 device address pins - limiting bus topology to one device per I²C segment - and uses 11-bit word addressing for full 2048-word access. Write protection is enforced via WP pin tied to VCC, locking the entire 16K array against writes.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	16 Kbit (2048 × 8 bits), organized as 128 pages of 16 bytes - enables efficient page-write bursts without address rollover within page boundaries.
Supply Voltage Range	1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic families and mixed-voltage systems without level shifters.
I²C Clock Rate	100 kHz maximum at 1.8 V - ensures reliable timing margin under low-VCC conditions; not rated for 400 kHz below 2.5 V.
Write Cycle Time	5 ms maximum self-timed write - defines minimum interval between write commands; no external delay required but blocks I²C traffic during execution.
Endurance & Retention	1,000,000 write cycles / 100 years data retention - validated for long-life applications such as metering, medical devices, and automotive ECUs.
Operating Temperature	−40°C to +85°C - qualified for industrial-grade deployment in programmable logic controllers and factory automation equipment.
Package	8-lead JEDEC SOIC (8S1), 0.150" wide - compatible with standard surface-mount assembly processes and legacy PCB footprints.

Pinout & Package

AT24C16AN-10SI-1.8 is housed in an 8-lead JEDEC SOIC (8S1) package, 0.150" body width, with gull-wing leads and standard 1.27 mm pitch. Pin 1 is marked by a notch or bevel on the top surface.

Pin/Terminal	Circuit Role	Design Meaning
A0, A1, A2	No-connect (NC)	Internally unconnected; must be left floating or tied to GND/VCC - no device addressing capability; enforces single-device-per-bus constraint.
GND	Ground reference	Return path for VCC and I/O; requires low-impedance connection to system ground plane to maintain noise immunity.
VCC	Power supply input	Accepts 1.8–5.5 V; decoupling capacitor (0.1 µF ceramic) required within 1 cm for stable 100 kHz I²C operation.
WP	Write Protect control	Active-high hardware lock: tied to VCC disables all writes to entire 16K array; tied to GND enables normal read/write.
SCL	Serial Clock input	Positive-edge sampled clock; open-drain compatible; requires external pull-up (typically 2.2–10 kΩ) to same VCC domain.
SDA	Serial Data bidirectional I/O	Open-drain output/input; shared across multiple I²C devices; pull-up resistor mandatory; supports wire-OR logic.

Key Features

Feature	Design Value
1.8 V operation support	Guaranteed functionality down to 1.8 V supply - eliminates need for voltage translators when interfacing with ultra-low-power MCUs (e.g., ARM Cortex-M0+).
Hardware write protection	WP pin disables writes to full 16K memory array when asserted - prevents accidental firmware corruption during power transitions or software faults.
16-byte page write mode	Enables burst programming of up to 16 bytes per I²C transaction - reduces bus overhead by 87% vs. byte-wise writes for block updates.
Schmitt-trigger inputs	Filters noise on SCL/SDA lines with hysteresis - improves robustness in electrically noisy environments like motor drives and industrial PLCs.
100-year data retention	Validated nonvolatile storage lifetime at 85°C - suitable for sealed, maintenance-free applications including smart utility meters and aerospace subsystems.

Applications

Industrial Sensor Calibration	Embedded System Configuration
Use Scenario: Storing temperature-compensation coefficients and sensor offset values in a factory-floor pressure transducer. IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-on via I²C; retains values across cold starts and brownouts. Use Value: Eliminates recalibration after firmware updates; leverages 1.8 V operation to match sensor signal chain voltage rails.	Use Scenario: Holding user-defined network settings (IP, subnet, gateway) in a DIN-rail Ethernet I/O module. IC Role / Device Role / Timing Role: Configuration backup memory updated only during setup; read at boot to initialize TCP/IP stack. Use Value: Ensures settings persist through 100K+ power cycles; WP pin prevents overwrite during network stack initialization errors.
Medical Device Audit Logs	Automotive Body Control Module
Use Scenario: Recording timestamped usage events (e.g., sterilization cycles, door openings) in a portable infusion pump. IC Role / Device Role / Timing Role: Sequential write buffer for time-stamped records; accessed via interrupt-driven I²C writes. Use Value: Meets IEC 62304 data integrity requirements; 1M endurance supports >10 years of daily logging at 300 entries/day.	Use Scenario: Storing seat position presets and mirror adjustment profiles in a vehicle power seat ECU. IC Role / Device Role / Timing Role: Persistent user preference storage; written during "save" button press, read at ignition-on. Use Value: −40°C to +85°C rating ensures reliability in under-hood thermal cycling; SOIC-8 footprint simplifies layout in space-constrained modules.

Industrial Sensor Calibration

Embedded System Configuration

Use Scenario: Storing temperature-compensation coefficients and sensor offset values in a factory-floor pressure transducer.

IC Role / Device Role / Timing Role: Nonvolatile parameter storage accessed at power-on via I²C; retains values across cold starts and brownouts.

Use Value: Eliminates recalibration after firmware updates; leverages 1.8 V operation to match sensor signal chain voltage rails.

Use Scenario: Holding user-defined network settings (IP, subnet, gateway) in a DIN-rail Ethernet I/O module.

IC Role / Device Role / Timing Role: Configuration backup memory updated only during setup; read at boot to initialize TCP/IP stack.

Use Value: Ensures settings persist through 100K+ power cycles; WP pin prevents overwrite during network stack initialization errors.

Medical Device Audit Logs

Automotive Body Control Module

Use Scenario: Recording timestamped usage events (e.g., sterilization cycles, door openings) in a portable infusion pump.

IC Role / Device Role / Timing Role: Sequential write buffer for time-stamped records; accessed via interrupt-driven I²C writes.

Use Value: Meets IEC 62304 data integrity requirements; 1M endurance supports >10 years of daily logging at 300 entries/day.

Use Scenario: Storing seat position presets and mirror adjustment profiles in a vehicle power seat ECU.

IC Role / Device Role / Timing Role: Persistent user preference storage; written during "save" button press, read at ignition-on.

Use Value: −40°C to +85°C rating ensures reliability in under-hood thermal cycling; SOIC-8 footprint simplifies layout in space-constrained modules.

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial EEPROM applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STMicroelectronics M24C16-WMN6TP	Same 16 Kbit size, 1.8–5.5 V, SOIC-8, but supports 400 kHz at 2.5 V+; lacks WP pin - relies on software write protection.	Requires MCU firmware to manage write locks; unsuitable where hardware-level tamper resistance is mandated (e.g., medical audit logs).	Select when higher-speed I²C (≥400 kHz) is needed above 2.5 V and hardware WP is not required.
ON Semiconductor CAT24C16WI-GT3	Identical 16 Kbit, 1.8–5.5 V, SOIC-8, 100 kHz @ 1.8 V, and WP pin; rated for −40°C to +125°C extended temp range.	Validated for under-hood automotive use; higher max temperature enables placement near power stages without derating.	Select for AEC-Q100-compliant designs or applications requiring operation beyond 85°C ambient.

Compared with AT24C16AN-10SI-1.8, M24C16-WMN6TP trades hardware write protection for higher speed above 2.5 V, while CAT24C16WI-GT3 extends temperature capability to +125°C without sacrificing pinout or 1.8 V functionality - making it ideal for thermally demanding automotive deployments.

Availability

AT24C16AN-10SI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded system configuration, medical device audit logs, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AT24C16AN-10SI-1.8 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 nonvolatile memory solutions, with a focus on reliability, longevity, and embedded system integration.

The AT24CxxA family - including AT24C16AN-10SI-1.8 - was designed for cost-sensitive, low-power applications requiring robust, field-updatable configuration storage in industrial, medical, and automotive systems.

FAQ

What is the maximum I²C clock frequency supported by AT24C16AN-10SI-1.8 at 1.8 V?

The AT24C16AN-10SI-1.8 supports a maximum clock frequency of 100 kHz when operating at 1.8 V. This is explicitly specified in the AC Characteristics table for the 1.8 V column. At higher supply voltages (≥2.5 V), it supports up to 400 kHz, but that rating does not apply to the AT24C16AN-10SI-1.8's 1.8 V operational mode. Designers must adhere to the 100 kHz limit to ensure timing compliance and data integrity.

Does AT24C16AN-10SI-1.8 require external pull-up resistors on SDA and SCL lines?

Yes, AT24C16AN-10SI-1.8 requires external pull-up resistors on both SDA and SCL lines because it uses open-drain outputs. The datasheet specifies typical values of 2.2 kΩ to 10 kΩ, depending on bus capacitance and desired rise time. Pull-ups must connect to the same VCC domain as the AT24C16AN-10SI-1.8 supply to avoid level-shifting issues and ensure proper I²C signaling.

Can AT24C16AN-10SI-1.8 be used on the same I²C bus as AT24C02A or AT24C08A devices?

No, AT24C16AN-10SI-1.8 cannot share an I²C bus with AT24C02A or AT24C08A devices if hardware address pins (A0–A2) are used for device selection. The AT24C16AN-10SI-1.8 has A0–A2 internally disconnected and responds only to the fixed 7-bit device address 1010000b (0x50), while AT24C02A/08A use those pins for addressing. Using them together requires isolating AT24C16AN-10SI-1.8 on its own bus segment or using software-managed arbitration.

What happens to the AT24C16AN-10SI-1.8 WP pin when left unconnected?

Leaving the WP pin unconnected on AT24C16AN-10SI-1.8 results in undefined behavior - it may float high due to internal leakage or noise, potentially enabling unintended write protection. The datasheet mandates explicit connection: tie WP to GND for full read/write access, or to VCC to lock the entire 16K array. A pull-down resistor (e.g., 10 kΩ to GND) is recommended if dynamic control is not required.

Is AT24C16AN-10SI-1.8 compatible with the older AT24C16A-10PI-1.8 in terms of pinout and electrical characteristics?

Yes, AT24C16AN-10SI-1.8 is functionally and pinout-compatible with AT24C16A-10PI-1.8. Both share identical memory organization (2048 × 8), 1.8–5.5 V operation, 100 kHz @ 1.8 V, WP functionality, and SOIC-8 (AT24C16AN-10SI-1.8) / PDIP-8 (AT24C16A-10PI-1.8) packages. The 'N' suffix denotes lead-free/halogen-free construction, and 'SI' specifies SOIC - no electrical or timing differences exist between the variants.

AT24C16AN-10SI-1.8 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:: 4.5 µs

Voltage - Supply:: 1.8V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

AT24C16AN-10SI-1.8 FAQ

1.How can I place an order for AT24C16AN-10SI-1.8 through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C16AN-10SI-1.8 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 AT24C16AN-10SI-1.8 reliable?

The price and inventory of AT24C16AN-10SI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C16AN-10SI-1.8 is usually 5 days.

3.What payment methods are accepted for AT24C16AN-10SI-1.8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16AN-10SI-1.8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C16AN-10SI-1.8?

AT24C16AN-10SI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C16AN-10SI-1.8 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 AT24C16AN-10SI-1.8?

For technical support, including AT24C16AN-10SI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16AN-10SI-1.8 requirements.

6.How does Aetrix verify that AT24C16AN-10SI-1.8 is sourced from the original manufacturer or authorized distributors?

All AT24C16AN-10SI-1.8 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 AT24C16AN-10SI-1.8 meets industry standards.

7.What is the process for return or replacement of AT24C16AN-10SI-1.8?

All AT24C16AN-10SI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16AN-10SI-1.8, 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 AT24C16AN-10SI-1.8 part is unused and in its original packaging.

Return procedure for AT24C16AN-10SI-1.8:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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