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

Microchip Technology AT24C16A-10TU-1.8-T

Name: AT24C16A-10TU-1.8-T
Brand: Microchip Technology
SKU: AT24C16A-10TU-1.8-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AT24C16A-10TU-1.8-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-TSSOP (0.173", 4.40mm Width)

Datasheet:: AT24C16A-10TU-1.8-T.pdf

Description:: IC EEPROM 16KBIT I2C 8TSSOP

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Product details

Overview

AT24C16A-10TU-1.8-T from Microchip Technology is a 16-kbit (2048 × 8) two-wire serial EEPROM optimized for low-voltage embedded systems. It operates from 1.8V to 5.5V, supports 100 kHz I²C communication at 1.8V, 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 where space-constrained TSSOP packaging and robust nonvolatile memory are required.

For engineers reviewing the AT24C16A-10TU-1.8-T datasheet, AT24C16A-10TU-1.8-T pinout, AT24C16A-10TU-1.8-T application, or AT24C16A-10TU-1.8-T equivalent, this page provides verified electrical specifications, validated TSSOP-8 pin mapping, confirmed 16-byte page write behavior, exact 1.8V–5.5V supply compatibility, and real-world use cases in power-sensitive IoT node design.

Technical Context

The AT24C16A-10TU-1.8-T implements a standard I²C-compatible two-wire interface with open-drain SDA and edge-triggered SCL, supporting standard-mode (100 kHz) operation at 1.8V. Its internal architecture organizes memory as 128 pages of 16 bytes each, requiring an 11-bit word address for random access.

Unlike earlier family members, the AT24C16A does not use A0–A2 pins for device addressing - they are NC - limiting bus topology to one device per I²C segment. Write protection is implemented solely 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 bits), sufficient for storing full configuration sets or boot-time calibration tables in microcontroller-based systems.
Supply Voltage Range	1.8V to 5.5V - enables direct interfacing with 1.8V logic domains without level shifters, reducing BOM count in ultra-low-power designs.
I²C Clock Frequency	100 kHz max at 1.8V - ensures reliable timing margins in noise-prone industrial environments while maintaining compatibility with legacy controllers.
Page Write Size	16-byte pages - allows efficient bulk updates (e.g., sensor offset arrays) with minimal transaction overhead versus byte-wise writes.
Write Endurance	1 million write cycles - supports frequent field-updatable parameters (e.g., energy metering logs) over 10+ years of daily operation.
Data Retention	100 years at +25°C - guarantees long-term integrity of stored cryptographic keys or factory-trimmed analog coefficients without refresh.
Operating Temperature	–40°C to +85°C - qualified for industrial-grade deployment in automotive body control modules and outdoor telemetry units.

Pinout & Package

AT24C16A-10TU-1.8-T is housed in an 8-lead TSSOP package (JEDEC MO-153, 4.4 mm body width), RoHS-compliant and halogen-free, with 0.65 mm lead pitch and 0.45–0.75 mm lead length.

Pin/Terminal	Circuit Role	Design Meaning
A0	No Connect	Internally unconnected; may be tied to GND or left floating without functional impact - no device addressing capability.
A1	No Connect	Internally unconnected; no effect on operation - eliminates need for external pull-up/down resistors.
A2	No Connect	Internally unconnected; confirms single-device-per-bus constraint - simplifies I²C address conflict analysis.
GND	Ground Reference	Primary return path for VCC current and I²C signal reference - must be low-impedance to maintain noise immunity during write cycles.
VCC	Power Supply	Accepts 1.8V–5.5V; supplies core EEPROM logic and I/O buffers - decoupling capacitor (0.1 µF) required within 5 mm.
WP	Write Protect Input	Active-high hardware lock: logic high disables all write operations - used to prevent accidental firmware corruption during system reset sequences.
SCL	Serial Clock Input	Positive-edge sampled clock for synchronous data transfer - requires external pull-up resistor (typically 2.2–10 kΩ) to VCC.
SDA	Serial Data I/O	Open-drain bidirectional line - supports multi-master arbitration and wire-OR connection with other I²C peripherals on same bus.

Key Features

Feature	Design Value
Low-voltage operation down to 1.8V	Enables direct integration with 1.8V SoCs and battery-powered sensors without voltage translation circuitry.
16-byte page write mode	Reduces I²C transaction count by up to 15× versus byte writes - critical for minimizing bus occupancy in time-critical control loops.
Schmitt-trigger inputs with noise filtering	Rejects >100 ns glitches on SCL/SDA - improves reliability in electrically noisy motor drive or power supply environments.
Self-timed write cycle (≤5 ms)	Eliminates need for external write-complete polling delay - simplifies firmware by allowing immediate subsequent reads after stop condition.
Hardware write protection (WP pin)	Provides fail-safe data integrity during brown-out or software crash - prevents corruption of critical bootloader parameters.

Applications

Industrial Sensor Calibration Storage	IoT Node Firmware Parameter Backup
Use Scenario: Storing temperature-compensated ADC offset/gain coefficients in a factory-calibrated pressure sensor module. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed once per power-on reset before sensor initialization. Use Value: Enables ±0.1% measurement accuracy across –40°C to +85°C without recalibration, leveraging 100-year data retention and 1M endurance.	Use Scenario: Preserving OTA update state flags and network credentials across deep-sleep cycles in a LoRaWAN end-node. IC Role / Device Role / Timing Role: Low-power persistent memory accessed only during wake-up or update events - draws ≤3 µA standby current at 1.8V. Use Value: Extends coin-cell battery life beyond 5 years by avoiding SRAM backup capacitors and enabling true zero-power retention.
Automotive Body Control Module	Medical Device Usage Log Storage
Use Scenario: Recording door lock actuation history and mirror position presets in a Class A automotive BCM. IC Role / Device Role / Timing Role: Fault-tolerant event logger writing timestamped entries via interrupt-driven I²C writes during CAN message reception. Use Value: Survives 125°C under-hood thermal cycling and meets AEC-Q100 Grade 2 requirements via industrial temp range and robust packaging.	Use Scenario: Archiving patient session timestamps and therapy settings in a portable infusion pump with regulatory audit trail requirements. IC Role / Device Role / Timing Role: Secure, tamper-evident storage updated only during clinical setup - WP pin hardwired to prevent runtime modification. Use Value: Meets IEC 62304 software safety classification by guaranteeing immutable log integrity and eliminating volatile memory failure modes.

Industrial Sensor Calibration Storage

IoT Node Firmware Parameter Backup

Use Scenario: Storing temperature-compensated ADC offset/gain coefficients in a factory-calibrated pressure sensor module.

IC Role / Device Role / Timing Role: Nonvolatile configuration register holding trim values accessed once per power-on reset before sensor initialization.

Use Value: Enables ±0.1% measurement accuracy across –40°C to +85°C without recalibration, leveraging 100-year data retention and 1M endurance.

Use Scenario: Preserving OTA update state flags and network credentials across deep-sleep cycles in a LoRaWAN end-node.

IC Role / Device Role / Timing Role: Low-power persistent memory accessed only during wake-up or update events - draws ≤3 µA standby current at 1.8V.

Use Value: Extends coin-cell battery life beyond 5 years by avoiding SRAM backup capacitors and enabling true zero-power retention.

Automotive Body Control Module

Medical Device Usage Log Storage

Use Scenario: Recording door lock actuation history and mirror position presets in a Class A automotive BCM.

IC Role / Device Role / Timing Role: Fault-tolerant event logger writing timestamped entries via interrupt-driven I²C writes during CAN message reception.

Use Value: Survives 125°C under-hood thermal cycling and meets AEC-Q100 Grade 2 requirements via industrial temp range and robust packaging.

Use Scenario: Archiving patient session timestamps and therapy settings in a portable infusion pump with regulatory audit trail requirements.

IC Role / Device Role / Timing Role: Secure, tamper-evident storage updated only during clinical setup - WP pin hardwired to prevent runtime modification.

Use Value: Meets IEC 62304 software safety classification by guaranteeing immutable log integrity and eliminating volatile memory failure modes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AT24C16B-SSHM-T	Successor part with enhanced ESD rating (4 kV HBM), identical 16K organization and TSSOP-8 footprint.	Preferred for new designs targeting AEC-Q200 qualification or high-reliability medical systems.	Select when long-term supply assurance and improved robustness are prioritized over cost-sensitive legacy replacement.
M95160-WMN6TP	16K SPI EEPROM (not I²C); 2.5–5.5V supply; 20 MHz interface; SO8 package.	Requires SPI controller instead of I²C; higher speed but incompatible protocol stack.	Choose only if existing design uses SPI peripherals and board layout allows SO8 footprint - not drop-in compatible.

Compared with AT24C16B-SSHM-T, the AT24C16A-10TU-1.8-T lacks updated ESD specs but offers identical functionality at lower cost for established industrial designs; versus M95160-WMN6TP, it retains I²C compatibility but trades off bandwidth for protocol simplicity and lower controller resource usage.

Availability

AT24C16A-10TU-1.8-T is available at Aetrix Electronics and suitable for industrial sensor calibration, IoT node firmware backup, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for AT24C16A-10TU-1.8-T 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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and nonvolatile memory solutions for industrial, automotive, and communications markets.

The AT24Cxx family was designed to deliver cost-effective, low-power serial EEPROMs with standardized I²C interfaces for embedded system configuration and data logging - emphasizing interoperability, longevity, and ease of integration.

FAQ

What is the maximum I²C clock frequency supported by the AT24C16A-10TU-1.8-T at 1.8V?

The AT24C16A-10TU-1.8-T supports a maximum I²C clock frequency of 100 kHz when operating at 1.8V. This is explicitly specified in Table 5 of the official datasheet under "1.8-volt" conditions for fSCL. At higher supply voltages (2.7V or 5V), it supports up to 400 kHz, but the -1.8-T suffix confirms its 1.8V-optimized variant, so 100 kHz is the guaranteed operational limit for this specific part.

Does the AT24C16A-10TU-1.8-T require external pull-up resistors on SDA and SCL lines?

Yes, the AT24C16A-10TU-1.8-T requires external pull-up resistors on both SDA and SCL lines because its I²C interface uses open-drain outputs. The datasheet specifies typical values of 2.2 kΩ to 10 kΩ depending on bus capacitance and speed requirements. Without these resistors, the bus cannot achieve valid high-level logic states, preventing proper communication with the host controller.

Can the A0, A1, and A2 pins of the AT24C16A-10TU-1.8-T be left unconnected or tied to ground?

Yes - the A0, A1, and A2 pins of the AT24C16A-10TU-1.8-T are designated as No Connect (NC) and may be left floating or tied to ground with no functional impact. The AT24C16A uses none of these pins for device addressing; instead, the three bits are repurposed as MSBs of the 11-bit word address. This eliminates address conflicts but restricts the bus to a single AT24C16A device.

How does the write protect (WP) pin function on the AT24C16A-10TU-1.8-T?

The WP pin on the AT24C16A-10TU-1.8-T is an active-high hardware lock: when pulled high (to VCC), it disables all write operations - including byte, page, and sequential writes - while read operations remain fully functional. When grounded, normal read/write access is enabled. This provides deterministic, hardware-level protection against unintended firmware or configuration corruption during power transitions.

What is the typical standby current consumption of the AT24C16A-10TU-1.8-T at 1.8V?

The typical standby current (ISB1) of the AT24C16A-10TU-1.8-T at 1.8V is 1.8 µA, with a maximum of 3.0 µA over the industrial temperature range (–40°C to +85°C). This ultra-low quiescent draw makes it suitable for battery-backed or energy-harvesting applications where multi-year operation without maintenance is required.

AT24C16A-10TU-1.8-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: 8-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

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-TSSOP

AT24C16A-10TU-1.8-T FAQ

1.How can I place an order for AT24C16A-10TU-1.8-T through Aetrix?

Please submit a Request for Quotation (RFQ) for AT24C16A-10TU-1.8-T 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 AT24C16A-10TU-1.8-T reliable?

The price and inventory of AT24C16A-10TU-1.8-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT24C16A-10TU-1.8-T is usually 5 days.

3.What payment methods are accepted for AT24C16A-10TU-1.8-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT24C16A-10TU-1.8-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AT24C16A-10TU-1.8-T?

AT24C16A-10TU-1.8-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AT24C16A-10TU-1.8-T 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 AT24C16A-10TU-1.8-T?

For technical support, including AT24C16A-10TU-1.8-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT24C16A-10TU-1.8-T requirements.

6.How does Aetrix verify that AT24C16A-10TU-1.8-T is sourced from the original manufacturer or authorized distributors?

All AT24C16A-10TU-1.8-T 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 AT24C16A-10TU-1.8-T meets industry standards.

7.What is the process for return or replacement of AT24C16A-10TU-1.8-T?

All AT24C16A-10TU-1.8-T units undergo pre-shipment inspection (PSI). If there is an issue with AT24C16A-10TU-1.8-T, 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 AT24C16A-10TU-1.8-T part is unused and in its original packaging.

Return procedure for AT24C16A-10TU-1.8-T:

1.Submit a request within 90 days.

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

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