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

Microchip Technology 24LC014T-E/OT

Name: 24LC014T-E/OT
Brand: Microchip Technology
SKU: 24LC014T-E/OT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 24LC014T-E/OT

Manufacturer:: Microchip Technology

Category:: Memory

Package:: SOT-23-6

Datasheet:: 24LC014T-E/OT.pdf

Description:: IC EEPROM 1KBIT I2C SOT23-6

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Product details

Overview

24LC014T-E/OT from Microchip Technology Inc. is a 1 Kbit I²C-compatible serial EEPROM organized as 128 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz clock support and hardware write protection via the WP pin. It delivers 1 mA typical active current, 1 µA typical standby current, and supports up to eight devices on a single bus using A0–A2 address inputs. It is used in industrial control systems for storing calibration data, configuration settings, and firmware patch metadata.

For engineers reviewing the 24LC014T-E/OT datasheet, 24LC014T-E/OT pinout, 24LC014T-E/OT application, or 24LC014T-E/OT equivalent, this page provides verified electrical specs, package mapping (SOT-23-6), I²C timing compliance (100/400 kHz), endurance (1M cycles), and real-world use cases in automotive and industrial embedded systems.

Technical Context

The 24LC014T-E/OT implements a two-wire I²C interface with Schmitt-trigger inputs on SDA/SCL for noise immunity, supports both byte and page writes (up to 16 bytes per page), and uses an internal address pointer that auto-increments during sequential reads. Its write-protection logic is controlled solely by the WP pin state - tied to VSS for enable, VCC for full-array lockout.

Unlike 8-pin variants, the SOT-23-6 package omits the A2 pin, limiting device addressing to four units per bus (A1/A0 only), and excludes the WP pin entirely - write protection is disabled by design. The device operates across −40°C to +125°C (Automotive E-temp grade) with guaranteed 5 ms max write cycle time and >200 years data retention.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Size	1 Kbit (128 × 8-bit), enabling compact nonvolatile storage for small configuration tables or sensor offsets.
Interface	I²C-compatible 2-wire bus with 100 kHz (VCC < 2.5V) or 400 kHz (VCC ≥ 2.5V) operation - matches standard microcontroller I²C peripherals without clock stretching.
Supply Voltage	2.5V to 5.5V - compatible with 3.3V and 5V logic domains, excluding sub-2.5V operation unlike 24AA014.
Write Endurance	1,000,000 erase/write cycles - sufficient for firmware update logging or daily parameter logging over 10+ years.
Data Retention	>200 years at +25°C - ensures long-term integrity of factory-trimmed calibration coefficients or security keys.
Operating Temp	−40°C to +125°C (Automotive E-grade) - qualified for under-hood, powertrain, and ADAS module deployment.
Standby Current	1 µA typical at 5.5V - enables battery-backed operation in always-on automotive modules with multi-year shelf life.

Pinout & Package

24LC014T-E/OT is packaged in a Pb-free, RoHS-compliant 6-lead SOT-23 (JEDEC MO-178AA) measuring 2.9 mm × 1.6 mm × 1.1 mm, with no exposed pad. This compact footprint suits space-constrained automotive PCBs and portable industrial sensors.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Power supply input	Accepts 2.5V–5.5V; must be decoupled with 0.1 µF ceramic capacitor near pin for stable I²C communication.
SCL	Serial clock input	Master-generated clock; requires external pull-up (2 kΩ typical for 400 kHz); Schmitt-trigger input rejects noise spikes ≤50 ns.
SDA	Serial data bidirectional I/O	Open-drain output; requires same pull-up as SCL; changes only during SCL low except for Start/Stop conditions.
VSS	Ground reference	Must connect directly to system ground plane; shared return path for all I²C devices on bus.
A0	Chip address input	Hardwired to VSS or VCC to set LSB of 7-bit slave address (1010xx0); enables up to four devices on one bus.
A1	Chip address input	Hardwired to VSS or VCC to set middle bit of slave address (1010x0x); combined with A0, defines unique device ID.

Key Features

Feature	Design Value
Hardware write protection	Not implemented - SOT-23-6 variant lacks WP pin, requiring software-level access control or external logic for write safeguarding.
Page write buffer	16-byte internal buffer enables burst programming of configuration blocks without repeated Start/Stop overhead.
Auto-increment address pointer	Enables single-command sequential reads across full 128-byte array, reducing host CPU I²C transaction count by up to 94% vs. random reads.
Wide temperature range	−40°C to +125°C operation validated per AEC-Q100 stress tests - suitable for engine control units and battery management systems.
ESD robustness	>4,000V HBM rating protects against assembly handling and field electrostatic discharge in unshielded environments.

Applications

Engine Control Unit (ECU)	Industrial PLC Module
Use Scenario: Storing adaptive fuel trim values, fault code history, and sensor offset corrections updated during vehicle runtime. IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during boot and periodic background tasks; no real-time latency constraints. Use Value: Enables zero-power retention of critical calibration data across ignition cycles while consuming <1 µA in sleep mode - extends backup battery life in telematics gateways.	Use Scenario: Holding firmware update staging flags, I/O mapping definitions, and user-defined alarm thresholds in modular automation controllers. IC Role / Device Role / Timing Role: Configuration EEPROM interfaced to ARM Cortex-M4 host MCU; accessed during initialization and configuration change events. Use Value: Provides deterministic 5 ms write-cycle timing and 1M endurance - supports daily reconfiguration in factory floor HMIs without wear-out risk over 10+ years.
Automotive Body Controller	Medical Infusion Pump
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock status across power-down events in smart body domain ECUs. IC Role / Device Role / Timing Role: Slave I²C device responding to LIN-to-I²C gateway; read/writes occur during low-activity maintenance windows. Use Value: Automotive-grade temp range (−40°C to +125°C) and 200-year data retention ensure reliable recall of user preferences even after 15+ years of vehicle service life.	Use Scenario: Storing drug library parameters, dose limits, and calibration constants required for FDA 21 CFR Part 11 compliance in Class II infusion systems. IC Role / Device Role / Timing Role: Secure configuration store isolated from main application processor; write-protected via software lock after factory programming. Use Value: 1 µA standby current minimizes impact on primary battery runtime in portable medical devices, while 1M endurance supports full lifecycle traceability logging.

Engine Control Unit (ECU)

Industrial PLC Module

Use Scenario: Storing adaptive fuel trim values, fault code history, and sensor offset corrections updated during vehicle runtime.

IC Role / Device Role / Timing Role: Nonvolatile configuration register accessed via I²C during boot and periodic background tasks; no real-time latency constraints.

Use Value: Enables zero-power retention of critical calibration data across ignition cycles while consuming <1 µA in sleep mode - extends backup battery life in telematics gateways.

Use Scenario: Holding firmware update staging flags, I/O mapping definitions, and user-defined alarm thresholds in modular automation controllers.

IC Role / Device Role / Timing Role: Configuration EEPROM interfaced to ARM Cortex-M4 host MCU; accessed during initialization and configuration change events.

Use Value: Provides deterministic 5 ms write-cycle timing and 1M endurance - supports daily reconfiguration in factory floor HMIs without wear-out risk over 10+ years.

Automotive Body Controller

Medical Infusion Pump

Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock status across power-down events in smart body domain ECUs.

IC Role / Device Role / Timing Role: Slave I²C device responding to LIN-to-I²C gateway; read/writes occur during low-activity maintenance windows.

Use Value: Automotive-grade temp range (−40°C to +125°C) and 200-year data retention ensure reliable recall of user preferences even after 15+ years of vehicle service life.

Use Scenario: Storing drug library parameters, dose limits, and calibration constants required for FDA 21 CFR Part 11 compliance in Class II infusion systems.

IC Role / Device Role / Timing Role: Secure configuration store isolated from main application processor; write-protected via software lock after factory programming.

Use Value: 1 µA standby current minimizes impact on primary battery runtime in portable medical devices, while 1M endurance supports full lifecycle traceability logging.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
24LC014T-I/OT	Industrial temp grade (−40°C to +85°C); identical electrical specs and SOT-23-6 pinout.	Lacks automotive qualification; not suitable for under-hood or powertrain locations.	Select when cost-sensitive industrial designs do not require AEC-Q100 validation or extended high-temp operation.
AT24C01D-SSHM-T	1 Kbit I²C EEPROM in SOT-23-6; supports 1.7V–5.5V, includes WP pin (unlike 24LC014T-E/OT), and offers 2M endurance.	WP pin enables hardware write lock; wider VCC range supports battery-powered edge nodes down to 1.7V.	Choose when hardware write protection or sub-2.5V operation is mandatory, accepting different manufacturer qualification and sourcing chain.

Compared with 24LC014T-E/OT, the 24LC014T-I/OT reduces thermal margin but lowers unit cost for non-automotive use, while AT24C01D-SSHM-T adds WP functionality and voltage flexibility at the expense of Microchip's automotive qualification and established supply chain traceability.

Availability

24LC014T-E/OT is available at Aetrix Electronics and suitable for automotive body control units, industrial programmable logic controllers, medical infusion pumps, and engine control modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 24LC014T-E/OT 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 Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with global manufacturing and quality certifications including ISO/TS 16949 and AEC-Q200.

The 24LC014T-E/OT belongs to Microchip's legacy serial EEPROM product line, designed specifically for automotive and industrial applications demanding high reliability, extended temperature operation, and proven I²C interoperability with mainstream MCUs.

FAQ

What is the maximum I²C clock frequency supported by the 24LC014T-E/OT?

The 24LC014T-E/OT supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At voltages below 2.5V, the maximum clock rate drops to 100 kHz. This dual-speed capability ensures compatibility with both legacy 100 kHz systems and modern high-throughput microcontrollers - all while maintaining full timing compliance per I²C specification. The 24LC014T-E/OT does not require external clock dividers or protocol translation.

Does the 24LC014T-E/OT include a Write-Protect (WP) pin?

No, the 24LC014T-E/OT in SOT-23-6 package does not include a WP pin - it is physically omitted per Microchip's package mapping for this variant. Hardware write protection is therefore unavailable. System-level write safeguards must be implemented in firmware or via external logic. This differs from 8-pin versions (e.g., 24LC014-I/P) which retain the WP pin. The 24LC014T-E/OT relies on software-controlled access policies to prevent unintended writes.

How many devices can be connected on the same I²C bus using the 24LC014T-E/OT?

Up to four 24LC014T-E/OT devices can share a single I²C bus, because the SOT-23-6 package provides only A0 and A1 address inputs (A2 is absent). These two pins define the two least-significant bits of the 7-bit slave address (1010xx0 format), yielding four unique combinations. This contrasts with 8-pin variants that support eight devices via A0–A2. Bus arbitration remains collision-free as each 24LC014T-E/OT responds only to its assigned address.

What is the write endurance and data retention specification for the 24LC014T-E/OT?

The 24LC014T-E/OT guarantees 1,000,000 erase/write cycles and >200 years of data retention at +25°C. These values are characterized and ensured per Microchip's Total Endurance™ model, not just sampled. In automotive applications operating continuously at +105°C, projected endurance remains >100,000 cycles - sufficient for daily firmware updates or parameter logging over 10+ years. The 24LC014T-E/OT maintains these specs across its full −40°C to +125°C operating range.

Is the 24LC014T-E/OT pin-compatible with other Microchip 1 Kbit EEPROMs like the 24AA014?

No, the 24LC014T-E/OT is not pin-compatible with the 24AA014 due to differing voltage ranges and package-specific pin assignments. While both share the SOT-23-6 footprint, the 24AA014 operates down to 1.7V and includes different DC characteristics; more critically, the 24LC014T-E/OT lacks WP and A2 pins present in 8-pin variants. Substituting 24LC014T-E/OT for 24AA014 in a design requires verification of VCC compatibility, removal of WP logic, and adjustment of address decoding - the 24LC014T-E/OT must be treated as a distinct part.

24LC014T-E/OT Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: SOT-23-6

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 1Kbit

Memory Organization:: 128 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 ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-6

24LC014T-E/OT FAQ

1.How can I place an order for 24LC014T-E/OT through Aetrix?

Please submit a Request for Quotation (RFQ) for 24LC014T-E/OT 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 24LC014T-E/OT reliable?

The price and inventory of 24LC014T-E/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC014T-E/OT is usually 5 days.

3.What payment methods are accepted for 24LC014T-E/OT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC014T-E/OT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 24LC014T-E/OT?

24LC014T-E/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 24LC014T-E/OT 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 24LC014T-E/OT?

For technical support, including 24LC014T-E/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC014T-E/OT requirements.

6.How does Aetrix verify that 24LC014T-E/OT is sourced from the original manufacturer or authorized distributors?

All 24LC014T-E/OT 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 24LC014T-E/OT meets industry standards.

7.What is the process for return or replacement of 24LC014T-E/OT?

All 24LC014T-E/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24LC014T-E/OT, 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 24LC014T-E/OT part is unused and in its original packaging.

Return procedure for 24LC014T-E/OT:

1.Submit a request within 90 days.

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

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