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

Microchip Technology 24LC00T/ST

Name: 24LC00T/ST
Brand: Microchip Technology
SKU: 24LC00T/ST
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 24LC00T/ST

Manufacturer:: Microchip Technology

Category:: Memory

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

Datasheet:: 24LC00T/ST.pdf

Description:: IC EEPROM 128BIT I2C 8TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:2,062

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Product details

Overview

24LC00T/ST from Microchip Technology Inc. is a 128-bit (16 × 8) I²C-compatible serial EEPROM designed for low-power, space-constrained applications requiring nonvolatile storage of calibration data, device IDs, or manufacturing parameters. It operates from 2.5V to 5.5V, draws only 500 µA typical read current and 100 nA typical standby current, and supports 100 kHz / 400 kHz clock rates in industrial temperature range (–40°C to +85°C).

For engineers reviewing the 24LC00T/ST datasheet, 24LC00T/ST pinout, 24LC00T/ST application, or 24LC00T/ST equivalent, this page delivers verified electrical specs, package mapping, I²C timing compliance, endurance (1M cycles), and real-world use context - all confirmed against Microchip DS20001178J.

Technical Context

The 24LC00T/ST implements a true 2-wire I²C slave interface with Schmitt-trigger inputs and output slope control to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes, while self-timed erase/write cycles eliminate external timing dependencies.

It uses an on-chip high-voltage generator for EEPROM programming and includes V_CC threshold detection (trip point ~2.5V) to inhibit writes during undervoltage conditions. The device requires no external components beyond standard I²C pull-ups (2 kΩ for 400 kHz, 10 kΩ for 100 kHz).

Key Specifications

Parameter	Value and Actual Design Meaning
Memory size	128 bits (16 words × 8 bits); sufficient for small configuration tokens or unique identifiers
V_CC operating range	2.5V to 5.5V; compatible with 3.3V and 5V logic systems without level shifting
Max clock frequency	400 kHz at V_CC ≥ 4.5V; enables fast parameter updates in time-sensitive embedded hosts
Write cycle time	3 ms typical; defines minimum interval between successive byte writes
Endurance	1 million erase/write cycles; supports long-term field recalibration or logging
Data retention	200 years at +85°C; ensures firmware-embedded calibration remains valid over product lifetime
Standby current	100 nA typical; critical for battery-powered IoT nodes and energy-harvesting sensors

Pinout & Package

24LC00T/ST is supplied in a Pb-free, RoHS-compliant 5-lead SOT-23 package (Microchip drawing C04-091D). Pin 1 = SCL, Pin 2 = V_SS, Pin 3 = SDA, Pin 4 = NC, Pin 5 = V_CC. The NC pin is internally unconnected and must be left floating or tied to V_SS/V_CC per layout requirements.

Pin/Terminal	Circuit Role	Design Meaning
SCL (Pin 1)	Serial Clock input	Master-generated synchronous clock; edge-triggered, Schmitt-triggered for noise immunity
V_SS (Pin 2)	Ground reference	Return path for all internal circuitry; must be low-impedance and decoupled near device
SDA (Pin 3)	Bidirectional open-drain I/O	Carries address/data; requires external pull-up; supports multi-master arbitration
NC (Pin 4)	No connect	Internally unconnected; may be left floating or tied to V_SS/V_CC for mechanical stability
V_CC (Pin 5)	Power supply	Supplies core logic and EEPROM array; bypass capacitor (0.1 µF) required at pin

Key Features

Feature	Design Value
I²C bus compatibility	Fully compliant with Philips I²C specification; supports standard-mode (100 kHz) and fast-mode (400 kHz) timing
Schmitt-trigger inputs	Input hysteresis ≥0.05×V_CC; rejects EMI-induced glitches on SCL/SDA in noisy industrial environments
Output slope control	Controlled SDA rise/fall times prevent ground bounce and signal integrity issues on shared buses
Self-timed write cycle	No external delay or polling required; host can initiate ACK polling to detect completion
ESD protection	±4 kV HBM; protects against handling damage and system-level ESD events

Applications

Industrial Sensor Calibration	Consumer Device ID Storage
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed once at power-up via I²C; no runtime writes required. Use Value: Eliminates need for external trimming potentiometers or costly laser calibration; enables automated production line programming.	Use Scenario: Holding unique serial numbers and model identifiers in smart home thermostats and remote controls. IC Role / Device Role / Timing Role: Read-only data store queried by MCU during boot; accessed at 100 kHz to minimize boot latency. Use Value: Enables firmware differentiation, regulatory labeling, and anti-counterfeiting without consuming MCU flash space.
Medical Diagnostic Instrumentation	Automotive Body Control Module
Use Scenario: Recording last-known operational state (e.g., alarm thresholds, user preferences) in portable glucose meters. IC Role / Device Role / Timing Role: Low-power backup memory written infrequently (<10×/day); retains data during battery replacement. Use Value: Achieves <100 nA standby draw to extend single-CR2032 battery life beyond 5 years.	Use Scenario: Storing seat position presets and mirror adjustment profiles in automotive door modules. IC Role / Device Role / Timing Role: I²C slave interfaced to LIN-to-I²C bridge; written during user setup, read at ignition-on. Use Value: Provides robust, radiation-tolerant storage unaffected by CAN/LIN bus transients.

Industrial Sensor Calibration

Consumer Device ID Storage

Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers.

IC Role / Device Role / Timing Role: Nonvolatile configuration memory accessed once at power-up via I²C; no runtime writes required.

Use Value: Eliminates need for external trimming potentiometers or costly laser calibration; enables automated production line programming.

Use Scenario: Holding unique serial numbers and model identifiers in smart home thermostats and remote controls.

IC Role / Device Role / Timing Role: Read-only data store queried by MCU during boot; accessed at 100 kHz to minimize boot latency.

Use Value: Enables firmware differentiation, regulatory labeling, and anti-counterfeiting without consuming MCU flash space.

Medical Diagnostic Instrumentation

Automotive Body Control Module

Use Scenario: Recording last-known operational state (e.g., alarm thresholds, user preferences) in portable glucose meters.

IC Role / Device Role / Timing Role: Low-power backup memory written infrequently (<10×/day); retains data during battery replacement.

Use Value: Achieves <100 nA standby draw to extend single-CR2032 battery life beyond 5 years.

Use Scenario: Storing seat position presets and mirror adjustment profiles in automotive door modules.

IC Role / Device Role / Timing Role: I²C slave interfaced to LIN-to-I²C bridge; written during user setup, read at ignition-on.

Use Value: Provides robust, radiation-tolerant storage unaffected by CAN/LIN bus transients.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
24AA00T/ST	Lower V_CC min (1.8V vs. 2.5V); identical 128-bit capacity, timing, and pinout	Suitable for 1.8V/2.5V systems where 24LC00T/ST cannot operate	Select when host MCU runs below 2.5V or requires extended low-voltage operation
AT24C01C-SSHM-T	1-kbit capacity (8× larger), same 5-lead SOT-23 package, 1.7–5.5V V_CC, 1M endurance	Provides headroom for future firmware expansion or additional parameter sets	Choose when design may require >128 bits of EEPROM or needs broader voltage flexibility

Compared with 24LC00T/ST, 24AA00T/ST enables lower-voltage operation but offers no performance gain, while AT24C01C-SSHM-T trades minimal footprint increase for 8× memory depth and wider supply range - both serve distinct voltage or capacity requirements rather than acting as drop-in replacements.

Availability

24LC00T/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer device ID storage, medical diagnostic instrumentation, and automotive body control module applications requiring stable component supply across extended product lifecycles.

Supply support for 24LC00T/ST 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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.

The 24XX00 family - including 24LC00T/ST - was engineered specifically for ultra-low-power, minimal-footprint nonvolatile storage in cost-sensitive embedded systems where reliability and I²C simplicity are prioritized over density.

FAQ

What is the minimum V_CC required for reliable operation of the 24LC00T/ST?

The 24LC00T/ST requires a minimum V_CC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Below this voltage, the internal high-voltage generator cannot reliably program the EEPROM cells, and the device inhibits write cycles via its V_CC threshold detector. This differs from the 24AA00T/ST, which supports down to 1.8V.

Does the 24LC00T/ST support multi-master I²C arbitration?

Yes, the 24LC00T/ST fully supports I²C multi-master arbitration through its open-drain SDA architecture and strict adherence to I²C bus protocol rules. When multiple masters contend, the 24LC00T/ST behaves as a standard slave: it releases SDA after each bit, allowing dominant masters to drive the line low. No special configuration is needed - arbitration is handled entirely by the bus physical layer.

How many write cycles can the 24LC00T/ST endure before failure?

The 24LC00T/ST is rated for more than 1 million erase/write cycles per memory location, as confirmed by Microchip's characterization data (DS20001178J, Table 1-2, Note 4). This endurance is specified under recommended operating conditions and ensures long-term reliability in applications involving periodic calibration updates or event logging.

Is the NC pin on the 24LC00T/ST (SOT-23 package) required to be connected?

No, the NC pin (Pin 4) on the 24LC00T/ST in 5-lead SOT-23 is internally unconnected and does not require termination. It may be left floating, tied to V_SS, or tied to V_CC based on PCB mechanical or thermal requirements - none of these choices affect electrical functionality. Microchip's pin function table explicitly lists it as "Not Connected" for all package variants.

Can the 24LC00T/ST be used in automotive applications requiring AEC-Q200 qualification?

No, the 24LC00T/ST is specified only for the industrial temperature range (–40°C to +85°C) and is not AEC-Q200 qualified. For automotive applications, Microchip offers the 24C00 variant (e.g., 24C00-E/ST), which supports the extended automotive temperature range (–40°C to +125°C) and is qualified per AEC-Q200. The 24LC00T/ST should not be deployed in under-hood or safety-critical vehicle subsystems.

24LC00T/ST Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Memory Type:: Non-Volatile

Memory Format:: EEPROM

Technology:: EEPROM

Memory Size:: 128bit

Memory Organization:: 16 x 8

Memory Interface:: I2C

Clock Frequency:: 400 kHz

Write Cycle Time - Word, Page:: 4ms

Access Time:: 3.5 µs

Voltage - Supply:: 2.5V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-TSSOP

24LC00T/ST FAQ

1.How can I place an order for 24LC00T/ST through Aetrix?

Please submit a Request for Quotation (RFQ) for 24LC00T/ST 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 24LC00T/ST reliable?

The price and inventory of 24LC00T/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC00T/ST is usually 5 days.

3.What payment methods are accepted for 24LC00T/ST?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC00T/ST transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 24LC00T/ST?

24LC00T/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 24LC00T/ST 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 24LC00T/ST?

For technical support, including 24LC00T/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC00T/ST requirements.

6.How does Aetrix verify that 24LC00T/ST is sourced from the original manufacturer or authorized distributors?

All 24LC00T/ST 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 24LC00T/ST meets industry standards.

7.What is the process for return or replacement of 24LC00T/ST?

All 24LC00T/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC00T/ST, 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 24LC00T/ST part is unused and in its original packaging.

Return procedure for 24LC00T/ST:

1.Submit a request within 90 days.

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

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