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Microchip Technology 24LC00T/OT
- Part No.:
- 24LC00T/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SC-74A, SOT-753
- Datasheet:
-
24LC00T/OT.pdf
- Description:
- IC EEPROM 128BIT I2C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,687
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Product details
Overview
24LC00T/OT 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 traceability. 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). Its 5-lead SOT-23 package enables compact PCB integration in sensor modules and portable electronics.
For engineers reviewing the 24LC00T/OT datasheet, 24LC00T/OT pinout, 24LC00T/OT application, or 24LC00T/OT equivalent, this page delivers verified electrical specs, validated SOT-23 terminal mapping, confirmed I²C timing compliance, and real-world use cases - all grounded in Microchip's DS20001178J datasheet and official package drawings.
Technical Context
The 24LC00T/OT 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 counter supports current-address, random, and sequential read modes, while self-timed erase/write cycles eliminate external timing dependencies.
It uses on-chip high-voltage generation for EEPROM programming and includes a VCC threshold detector that disables write logic below 2.5V nominal - ensuring data integrity during brown-out conditions. The device requires no external components beyond standard I²C pull-up resistors (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 or ID storage without over-provisioning. |
| VCC operating range | 2.5V to 5.5V; compatible with 3.3V and 5V systems but not 1.8V logic rails (unlike 24AA00). |
| I²C clock frequency | Up to 400 kHz at VCC ≥ 4.5V; enables faster firmware updates than standard 100 kHz mode. |
| Write cycle time | Typical 3 ms per byte; allows rapid field-programming of calibration values during production test. |
| Endurance & retention | 1 million erase/write cycles and >200 years data retention; suitable for lifetime logging in unattended devices. |
| Standby current | 100 nA typical at VCC = 5.5V; critical for battery-powered IoT nodes where quiescent power dominates lifetime. |
| ESD protection | >4000 V HBM; provides robustness against handling damage in assembly and field service environments. |
Pinout & Package
24LC00T/OT is housed in a 5-lead SOT-23 package (Microchip drawing C04-091D), optimized for high-density layouts. Pin 1 is SCL, Pin 2 is VSS, Pin 3 is SDA, Pin 4 is NC (not connected), and Pin 5 is VCC. All pins are surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (SCL) | Serial Clock input | Synchronizes all I²C transactions; must be pulled up externally; accepts standard I²C timing (min THIGH = 600 ns @ 400 kHz). |
| Pin 2 (VSS) | Ground reference | Common return path for all internal circuitry; requires low-impedance connection to system GND plane. |
| Pin 3 (SDA) | Bidirectional open-drain data line | Carries addresses, commands, and data; requires external pull-up resistor; supports ACK polling during write cycles. |
| Pin 4 (NC) | No connection | Internally unconnected; must remain floating - no routing or soldering required. |
| Pin 5 (VCC) | Power supply input | Supplies core logic and EEPROM array; bypass capacitor (0.1 µF) recommended near pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides 0.05×VCC hysteresis on SCL/SDA, enabling reliable operation on noisy PCBs or long traces without external filtering. |
| Output slope control | Slows SDA edge rates to prevent ground bounce and EMI, eliminating need for series resistors in most designs. |
| Self-timed write cycle | Removes requirement for host MCU to manage write timing - simplifies firmware and avoids bus blocking. |
| Factory programming option | Allows pre-loading of unique identifiers or calibration constants at wafer/test stage, reducing post-silicon programming steps. |
| Pb-free & RoHS compliant | Meets global environmental regulations; qualified for lead-free reflow (JEDEC J-STD-020) with peak temperature up to 260°C. |
Applications
| Smart Sensor Calibration | Industrial Control Module ID |
|---|---|
|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in HVAC or process monitoring systems. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed once at power-up via I²C; no runtime writes required after calibration. Use Value: Eliminates manual potentiometer adjustment and enables automated calibration during final test, reducing labor cost and improving repeatability. |
Use Scenario: Embedding unique serial numbers, firmware version, and hardware revision codes into PLC I/O modules. IC Role / Device Role / Timing Role: Read-only identity storage accessed by host controller during boot sequence to validate module compatibility. Use Value: Enables plug-and-play interoperability and prevents mismatched firmware loads, reducing field returns and support calls. |
| Portable Medical Device Traceability | Consumer Appliance Manufacturing Data |
|
Use Scenario: Recording production date, lot code, and regulatory certification status in handheld glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Write-once data storage during end-of-line test; read during device diagnostics or regulatory audit. Use Value: Supports FDA 21 CFR Part 11 compliance and facilitates root-cause analysis for field failures without adding microcontroller flash overhead. |
Use Scenario: Storing model-specific configuration parameters (e.g., motor ramp rates, display language) during white-goods assembly. IC Role / Device Role / Timing Role: One-time programmable memory written during final test; read at startup to configure operational behavior. Use Value: Allows single-hardware platform to support multiple SKUs, reducing inventory complexity and BOM variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA00T/OT | Lower VCC min = 1.8V; identical pinout, timing, and memory map; same SOT-23 package. | Better suited for 1.8V/2.5V battery-powered systems where 24LC00T/OT cannot operate. | Select 24AA00T/OT when supply voltage may dip below 2.5V; otherwise 24LC00T/OT offers identical functionality at lower cost. |
| AT24C01C-SSHM-T | 1 Kbit (128 × 8) capacity; same 2.5–5.5V range and I²C interface; SOIC-8 package (not SOT-23). | Requires PCB layout change due to different footprint and pin count; offers 8× more memory. | Choose AT24C01C-SSHM-T only if additional storage is needed and board redesign is acceptable; not a drop-in replacement. |
Compared with 24AA00T/OT, the 24LC00T/OT trades 1.8V operation for tighter VCC tolerance and potentially lower unit cost; versus AT24C01C-SSHM-T, it sacrifices memory density and package compatibility for minimal footprint and proven integration in space-limited designs.
Availability
24LC00T/OT is available at Aetrix Electronics and suitable for smart sensor calibration, industrial control module ID, and portable medical device traceability requiring stable component supply across multi-year production cycles.
Supply support for 24LC00T/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 leading provider of microcontrollers, analog devices, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC00T/OT belongs to Microchip's legacy 24XX00 family of ultra-low-power serial EEPROMs, engineered specifically for cost-sensitive, space-constrained applications needing reliable nonvolatile storage of small critical data sets.
FAQ
What is the minimum VCC required for reliable operation of the 24LC00T/OT?
The 24LC00T/OT requires a minimum VCC of 2.5V across its full industrial temperature range (–40°C to +85°C), as specified in Microchip's DS20001178J datasheet. Operation below this voltage disables write functionality and may cause read instability. This distinguishes it from the 24AA00T/OT, which supports down to 1.8V.
Does the 24LC00T/OT support both 100 kHz and 400 kHz I²C clock speeds?
Yes, the 24LC00T/OT fully supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C operation. At VCC ≥ 4.5V, it meets all AC timing requirements for 400 kHz, including THIGH ≥ 600 ns and TLOW ≥ 1300 ns. Pull-up resistor values must be adjusted accordingly (2 kΩ typical for 400 kHz).
How many write/erase cycles can the 24LC00T/OT endure before failure?
The 24LC00T/OT is rated for more than 1 million erase/write cycles under normal operating conditions, with data retention exceeding 200 years at +85°C ambient. These figures are characterized per Microchip DS20001178J and apply across the full industrial temperature range without derating.
What is the function of Pin 4 (NC) on the 24LC00T/OT SOT-23 package?
Pin 4 on the 24LC00T/OT is designated NC (Not Connected) and is internally unconnected. It must remain electrically floating - no trace, pad, or solder connection should be made. This pin exists for mechanical symmetry and package compatibility, not functional use.
Can the 24LC00T/OT be used in automotive applications requiring –40°C to +125°C operation?
No, the 24LC00T/OT is qualified only for the industrial temperature range (–40°C to +85°C). For automotive-grade operation up to +125°C, Microchip specifies the 24C00 variant (e.g., 24C00T/OT), which has a higher VCC minimum of 4.5V and extended thermal qualification.
24LC00T/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
- SOT-23-5
24LC00T/OT FAQ
1.How can I place an order for 24LC00T/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC00T/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 24LC00T/OT reliable?
The price and inventory of 24LC00T/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC00T/OT is usually 5 days.
3.What payment methods are accepted for 24LC00T/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC00T/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC00T/OT?
24LC00T/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC00T/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 24LC00T/OT?
For technical support, including 24LC00T/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC00T/OT requirements.
6.How does Aetrix verify that 24LC00T/OT is sourced from the original manufacturer or authorized distributors?
All 24LC00T/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 24LC00T/OT meets industry standards.
7.What is the process for return or replacement of 24LC00T/OT?
All 24LC00T/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24LC00T/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 24LC00T/OT part is unused and in its original packaging.
Return procedure for 24LC00T/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC00T/OT Tags
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AT21CS01-STUM10-T
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