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Microchip Technology 24LC025T-I/SN
- Part No.:
- 24LC025T-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC025T-I/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,625
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Product details
Overview
24LC025T-I/SN from Microchip Technology Inc. is a 2 Kbit (256 × 8) I²C-compatible serial EEPROM optimized for industrial-temperature embedded systems. It operates from 2.5V to 5.5V, supports 400 kHz clock rate, features 16-byte page write buffer, and delivers ≤5 ms write cycle time with >1 million erase/write cycles and >200 years data retention. It is commonly used for configuration storage in sensor nodes and industrial controllers.
For engineers reviewing the 24LC025T-I/SN datasheet, 24LC025T-I/SN pinout, 24LC025T-I/SN application, or 24LC025T-I/SN equivalent, key selection considerations include its SOT-23-6 package, absence of hardware write-protect (WP), industrial temperature range (–40°C to +85°C), and compatibility with standard I²C bus timing at 400 kHz under VCC ≥ 2.5V.
Technical Context
The 24LC025T-I/SN implements a standard two-wire I²C interface with open-drain SDA/SCL pins, Schmitt-trigger inputs, and internal slope control to suppress ground bounce. Its address decoding uses A0 and A1 pins (A2 not connected in SOT-23), enabling up to four devices on one bus.
It employs self-timed erase/write cycles with automatic page-buffer management and supports byte-write and page-write modes. No WP pin is present-hardware write protection is disabled by design, distinguishing it from 24LC024 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit array), sufficient for firmware calibration tables or device ID storage |
| VCC range | 2.5V to 5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| Max clock frequency | 400 kHz - enables fast configuration reads in time-critical boot sequences |
| Page write buffer | 16 bytes - reduces I²C transaction count when updating multi-byte parameters |
| Write cycle time | ≤5 ms - defines minimum interval between successive write commands |
| Endurance & retention | 1 million cycles / >200 years - ensures long-term reliability in infrequently updated settings |
| Operating temperature | –40°C to +85°C (Industrial grade) - validated for factory automation and outdoor equipment |
Pinout & Package
24LC025T-I/SN is housed in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm). Pin 1 is marked by laser; pin 3 is SDA, pin 1 is SCL, and A2 is not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL (Pin 1) | Serial Clock input | Synchronizes all I²C transfers; requires external pull-up; supports 400 kHz max clock |
| SDA (Pin 3) | Serial Data bidirectional I/O | Open-drain interface; shares bus with other I²C slaves; requires pull-up resistor |
| A0 (Pin 5) | Chip select address bit | Defines LSB of 3-bit slave address; sets device address offset within 4-device bus limit |
| A1 (Pin 4) | Chip select address bit | Defines middle bit of slave address; enables unique addressing among up to four SOT-23 units |
| VSS (Pin 2) | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system GND |
| VCC (Pin 6) | Power supply | Accepts 2.5V–5.5V; includes internal voltage threshold detector disabling writes below ~1.5V |
Key Features
| Feature | Design Value |
|---|---|
| 16-byte page write buffer | Reduces required I²C start/stop overhead by up to 16× vs. byte-write for contiguous updates |
| Schmitt-trigger inputs | Rejects noise spikes <50 ns, improving robustness on electrically noisy industrial PCBs |
| Self-timed write cycle | Eliminates need for external timing control or polling delay estimation in host firmware |
| No WP pin (SOT-23 variant) | Removes external hardware dependency for write-enable control; simplifies layout and BOM |
| I²C bus compatibility | Fully conforms to standard I²C protocol including ACK polling, START/STOP, and address arbitration |
Applications
| Industrial Sensor Calibration | Embedded Controller Configuration |
|---|---|
Use Scenario: Storing factory-calibrated gain/offset coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile parameter store accessed during power-up initialization via I²C. Use Value: Enables field-replaceable sensor modules without reprogramming host MCU firmware. | Use Scenario: Holding user-defined operating modes, network addresses, and alarm thresholds in HVAC control panels. IC Role / Device Role / Timing Role: Persistent configuration memory written infrequently but read at every boot. Use Value: Supports zero-touch commissioning and retains settings across power loss or firmware updates. |
| Medical Device Settings | Automotive Body Control Module |
Use Scenario: Saving patient-specific therapy parameters and usage logs in portable diagnostic instruments. IC Role / Device Role / Timing Role: Secure, long-life data storage interfaced through isolated I²C bus. Use Value: Meets IEC 62304 data integrity requirements with verified 200-year retention. | Use Scenario: Storing door lock programming, mirror position presets, and lighting profiles in vehicle BCMs. IC Role / Device Role / Timing Role: Industrial-grade EEPROM co-located with microcontroller on same PCB. Use Value: Qualified for –40°C to +85°C operation and withstands automotive ESD transients (>4 kV). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC025-I/SN | Same die, identical electrical specs, but in SOIC-8 package (not SOT-23); includes WP pin (unconnected in this variant) | Requires larger PCB footprint; supports hardware write-protection if WP tied externally | Select when board space allows SOIC-8 and WP functionality is desired |
| AT24C02D-SSHM-T | 2 Kbit I²C EEPROM, 1.7–5.5V VCC, 400 kHz, SOIC-8; different pinout and manufacturer | No SOT-23 option available; lacks A2 pin support (only A0/A1), limiting bus scalability to 4 devices | Select when sourcing diversification is required and SOIC-8 is acceptable |
Compared with 24LC025T-I/SN, the 24LC025-I/SN offers identical functionality in a larger package with optional WP routing, while AT24C02D-SSHM-T provides second-source availability but no SOT-23 footprint or A2-addressing capability.
Availability
24LC025T-I/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded controller configuration, and medical device settings requiring stable component supply across extended product lifecycles.
Supply support for 24LC025T-I/SN 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 components, and nonvolatile memory solutions, headquartered in Chandler, Arizona.
The 24LCxx family was designed specifically for cost-sensitive, space-constrained embedded systems needing reliable, low-power serial EEPROM with industrial-grade temperature performance and I²C interoperability.
FAQ
What is the maximum I²C clock frequency supported by the 24LC025T-I/SN?
The 24LC025T-I/SN supports up to 400 kHz I²C clock frequency when VCC is ≥2.5V. At lower voltages (not applicable here, as its specified VCC starts at 2.5V), timing de-rates to 100 kHz. This allows high-speed configuration reads in real-time systems without compromising signal integrity.
Does the 24LC025T-I/SN have hardware write protection?
No - the 24LC025T-I/SN does not include a WP pin. The datasheet explicitly states "WP pin is not internally connected on the 24XX025", and the SOT-23 package has no WP terminal. Write protection must be implemented in software or via system-level access control.
How many 24LC025T-I/SN devices can share the same I²C bus?
Up to four 24LC025T-I/SN devices can share one I²C bus. Because the SOT-23 package lacks A2, only A0 and A1 are available for chip-select addressing, yielding 2² = 4 unique slave addresses (0x50–0x53). This matches the device's documented bus scalability limit for SOT-23 variants.
What is the page write capacity of the 24LC025T-I/SN?
The 24LC025T-I/SN has a 16-byte page write buffer. A single I²C write transaction (with Stop condition) can program up to 16 contiguous bytes - provided they lie within the same 16-byte physical page boundary (addresses 0x00–0x0F, 0x10–0x1F, etc.). Crossing boundaries causes wraparound.
Is the 24LC025T-I/SN suitable for automotive applications?
No - the 24LC025T-I/SN is rated for Industrial temperature range (–40°C to +85°C), not Automotive (–40°C to +125°C). For automotive use, Microchip specifies the 24LC025-E/SN variant, which undergoes additional qualification testing and is marked with 'E' grade in the part number and packaging.
24LC025T-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC025T-I/SN FAQ
1.How can I place an order for 24LC025T-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC025T-I/SN 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 24LC025T-I/SN reliable?
The price and inventory of 24LC025T-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC025T-I/SN is usually 5 days.
3.What payment methods are accepted for 24LC025T-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC025T-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC025T-I/SN?
24LC025T-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC025T-I/SN 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 24LC025T-I/SN?
For technical support, including 24LC025T-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC025T-I/SN requirements.
6.How does Aetrix verify that 24LC025T-I/SN is sourced from the original manufacturer or authorized distributors?
All 24LC025T-I/SN 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 24LC025T-I/SN meets industry standards.
7.What is the process for return or replacement of 24LC025T-I/SN?
All 24LC025T-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC025T-I/SN, 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 24LC025T-I/SN part is unused and in its original packaging.
Return procedure for 24LC025T-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC025T-I/SN Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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