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Microchip Technology 24LC025T-E/SN
- Part No.:
- 24LC025T-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC025T-E/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,724
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Product details
Overview
24LC025T-E/SN from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 2.5V to 5.5V with 400 kHz clock support and industrial/automotive temperature range (–40°C to +125°C). It features 16-byte page write buffer, 5 ms max write cycle time, and Schmitt-trigger inputs for noise immunity - deployed in automotive body control modules for storing calibration data and configuration parameters.
For engineers reviewing the 24LC025T-E/SN datasheet, 24LC025T-E/SN pinout, 24LC025T-E/SN application, or 24LC025T-E/SN equivalent, key selection considerations include its SOT-23-6 package, absence of hardware write-protect (WP not connected), automotive-grade qualification, and compatibility with I²C bus systems requiring robust nonvolatile storage at extended temperature.
Technical Context
The 24LC025T-E/SN implements a standard two-wire I²C interface with master-controlled clock (SCL) and bidirectional open-drain data (SDA), supporting both byte and page write operations. Its internal address pointer auto-increments during sequential reads and wraps from 0xFF to 0x00.
It uses Schmitt-trigger inputs on SCL/SDA with 50 ns spike suppression and hysteresis (0.05 × VCC), enabling reliable operation on noisy automotive buses. The device lacks internal WP connection - write protection must be implemented externally or via software lock bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware patch storage or sensor calibration tables in space-constrained ECUs. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V automotive microcontroller I/O domains without level shifting. |
| Max Clock Frequency | 400 kHz - enables faster configuration loading vs. 100 kHz devices, reducing boot-time latency in safety-critical systems. |
| Page Write Buffer | 16 bytes - allows efficient bulk writes (e.g., updating multiple CAN node IDs or trim values) within one I²C transaction. |
| Write Cycle Time | 5 ms maximum - defines minimum inter-write interval; impacts real-time logging throughput in telematics units. |
| Endurance | 1 million erase/write cycles - supports frequent recalibration in adaptive lighting or battery management systems. |
| Data Retention | 200 years at 25°C - ensures long-term reliability of stored VIN, odometer, or security keys across vehicle lifetime. |
Pinout & Package
24LC025T-E/SN is housed in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm), optimized for high-density automotive PCB layouts. Pin 1 is marked by laser indentation; A2 is not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCL) | Serial Clock Input | Master-generated clock synchronizing all I²C transfers; requires external pull-up resistor (2 kΩ typical for 400 kHz). |
| 2 (VSS) | Ground Reference | System ground return path; must be low-impedance to minimize noise coupling into SDA/SCL lines. |
| 3 (SDA) | Serial Data I/O | Bidirectional open-drain bus line; shared among multiple I²C slaves; requires external pull-up resistor. |
| 4 (A1) | Address Input | Second chip-select bit; sets device address (1010 A2 A1 A0 R/W); tied to VSS or VCC to configure I²C slave address. |
| 5 (A0) | Address Input | Least-significant chip-select bit; enables up to four 24LC025T-E/SN devices on same bus (A2 absent in SOT-23). |
| 6 (VCC) | Power Supply | +2.5V to +5.5V supply input; includes internal voltage threshold detector disabling writes below ~1.5V to prevent corruption. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | 50 ns spike suppression + 0.05 × VCC hysteresis - eliminates false triggering from EMI in engine bay environments. |
| Page write capability | 16-byte buffer enables single-burst writes of calibration blocks, reducing I²C bus occupancy and host CPU overhead. |
| Automotive temperature grade | –40°C to +125°C operation - qualified for under-hood and transmission control unit deployments per AEC-Q100 stress tests. |
| Low standby current | 1 μA typical - extends battery life in always-on modules like keyless entry receivers or tire pressure sensors. |
| I²C bus compatibility | Fully compliant with Philips I²C specification (100/400 kHz modes) - interoperable with STM32, NXP S32K, and Renesas RH850 MCUs. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
|
Use Scenario: Storing seat position presets, mirror angles, and door lock configurations across ignition cycles. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with fast random read access and infrequent page writes during user setup. Use Value: Enables personalized settings retention without backup battery; 200-year data retention guarantees integrity over vehicle lifespan. |
Use Scenario: Logging temperature/humidity readings from environmental sensors in remote monitoring gateways. IC Role / Device Role / Timing Role: Local data buffering between sensor sampling intervals and wireless transmission bursts. Use Value: 16-byte page write reduces I²C transaction count per log entry; 1M endurance supports >10 years of daily updates. |
| Medical Infusion Pump | Smart Meter Calibration Storage |
|
Use Scenario: Holding dose history, alarm thresholds, and regulatory audit logs in Class II medical devices. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter storage with deterministic 5 ms write timing for traceability compliance. Use Value: Absence of WP pin simplifies design but requires firmware-level write-locking; RoHS/Pb-free compliance meets IEC 60601-1 requirements. |
Use Scenario: Storing factory-calibrated ADC offset/gain coefficients and meter serial number in utility smart meters. IC Role / Device Role / Timing Role: One-time or infrequent programming during production test, then read-only during field operation. Use Value: 2.5V–5.5V VCC range matches meter MCU supply; 400 kHz I²C speed accelerates end-of-line calibration verification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | 2 Kbit, 1.7–5.5V, 1 MHz I²C, 8-lead SOIC; includes WP pin and 100-year retention. | Requires PCB layout change (SOIC vs SOT-23); WP pin enables hardware lockout for critical calibration data. | Select when hardware write-protection and higher-speed I²C are required, and board space permits SOIC footprint. |
| BR24G02-3SER | 2 Kbit, 1.6–5.5V, 1 MHz I²C, SOT-23-6; built-in error correction (ECC) and 10M endurance. | Same package; ECC mitigates bit-flips in high-radiation environments (e.g., avionics), but adds 2% latency overhead. | Select for mission-critical systems where data integrity outweighs marginal cost increase and latency penalty. |
Compared with AT24C02D-SSHM-T and BR24G02-3SER, the 24LC025T-E/SN offers optimal balance of automotive qualification, compact SOT-23 packaging, and proven reliability in cost-sensitive ECU designs - without ECC overhead or larger footprint.
Availability
24LC025T-E/SN is available at Aetrix Electronics and suitable for automotive body control, industrial sensor nodes, medical infusion pumps, and smart meter calibration storage requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24LC025T-E/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 memory solutions, headquartered in Chandler, Arizona, with global manufacturing and support infrastructure.
The 24LC025T-E/SN belongs to Microchip's automotive-qualified serial EEPROM product line, designed specifically for reliable nonvolatile data storage in harsh environments including engine control, chassis systems, and ADAS subsystems.
FAQ
What is the operating voltage range of the 24LC025T-E/SN?
The 24LC025T-E/SN operates from 2.5V to 5.5V, making it compatible with both 3.3V and 5V microcontroller I/O domains. This range excludes the lower 1.7V–2.5V operation supported by the 24AA025 variant, confirming its targeted use in automotive and industrial systems with regulated supplies.
Does the 24LC025T-E/SN have a hardware write-protect pin?
No, the 24LC025T-E/SN does not include a functional WP pin - it is not internally connected, as confirmed in the datasheet's Pin Descriptions section. Write protection must be implemented via software commands or external circuitry, unlike the 24LC024 which integrates hardware WP functionality.
What package type is used for the 24LC025T-E/SN?
The 24LC025T-E/SN uses a 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm), distinct from the 8-lead PDIP, SOIC, TSSOP, DFN, and MSOP packages offered for other members of the 24XX025 family. Pin A2 is not connected in this variant.
How many devices can be connected on the same I²C bus using the 24LC025T-E/SN?
Up to four 24LC025T-E/SN devices can share one I²C bus, enabled by the A0 and A1 address pins (A2 is unconnected in SOT-23). Each device is assigned a unique 3-bit slave address (1010 A1 A0 R/W), allowing contiguous 8 Kbit expansion without address conflicts.
What is the maximum write cycle time for the 24LC025T-E/SN?
The maximum write cycle time for the 24LC025T-E/SN is 5 ms, applicable to both byte and page write operations. This self-timed value is independent of VCC and clock frequency, ensuring predictable timing behavior during firmware updates or calibration writes in real-time systems.
24LC025T-E/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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC025T-E/SN FAQ
1.How can I place an order for 24LC025T-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC025T-E/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-E/SN reliable?
The price and inventory of 24LC025T-E/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-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC025T-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC025T-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC025T-E/SN?
24LC025T-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC025T-E/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-E/SN?
For technical support, including 24LC025T-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC025T-E/SN requirements.
6.How does Aetrix verify that 24LC025T-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC025T-E/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-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC025T-E/SN?
All 24LC025T-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC025T-E/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-E/SN part is unused and in its original packaging.
Return procedure for 24LC025T-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC025T-E/SN Tags
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