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Microchip Technology 24LC025-E/MC
- Part No.:
- 24LC025-E/MC
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
24LC025-E/MC.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,966
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Product details
Overview
24LC025-E/MC 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 max clock rate and industrial/automotive temperature range (–40°C to +125°C). It features 16-byte page write buffer, Schmitt-trigger inputs for noise immunity, and 1 μA typical standby current. Used in automotive body control modules for storing calibration data and configuration parameters.
For engineers reviewing the 24LC025-E/MC datasheet, 24LC025-E/MC pinout, 24LC025-E/MC application, or 24LC025-E/MC equivalent, key selection criteria include its SOT-23-6 package, absence of hardware write-protect (WP), automotive-grade reliability, and compatibility with standard I²C bus timing at 400 kHz under VCC ≥ 2.5V.
Technical Context
The 24LC025-E/MC implements a two-wire I²C interface with open-drain SDA/SCL pins requiring external pull-ups, and uses internal address pointer logic to support current-address, random, and sequential read modes. Its cascading capability allows up to four devices on one bus using A0/A1 address pins (A2 not connected in SOT-23).
It employs Schmitt-trigger inputs and input filtering (50 ns spike suppression) to ensure robust operation in electrically noisy environments such as automotive chassis networks. Write operations are self-timed with 5 ms maximum cycle time, and acknowledge polling enables efficient bus utilization during erase/write cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware revision stamps, sensor calibration coefficients, or small configuration tables. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V microcontroller I/O domains without level shifting. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C mode for faster parameter updates in production test or field reconfiguration. |
| Page Write Buffer | 16 bytes - enables efficient bulk writes (e.g., updating full CAN node ID + baudrate + filter settings in one transaction). |
| Endurance & Retention | 1 million erase/write cycles and >200 years data retention - validated for lifetime use in automotive ECUs with infrequent but critical updates. |
| Temperature Range | –40°C to +125°C (Automotive E-grade) - qualified for under-hood and powertrain applications per AEC-Q100 requirements. |
| Standby Current | 1 μA typical - minimizes quiescent power draw in always-on vehicle modules like door modules or seat controllers. |
Pinout & Package
24LC025-E/MC is packaged in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.1 mm). The WP pin is not internally connected - hardware write protection is unavailable, requiring software-based access control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SCL) | Serial Clock Input | Asynchronous master-generated clock; must be pulled up externally; synchronizes all data transfers. |
| 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 | Open-drain bidirectional bus line; requires external pull-up (2 kΩ typical for 400 kHz); changes only during SCL low. |
| 4 (A1) | Address Input | Second chip-select bit; tied to VSS or VCC to configure device address (0x50–0x53 range); enables up to four devices on one bus. |
| 5 (A0) | Address Input | First chip-select bit; used with A1 to select among four possible addresses; A2 is NC in SOT-23 package. |
| 6 (VCC) | Power Supply | +2.5V to +5.5V supply; includes internal voltage threshold detector disabling write logic below ~1.5V to prevent corruption during brownout. |
Key Features
| Feature | Design Value |
|---|---|
| I²C Bus Compatibility | Fully compliant with Philips I²C specification Rev. 2.1 - interoperable with standard MCU I²C peripherals without custom drivers. |
| Noise Immunity | Schmitt-trigger inputs + 50 ns input filtering - eliminates false triggering from EMI in automotive harnesses or motor drive environments. |
| Page Write Efficiency | 16-byte buffer reduces bus occupancy by 87% vs. byte-write for 16-byte updates - critical for real-time systems with tight latency budgets. |
| Automotive Qualification | AEC-Q100 stress-tested across –40°C to +125°C - suitable for engine control, lighting, and ADAS subsystems requiring long-term reliability. |
| Low-Power Operation | 1 μA standby current enables battery-backed operation in sleep-mode vehicle modules for >10 years on coin-cell power. |
Applications
| Automotive Body Control Unit | Industrial Sensor Node |
|---|---|
|
Use Scenario: Storing unique VIN-derived security keys and door lock actuator calibration offsets in a compact door module PCB. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during boot and runtime; no WP pin requires firmware-enforced write-locking. Use Value: Enables secure, field-updatable calibration without external microcontroller flash usage or layout space for larger EEPROM packages. |
Use Scenario: Recording sensor offset drift compensation values in a wireless temperature/humidity node powered by energy harvesting. IC Role / Device Role / Timing Role: Low-power persistent memory holding correction coefficients updated once per hour; 1 μA standby extends battery life. Use Value: Eliminates need for higher-cost FRAM or battery-backed SRAM while meeting 10-year deployment lifespan requirements. |
| Medical Infusion Pump | Smart Meter Firmware Log |
|
Use Scenario: Archiving dose history and error logs in Class II medical equipment where data integrity is safety-critical. IC Role / Device Role / Timing Role: Fail-safe nonvolatile storage with >200-year retention; 1M endurance supports daily log entries over 27 years. Use Value: Meets IEC 62304 traceability requirements without external error-correcting logic or redundant memory arrays. |
Use Scenario: Capturing firmware update timestamps and checksums in utility meters deployed in remote substations. IC Role / Device Role / Timing Role: Tamper-resistant event logging via I²C; 400 kHz interface enables fast post-update verification before system reset. Use Value: Provides auditable update history for regulatory compliance (ANSI C12.22) without increasing BOM cost or PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA025-I/MC | Wider VCC range (1.7V–5.5V); same SOT-23-6 package and pinout; no WP pin. | Better suited for battery-powered portable devices with deep discharge profiles (e.g., handheld diagnostics tools). | Select 24AA025-I/MC if system operates below 2.5V; otherwise, 24LC025-E/MC offers guaranteed automotive qualification. |
| AT24C02D-SSHM-T | Same 2 Kbit capacity and SOT-23-6 package; 1.7V–5.5V VCC; includes WP pin (active-low). | Hardware write-protection available; automotive grade (AEC-Q100 Grade 2) but rated only to +105°C ambient. | Choose AT24C02D-SSHM-T only if WP functionality is required and temperature requirement is ≤ +105°C. |
Compared with 24AA025-I/MC, 24LC025-E/MC trades wider voltage range for guaranteed automotive qualification to +125°C; versus AT24C02D-SSHM-T, it sacrifices hardware write-protection for extended temperature capability and Microchip's long-term supply commitment.
Availability
24LC025-E/MC is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor nodes, and medical device firmware logging requiring stable component supply across extended product lifecycles.
Supply support for 24LC025-E/MC 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 24LCxx family was designed specifically for automotive and industrial applications demanding high reliability, wide temperature operation, and seamless I²C integration - targeting body electronics, powertrain sensors, and safety-critical configuration storage.
FAQ
What is the maximum I²C clock frequency supported by the 24LC025-E/MC?
The 24LC025-E/MC supports up to 400 kHz I²C clock frequency when VCC is ≥ 2.5V. At lower voltages (not applicable here, as minimum VCC is 2.5V), the maximum would drop to 100 kHz - but this condition does not occur for the 24LC025-E/MC due to its specified 2.5V–5.5V operating range. This 400 kHz capability enables faster parameter writes compared to legacy 100 kHz EEPROMs.
Does the 24LC025-E/MC have a hardware write-protect (WP) pin?
No, the 24LC025-E/MC does not include a functional WP pin - it is not internally connected. This distinguishes it from the 24LC024-E/MC and other variants with WP support. Write protection must therefore be implemented in firmware, such as by restricting I²C write commands to authorized boot sequences or authenticated sessions.
Which packages are available for the 24LC025-E/MC?
The 24LC025-E/MC is exclusively offered in the 6-lead SOT-23 package (3.0 mm × 1.7 mm footprint), optimized for space-constrained automotive and portable applications. Unlike the 8-lead PDIP, SOIC, TSSOP, DFN, TDFN, and MSOP variants available for other members of the 24XX025 family, the -E/MC suffix denotes this specific SOT-23 automotive-grade variant.
What is the memory organization of the 24LC025-E/MC?
The 24LC025-E/MC contains 2 Kbit of EEPROM memory organized as 256 words × 8 bits (256 bytes total), addressed linearly from 0x00 to 0xFF. It supports page writes of up to 16 bytes within a single physical page boundary - crossing page boundaries causes wraparound, so firmware must manage address alignment to avoid unintended overwrites.
Is the 24LC025-E/MC qualified for automotive applications?
Yes, the 24LC025-E/MC is explicitly rated for the Automotive (E) temperature range (–40°C to +125°C) and is manufactured and tested to meet AEC-Q100 reliability standards. Its datasheet specifies electrical characteristics across this full range, and the "E" in the part number denotes automotive qualification - making it suitable for under-hood, chassis, and ADAS subsystems.
24LC025-E/MC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad
- Packaging:
- Tube
- 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-DFN (2x3)
24LC025-E/MC FAQ
1.How can I place an order for 24LC025-E/MC through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC025-E/MC 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 24LC025-E/MC reliable?
The price and inventory of 24LC025-E/MC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC025-E/MC is usually 5 days.
3.What payment methods are accepted for 24LC025-E/MC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC025-E/MC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC025-E/MC?
24LC025-E/MC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC025-E/MC 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 24LC025-E/MC?
For technical support, including 24LC025-E/MC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC025-E/MC requirements.
6.How does Aetrix verify that 24LC025-E/MC is sourced from the original manufacturer or authorized distributors?
All 24LC025-E/MC 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 24LC025-E/MC meets industry standards.
7.What is the process for return or replacement of 24LC025-E/MC?
All 24LC025-E/MC units undergo pre-shipment inspection (PSI). If there is an issue with 24LC025-E/MC, 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 24LC025-E/MC part is unused and in its original packaging.
Return procedure for 24LC025-E/MC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC025-E/MC Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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