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Microchip Technology 24LC025T/SN
- Part No.:
- 24LC025T/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC025T/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,152
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Product details
Overview
24LC025T/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 industrial temperature range (–40°C to +85°C). It features 16-byte page write buffer, 400 kHz clock support, and 1 μA standby current. Used for storing calibration data, configuration settings, or device identifiers in embedded control modules.
For engineers reviewing the 24LC025T/SN datasheet, 24LC025T/SN pinout, 24LC025T/SN application, or 24LC025T/SN equivalent, key selection criteria include voltage compatibility (2.5–5.5V), SOT-23 package footprint, absence of hardware write-protect (WP pin not connected), and 6-pin I²C interface timing compliance at 400 kHz.
Technical Context
The 24LC025T/SN implements a standard two-wire I²C slave interface with open-drain SDA/SCL pins requiring external pull-ups. Its internal address pointer auto-increments during sequential reads and supports byte/page writes with self-timed erase/write cycles.
Unlike 24LC024 variants, the 24LC025T/SN omits internal connection of the WP pin and excludes A2 in the SOT-23 package-limiting cascading to four devices via A1/A0 only. It uses Schmitt-trigger inputs and input filtering to suppress noise on noisy industrial buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit), sufficient for firmware revision stamps or sensor calibration coefficients |
| Supply voltage | 2.5V to 5.5V - compatible with 3.3V and 5V logic systems without level shifting |
| Interface | I²C-compatible 2-wire bus - enables shared bus with microcontrollers and sensors |
| Max clock frequency | 400 kHz - supports faster configuration loading vs. legacy 100 kHz EEPROMs |
| Page write size | 16 bytes - reduces write transaction count for multi-byte parameter sets |
| Endurance | 1 million erase/write cycles - suitable for field-updatable parameters with frequent logging |
| Data retention | 200 years at 25°C - ensures long-term storage integrity in unpowered equipment |
Pinout & Package
24LC025T/SN is supplied in a Pb-free, RoHS-compliant 6-lead SOT-23 package (1.6 mm × 2.8 mm × 1.1 mm body height) with gull-wing leads. Pin 1 marked by laser dot; pin 1 = SCL, pin 2 = VCC, pin 3 = SDA, pin 4 = A1, pin 5 = A0, pin 6 = VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock input | Master-generated clock synchronizing all I²C transfers; requires external pull-up |
| VCC | Positive supply | 2.5–5.5V power input; internal voltage detector disables writes below ~1.5V |
| SDA | Serial Data bidirectional I/O | Open-drain line shared across I²C bus; must be pulled up externally (2 kΩ typical for 400 kHz) |
| A1 | Device address bit 1 | Configures slave address (1010 A1 A0 0); enables up to four 24LC025T/SN devices on one bus |
| A0 | Device address bit 0 | LSB of chip select; combined with A1 forms 2-bit address space (00–11) |
| VSS | Ground reference | Return path for supply and signal currents; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Write-protect disabled | No internal WP pin connection - eliminates external hardware protection wiring and simplifies layout |
| Schmitt-trigger inputs | 0.05 VCC hysteresis on SCL/SDA - rejects fast transients and improves robustness on electrically noisy PCBs |
| Output slope control | Controlled SDA rise/fall times - prevents ground bounce and EMI during switching transitions |
| Page write buffer | 16-byte internal buffer - allows burst writes without repeated start conditions, reducing bus overhead |
| Low-power operation | 1 μA typical standby current - extends battery life in portable or energy-harvesting applications |
Applications
| Industrial Sensor Node | Medical Device Calibration |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain values for analog front-end circuits in distributed temperature/humidity sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed at power-up via I²C; no real-time timing role. Use Value: Enables plug-and-play sensor replacement without host reprogramming; 200-year data retention ensures calibration persistence over product lifetime. | Use Scenario: Holding patient-specific therapy parameters and usage logs in portable infusion pumps. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter store; accessed asynchronously during setup or diagnostics. Use Value: Meets IEC 62304 Class B software requirements for persistent data integrity; 1M endurance supports daily log updates for >27 years. |
| Smart Meter Firmware ID | Automotive Body Control Module |
Use Scenario: Recording firmware version, manufacturing date, and utility-specific configuration flags in electricity meters. IC Role / Device Role / Timing Role: Read-once-at-boot memory element; no write operations after initial commissioning. Use Value: Provides traceability and field-upgrade verification; 2.5–5.5V operation matches meter's wide-input DC-DC output. | Use Scenario: Storing seat position presets, mirror angles, and lighting profiles in automotive door modules. IC Role / Device Role / Timing Role: I²C slave storing user preferences; written during setup, read at ignition-on. Use Value: Industrial temp rating (–40°C to +85°C) ensures reliability in under-hood environments; SOT-23 footprint saves board space. |
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; differs only in marking and reel packaging (T = tape-and-reel, no suffix = tube) | No functional difference; both rated for industrial temperature range | Select 24LC025T/SN for automated SMT placement; choose 24LC025-I/SN for manual prototyping or low-volume builds |
| AT24C02D-SSHM-T | 2 Kbit I²C EEPROM with same 2.5–5.5V range and 400 kHz speed, but includes write-protect enable/disable control via software command | Supports dynamic lock/unlock of memory blocks; 24LC025T/SN lacks this feature entirely | Choose AT24C02D-SSHM-T when runtime write-protection control is required; retain 24LC025T/SN for fixed, simplified hardware-only designs |
Compared with 24LC025-I/SN, the 24LC025T/SN offers identical functionality in tape-and-reel format optimized for high-volume production. Against AT24C02D-SSHM-T, it trades software-configurable write protection for lower gate count, reduced test complexity, and guaranteed absence of accidental lockout due to firmware errors.
Availability
24LC025T/SN is available at Aetrix Electronics and suitable for industrial sensor nodes, medical device calibration storage, and smart meter firmware identification requiring stable component supply across extended product lifecycles.
Supply support for 24LC025T/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 microcontroller, analog, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC025T/SN belongs to Microchip's serial EEPROM product line, engineered for reliable nonvolatile data storage in cost-sensitive, space-constrained embedded systems where I²C interface simplicity and industrial-grade reliability are critical.
FAQ
What is the maximum I²C clock frequency supported by the 24LC025T/SN?
The 24LC025T/SN supports up to 400 kHz I²C clock frequency when VCC ≥ 1.8V. At VCC < 1.8V, maximum clock rate drops to 100 kHz per Microchip DS21210N specification. This dual-speed capability ensures interoperability across diverse host controller platforms while maintaining timing margin at lower voltages.
Does the 24LC025T/SN have hardware write protection?
No, the 24LC025T/SN does not include hardware write protection. The WP pin is not internally connected per Microchip's device documentation. Unlike the 24LC024 variant, this part relies solely on software-level access control or system-level isolation for write security.
How many 24LC025T/SN devices can be connected on a single I²C bus?
Up to four 24LC025T/SN devices can share one I²C bus. The SOT-23 package omits the A2 pin, leaving only A1 and A0 for chip addressing - yielding four unique combinations (00, 01, 10, 11) in the 1010xx0 slave address format.
What is the page write buffer size of the 24LC025T/SN?
The 24LC025T/SN features a 16-byte page write buffer. This allows up to 16 bytes to be loaded into the internal buffer before initiating the self-timed write cycle, reducing I²C transaction overhead compared to single-byte writes.
Is the 24LC025T/SN compatible with 3.3V and 5V I²C systems?
Yes, the 24LC025T/SN operates across 2.5V to 5.5V, making it fully compatible with both 3.3V and 5V I²C buses. Its Schmitt-trigger inputs and specified VIH/VIL thresholds ensure robust logic-level recognition across this voltage range without external level shifters.
24LC025T/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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC025T/SN FAQ
1.How can I place an order for 24LC025T/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC025T/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/SN reliable?
The price and inventory of 24LC025T/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/SN is usually 5 days.
3.What payment methods are accepted for 24LC025T/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC025T/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC025T/SN?
24LC025T/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC025T/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/SN?
For technical support, including 24LC025T/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC025T/SN requirements.
6.How does Aetrix verify that 24LC025T/SN is sourced from the original manufacturer or authorized distributors?
All 24LC025T/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/SN meets industry standards.
7.What is the process for return or replacement of 24LC025T/SN?
All 24LC025T/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC025T/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/SN part is unused and in its original packaging.
Return procedure for 24LC025T/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC025T/SN Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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