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Microchip Technology 24LC025T-I/MS
- Part No.:
- 24LC025T-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC025T-I/MS.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,025
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Product details
Overview
24LC025T-I/MS 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 Schmitt-trigger inputs for noise immunity-used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24LC025T-I/MS datasheet, 24LC025T-I/MS pinout, 24LC025T-I/MS application, or 24LC025T-I/MS equivalent, key selection considerations include voltage compatibility (2.5V min), absence of hardware write-protect (WP pin not connected), SOT-23-6 package footprint constraints, and I²C bus timing compliance at 400 kHz under industrial temperature conditions.
Technical Context
The 24LC025T-I/MS implements a standard two-wire I²C slave interface with fixed 7-bit address prefix '1010' and three programmable chip-select bits (A0–A2), enabling up to eight devices on one bus. Its internal address pointer auto-increments during sequential reads and wraps from 0xFF to 0x00.
It uses low-power CMOS technology with typical standby current of 1 μA and active read current of 1 mA. Write operations are self-timed with maximum 5 ms cycle time; no external erase command is required, and page writes are limited to 16 bytes within a single physical page boundary.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit) - provides sufficient nonvolatile storage for device IDs, calibration coefficients, or small configuration tables. |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic systems; excludes sub-2.5V operation unlike 24AA variants. |
| Max Clock Frequency | 400 kHz - supports high-speed I²C mode; reduced to 100 kHz only if VCC < 2.5V (not applicable here). |
| Page Write Buffer | 16 bytes - enables efficient bulk writes without repeated start/stop overhead; crossing page boundaries causes wraparound. |
| Endurance | 1 million erase/write cycles - ensures long-term reliability in field-updatable applications like metering or industrial controllers. |
| Data Retention | 200 years - guarantees data integrity over product lifetime without refresh, critical for unattended remote deployments. |
| Temperature Range | –40°C to +85°C (Industrial) - validated for operation in extended ambient environments including factory automation and automotive cabin modules. |
Pinout & Package
24LC025T-I/MS is housed in a 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.1 mm), optimized for space-constrained PCB layouts. Pin 1 is marked by laser dot; pin 3 is SDA (open-drain, requires external pull-up); pin 1 is SCL; pins 4 and 5 are A0 and A1 address inputs; pin 2 is VSS; pin 6 is VCC. A2 and WP pins are not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SCL | Serial clock input - synchronizes all I²C transactions; must be driven by master with rise/fall time ≤300 ns at VCC ≥1.8V. |
| 2 | VSS | Ground reference - common return path for all internal circuitry and I/O; requires low-impedance connection to system ground plane. |
| 3 | SDA | Serial data bidirectional I/O - open-drain output requiring external pull-up (2 kΩ typical for 400 kHz); changes only during SCL low except for Start/Stop. |
| 4 | A0 | Chip select bit 0 - sets LSB of 3-bit device address; tied high/low to configure unique I²C address among up to four SOT-23 devices on same bus. |
| 5 | A1 | Chip select bit 1 - sets middle bit of device address; used with A0 to enable up to four independent 24LC025T-I/MS units per I²C segment. |
| 6 | VCC | Power supply - supplies core logic and EEPROM array; decoupling capacitor (0.1 μF) required within 10 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Input hysteresis ≥0.05×VCC eliminates false triggering from bus noise, enabling robust operation in electrically noisy industrial environments. |
| Output slope control | Controlled SDA/SCL edge rates suppress ground bounce, reducing EMI and preventing unintended Start/Stop generation during fast transitions. |
| 16-byte page write buffer | Reduces I²C transaction count by up to 16× versus byte writes, lowering bus occupancy and improving system-level throughput in burst-write scenarios. |
| No WP pin connection | Removes hardware write-protection dependency - simplifies design by eliminating external WP routing; software-controlled protection must be implemented externally if needed. |
| ESD protection | >4 kV HBM - meets IEC 61000-4-2 Level 2 requirements, enhancing reliability during handling and in-system operation. |
Applications
| Smart Sensor Node | Industrial PLC Module |
|---|---|
Use Scenario: Storing calibrated offset/gain values and sensor-specific coefficients after factory trim. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed via I²C during power-up or recalibration sequence. Use Value: Enables plug-and-play sensor replacement without host reprogramming; 200-year data retention ensures accuracy across equipment lifecycle. | Use Scenario: Holding user-defined I/O mapping tables and alarm thresholds in modular controller backplanes. IC Role / Device Role / Timing Role: Slave EEPROM on shared I²C bus, supporting up to four identical modules using A0/A1 addressing. Use Value: Eliminates need for jumpers or DIP switches; allows field updates via simple I²C write commands without firmware change. |
| Medical Diagnostic Handset | Automotive Body Control Unit |
Use Scenario: Retaining usage logs, battery cycle counts, and last-known operational state between power cycles. IC Role / Device Role / Timing Role: Low-power I²C slave storing infrequently updated but mission-critical runtime metadata. Use Value: 1 μA standby current extends battery life; 400 kHz interface supports fast log writes during brief wake periods. | Use Scenario: Saving seat/mirror position presets and lighting configuration preferences in entry-level BCMs. IC Role / Device Role / Timing Role: Compact-footprint EEPROM interfaced directly to microcontroller's I²C peripheral. Use Value: SOT-23-6 package fits tight board areas near MCU; –40°C to +85°C rating covers full cabin thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC025T-I/SN | Same 2 Kbit capacity, 400 kHz, and 2.5–5.5V operation, but in 8-lead SOIC (3.9 mm) package with A2 and WP pins present (unconnected on /MS). | SOIC offers easier hand-soldering and test access; A2 enables full 8-device addressing; WP presence allows optional hardware lock if redesign accommodates it. | Select /SN when board layout permits larger package and future flexibility for A2/WP use is desired. |
| AT24C02-SSHM-T | 2 Kbit I²C EEPROM with identical VCC (2.5–5.5V), 400 kHz, and industrial temp range; differs in AC timing specs (e.g., THD:STA min 600 ns vs. 4000 ns for 24LC025 at 1.7V). | Compatible pinout in SOIC-8 only; no SOT-23 variant; different write-cycle polling behavior may require minor firmware adaptation. | Select AT24C02-SSHM-T only if SOIC-8 footprint is available and timing margins permit direct substitution. |
Compared with 24LC025T-I/SN and AT24C02-SSHM-T, the 24LC025T-I/MS uniquely delivers minimal PCB area consumption in SOT-23-6 while maintaining full functional equivalence for I²C-based configuration storage-making it optimal for ultra-compact, cost-sensitive designs where A2/WP functionality is unnecessary.
Availability
24LC025T-I/MS is available at Aetrix Electronics and suitable for smart sensor nodes, industrial PLC modules, medical diagnostic handsets, and automotive body control units requiring stable component supply, long-term data integrity, and compact packaging.
Supply support for 24LC025T-I/MS 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 design and manufacturing operations.
The 24LC025 belongs to Microchip's legacy 24LCxx serial EEPROM family, designed specifically for reliable, low-power, I²C-based nonvolatile data storage in space- and cost-constrained embedded systems.
FAQ
What is the function of the WP pin on the 24LC025T-I/MS?
The WP (Write-Protect) pin is not internally connected on the 24LC025T-I/MS. Unlike the 24LC024 variant, this device lacks hardware write protection. All memory locations are writable whenever the device is powered and addressed correctly. No external WP signal routing is required, simplifying PCB layout and reducing BOM count.
Can the 24LC025T-I/MS operate at 1.8V?
No, the 24LC025T-I/MS requires a minimum VCC of 2.5V per its datasheet specifications. Operation below 2.5V is not guaranteed and may result in unreliable read/write behavior or failure to acknowledge I²C commands. For 1.7V–5.5V operation, consider the pin-compatible 24AA025 instead.
How many 24LC025T-I/MS devices can share one I²C bus?
Up to four 24LC025T-I/MS devices can share a single I²C bus. The SOT-23 package omits the A2 pin, leaving only A0 and A1 for chip-select addressing-yielding 2² = 4 unique 7-bit slave addresses (1010_00, 1010_01, 1010_10, 1010_11). Attempting to connect more than four will cause address collisions.
What is the maximum page write size supported by the 24LC025T-I/MS?
The 24LC025T-I/MS supports a maximum page write size of 16 bytes. Writes exceeding this limit within a single I²C transaction will wrap around to the start of the current page, overwriting previously loaded data. Software must enforce page boundaries (addresses 0x00–0x0F, 0x10–0x1F, etc.) to avoid unintended data loss.
Does the 24LC025T-I/MS support standard or fast-mode I²C?
The 24LC025T-I/MS supports Fast-mode I²C with a maximum clock frequency of 400 kHz at VCC ≥ 2.5V. Its AC timing parameters-including THIGH (600 ns min), TLOW (1300 ns min), and TSU:DAT (100 ns min)-are fully compliant with the I²C Fast-mode specification, enabling higher throughput than Standard-mode (100 kHz) devices.
24LC025T-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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-MSOP
24LC025T-I/MS FAQ
1.How can I place an order for 24LC025T-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC025T-I/MS 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/MS reliable?
The price and inventory of 24LC025T-I/MS 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/MS is usually 5 days.
3.What payment methods are accepted for 24LC025T-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC025T-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC025T-I/MS?
24LC025T-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC025T-I/MS 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/MS?
For technical support, including 24LC025T-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC025T-I/MS requirements.
6.How does Aetrix verify that 24LC025T-I/MS is sourced from the original manufacturer or authorized distributors?
All 24LC025T-I/MS 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/MS meets industry standards.
7.What is the process for return or replacement of 24LC025T-I/MS?
All 24LC025T-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC025T-I/MS, 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/MS part is unused and in its original packaging.
Return procedure for 24LC025T-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC025T-I/MS Tags
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