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Microchip Technology 24VL025T/OT
- Part No.:
- 24VL025T/OT
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- SOT-23-6
- Datasheet:
-
24VL025T/OT.pdf
- Description:
- IC EEPROM 2KBIT I2C SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
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Product details
Overview
24VL025T/OT from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM optimized for ultra-low-voltage operation (1.5V–3.6V), delivering ≤400 μA active current and ≤1 μA standby current. It features a 16-byte page write buffer, Schmitt-triggered SDA/SCL inputs for noise immunity, and supports 100 kHz (VCC < 1.8V) or 400 kHz (VCC ≥ 1.8V) clock rates. It is used in battery-powered sensor nodes and portable medical devices requiring nonvolatile memory with minimal power draw.
For engineers reviewing the 24VL025T/OT datasheet, 24VL025T/OT pinout, 24VL025T/OT application, or 24VL025T/OT equivalent, key selection criteria include its 6-lead SOT-23 footprint, absence of WP pin, guaranteed 1 million erase/write cycles, 200-year data retention, and compatibility with I²C master controllers operating down to 1.5V supply.
Technical Context
The 24VL025T/OT implements a standard I²C slave interface with fixed 7-bit address prefix '1010' and three programmable chip-select bits (A0, A1, A2), enabling up to four devices on one bus in SOT-23 package due to unconnected A2 pin. Its internal architecture includes a self-timed write cycle (≤5 ms), on-chip address pointer for sequential reads, and voltage-threshold detection that disables write logic below 1.0V.
Unlike the 24VL024, the 24VL025T/OT omits the WP pin-hardware write protection is not implemented. All pins except VCC and VSS are Schmitt-triggered (SDA, SCL, A0, A1), providing ≥50 ns spike suppression and stable operation on noisy PCBs. The device uses low-power CMOS process with ESD protection >4 kV HBM across all pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit array), sufficient for calibration data, device IDs, or small firmware patches in space-constrained designs |
| VCC Range | 1.5V to 3.6V - enables direct interface with Li-ion coin cells (e.g., CR2032) and 1.8V/2.5V/3.3V logic domains without level shifters |
| I²C Clock Rate | 100 kHz (VCC < 1.8V) or 400 kHz (VCC ≥ 1.8V) - supports both legacy and high-speed I²C masters while maintaining timing compliance |
| Write Cycle Time | ≤5 ms per byte or page - defines minimum interval between successive writes; critical for real-time logging applications |
| Endurance | 1,000,000 erase/write cycles - ensures reliable operation over 10+ years in daily-write scenarios (e.g., energy metering) |
| Data Retention | >200 years at 25°C - guarantees long-term storage integrity without refresh, suitable for archival configuration storage |
| Operating Temp | −20°C to +85°C - validated for industrial and extended commercial environments, including automotive cabin modules |
Pinout & Package
24VL025T/OT is supplied in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm height), optimized for high-density PCB layouts and automated assembly. Pin 1 is marked by laser indentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SCL | Serial clock input - must be driven by I²C master; requires external pull-up resistor (2 kΩ typical for 400 kHz) |
| 2 | VSS | Ground reference - connects to system GND plane; decoupling capacitor (100 nF) recommended adjacent to pin |
| 3 | SDA | Bidirectional open-drain data line - shared among multiple I²C slaves; requires same pull-up as SCL |
| 4 | A1 | Chip select bit 1 - sets bit A1 of 7-bit slave address (1010xx0); tied to VSS or VCC to configure device address |
| 5 | A0 | Chip select bit 0 - sets bit A0 of slave address; enables up to four unique addresses (1010xx0) on same bus |
| 6 | VCC | Power supply input - accepts 1.5V–3.6V; bypass capacitor mandatory to suppress switching noise during write cycles |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply 1.5V operation | Eliminates need for voltage regulators or charge pumps in coin-cell-powered systems, reducing BOM count and board area |
| Schmitt-trigger inputs (SDA/SCL/A0/A1) | Provides ≥0.05×VCC hysteresis, rejecting noise spikes up to 50 ns - essential for reliable communication in EMI-heavy environments |
| 16-byte page write buffer | Reduces I²C transaction overhead by up to 16× vs. byte writes, improving firmware update throughput in embedded hosts |
| No WP pin (24VL025-specific) | Removes external hardware write-protection dependency; software-controlled locking via address-based access control required |
| 100% tested DC characteristics | Guarantees VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC across full temperature range - ensures interoperability with diverse I²C masters |
Applications
| Wearable Health Monitor | Smart Energy Meter |
|---|---|
|
Use Scenario: Stores user-specific calibration coefficients and historical biometric snapshots (heart rate, SpO₂) between BLE sync events. IC Role / Device Role / Timing Role: Nonvolatile configuration and event log storage; accessed asynchronously via I²C during low-power sleep intervals. Use Value: Enables 3+ year battery life using CR2032 cell by drawing only 1 μA in standby and completing writes in ≤5 ms to minimize active time. |
Use Scenario: Retains tariff schedules, pulse-count history, and tamper-event timestamps across mains power loss. IC Role / Device Role / Timing Role: Primary data logger for metrology subsystem; written once per second during peak load, read on demand by MCU. Use Value: Guarantees 200-year data integrity and survives 1M+ write cycles - exceeds 20-year utility meter lifetime requirements. |
| Industrial Sensor Node | POS Terminal Peripheral |
|
Use Scenario: Holds factory-set sensor offsets, linearization tables, and field-updated compensation parameters in vibration or temperature transmitters. IC Role / Device Role / Timing Role: Calibration memory mapped into host MCU's I²C address space; accessed during power-on initialization and maintenance mode. Use Value: Operates reliably at 1.8V from isolated 3.3V rail with no level shifter, reducing component count and failure points in harsh EMC environments. |
Use Scenario: Stores peripheral firmware version, cryptographic keys, and last-known transaction ID in magnetic stripe reader modules. IC Role / Device Role / Timing Role: Secure boot configuration store; read at startup and updated only during authenticated firmware updates. Use Value: Supports 400 kHz I²C transfers at 3.3V, enabling sub-10ms key retrieval - critical for PCI PTS compliance timing windows. |
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 (Microchip) | Same 2 Kbit capacity, 1.7V–5.5V VCC range, includes WP pin; SOT-23-6 package with identical pinout | Hardware write protection available; suited for applications requiring physical lockout of memory writes | Select if WP functionality is required; note higher minimum VCC limits out 1.5V operation |
| BR24G02NUX-10 (ROHM) | 2 Kbit, 1.6V–5.5V, 400 kHz, SOT-23-6; includes write-protect register (software-configurable) | Flexible protection modes (entire array or page-level); no dedicated WP pin but offers finer-grained control | Choose when software-defined protection granularity is preferred over hardware simplicity |
Compared with AT24C02D-SSHM-T and BR24G02NUX-10, the 24VL025T/OT uniquely supports true 1.5V operation and delivers lowest standby current (1 μA), making it optimal for primary battery applications where voltage headroom and leakage are critical constraints.
Availability
24VL025T/OT is available at Aetrix Electronics and suitable for wearable health monitors, smart energy meters, industrial sensor nodes, and POS terminal peripherals requiring stable component supply across multi-year production cycles.
Supply support for 24VL025T/OT 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 24VL024/24VL025 family was designed specifically for ultra-low-voltage, low-power embedded systems - targeting battery-operated IoT endpoints, portable diagnostics, and energy-harvesting devices where every microamp matters.
FAQ
What is the maximum I²C clock frequency supported by the 24VL025T/OT?
The 24VL025T/OT supports 400 kHz I²C clock frequency when VCC is ≥1.8V, and 100 kHz when VCC is between 1.5V and <1.8V. This dual-rate capability ensures compatibility with both high-speed and ultra-low-voltage I²C masters without external clock dividers or protocol translation.
Does the 24VL025T/OT have a hardware write-protect (WP) pin?
No, the 24VL025T/OT does not include a WP pin - this feature is exclusive to the 24VL024 variant. The 24VL025T/OT relies entirely on software-based access control; write protection must be implemented in firmware via address-range locking or command sequencing.
How many 24VL025T/OT devices can be connected on a single I²C bus?
Up to four 24VL025T/OT devices can share one I²C bus. Because the SOT-23 package lacks the A2 pin, only two chip-select bits (A0, A1) are available, yielding four unique 7-bit slave addresses (1010xx0). Each device must have distinct A0/A1 hardwiring to VSS or VCC.
What is the page size and maximum write length for the 24VL025T/OT?
The 24VL025T/OT has a 16-byte page buffer. Page writes can transfer up to 16 bytes in a single I²C transaction, provided all addresses fall within the same physical page boundary (i.e., addresses 0x00–0x0F, 0x10–0x1F, etc.). Crossing a page boundary causes wraparound, not auto-increment to next page.
Is the 24VL025T/OT RoHS compliant and lead-free?
Yes, the 24VL025T/OT is Pb-free and RoHS compliant per EU Directive 2011/65/EU. The SOT-23 package uses matte tin (Sn) plating per JEDEC standard, and marking includes the "3e" Pb-free designation on reel labels per Microchip's packaging specification DS22130A-page 14.
24VL025T/OT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- 1.5V ~ 3.6V
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
24VL025T/OT FAQ
1.How can I place an order for 24VL025T/OT through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL025T/OT 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 24VL025T/OT reliable?
The price and inventory of 24VL025T/OT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL025T/OT is usually 5 days.
3.What payment methods are accepted for 24VL025T/OT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL025T/OT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL025T/OT?
24VL025T/OT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL025T/OT 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 24VL025T/OT?
For technical support, including 24VL025T/OT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL025T/OT requirements.
6.How does Aetrix verify that 24VL025T/OT is sourced from the original manufacturer or authorized distributors?
All 24VL025T/OT 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 24VL025T/OT meets industry standards.
7.What is the process for return or replacement of 24VL025T/OT?
All 24VL025T/OT units undergo pre-shipment inspection (PSI). If there is an issue with 24VL025T/OT, 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 24VL025T/OT part is unused and in its original packaging.
Return procedure for 24VL025T/OT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24VL025T/OT 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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