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Microchip Technology 24VL025T/ST
- Part No.:
- 24VL025T/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24VL025T/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,255
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Product details
Overview
24VL025T/ST from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM optimized for ultra-low-voltage operation down to 1.5V, featuring 400 μA max active current, 1 μA max standby current, and 16-byte page write capability. It serves as nonvolatile configuration storage in battery-powered sensors, portable medical devices, and energy-harvesting systems where supply headroom is constrained.
For engineers reviewing the 24VL025T/ST datasheet, 24VL025T/ST pinout, 24VL025T/ST application, or 24VL025T/ST equivalent, key selection criteria include its 1.5–3.6V VCC range, SOT-23-6 package with no internal WP connection, Schmitt-triggered SDA/SCL inputs for noise immunity, and guaranteed 1 million erase/write cycles with >200-year data retention.
Technical Context
The 24VL025T/ST implements a 2-wire I²C slave interface with hardware-addressable device selection via A0/A1 pins (A2 unconnected), supporting up to four devices on one bus. Its memory array is organized as 256 × 8-bit with an internal address pointer that auto-increments during sequential reads.
It uses low-power CMOS technology with integrated HV generator for EEPROM programming, self-timed write cycles (≤5 ms), and built-in VCC threshold detection that disables writes below 1.0V. Unlike the 24VL024, the 24VL025T/ST omits the WP pin-hardware write protection is not implemented.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit) - fits calibration tables, device IDs, and small firmware patches in space-constrained designs |
| VCC Range | 1.5V to 3.6V - enables direct interfacing with single-cell Li-ion, coin-cell, or energy-harvesting power sources |
| I²C Clock Speed | 100 kHz (VCC < 1.8V) / 400 kHz (VCC ≥ 1.8V) - balances speed and noise margin across voltage operating points |
| Write Endurance | 1 million cycles - supports frequent logging or parameter updates in industrial monitoring nodes |
| Data Retention | >200 years - ensures long-term reliability in sealed or inaccessible deployments like implantables or infrastructure sensors |
| Package | SOT-23-6 - 2.9 mm × 1.6 mm footprint ideal for wearables and miniaturized IoT edge nodes |
| Operating Temp | −20°C to +85°C - qualified for consumer, industrial, and automotive cabin environments |
Pinout & Package
24VL025T/ST is housed in a 6-lead SOT-23 package (JEDEC MO-178AA). Pin 1 is marked by laser dot; pin 1 = SCL, pin 2 = VSS, pin 3 = SDA, pin 4 = A1, pin 5 = A0, pin 6 = VCC. The WP pin is not internally connected - hardware write protection is absent.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | Serial Clock Input | Master-generated clock synchronizing all I²C transfers; requires external pull-up; Schmitt-triggered for noise rejection |
| VSS | Ground Reference | Return path for all internal logic and EEPROM programming currents; must be low-impedance to avoid ground bounce |
| SDA | Bidirectional Data Line | Open-drain I²C bus line requiring external pull-up; transmits addresses, data, and ACK/NACK signals |
| A1, A0 | Chip Select Inputs | Hard-wired to VCC/VSS to configure 2-bit slave address (1010xx0); enables up to four 24VL025T/ST devices per bus |
| VCC | Power Supply | Single supply input (1.5–3.6V); powers logic, interface, and EEPROM programming circuitry; includes brown-out detection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Voltage Operation | Functional at 1.5V VCC - eliminates need for voltage boosters in coin-cell or single-cell battery systems |
| Page Write Buffer | 16-byte buffer reduces I²C transaction count - cuts bus overhead by up to 94% vs. byte-write for block updates |
| Schmitt Trigger Inputs | Hysteresis ≥0.05×VCC on SDA/SCL - rejects noise spikes ≤50 ns, enabling robust operation in EMI-heavy motor or RF environments |
| Self-Timed Write Cycle | Internal 5 ms max write time - relieves host MCU of timing management; ACK polling confirms completion |
| ESD Protection | >4 kV HBM - withstands handling and board-level ESD events without external protection components |
Applications
| Smart Wearables | Industrial Sensors |
|---|---|
Use Scenario: Storing user profile settings, sensor calibration coefficients, and firmware update flags in compact fitness trackers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with I²C interface; no timing-critical role - operates only on demand during boot or parameter change. Use Value: 1.5V operation extends battery life; 16-byte page writes minimize MCU wake time and reduce system power consumption. |
Use Scenario: Logging temperature/humidity readings and storing factory calibration data in wireless environmental monitors deployed in HVAC ducts. IC Role / Device Role / Timing Role: Persistent data logger and calibration memory; accessed asynchronously via I²C during periodic reporting intervals. Use Value: >200-year data retention ensures field-deployed units retain calibration across product lifetime without maintenance. |
| Medical Patch Devices | Energy-Harvesting Nodes |
Use Scenario: Recording therapy session history and patient-specific thresholds in disposable ECG patches powered by thin-film batteries. IC Role / Device Role / Timing Role: Secure, low-power nonvolatile memory for regulatory-compliant audit trails; accessed infrequently but must survive power loss. Use Value: 1 μA standby current prevents measurable drain on micro-batteries; RoHS/Pb-free compliance meets medical safety standards. |
Use Scenario: Storing harvested energy state and sensor metadata in solar- or vibration-powered condition-monitoring nodes on rotating machinery. IC Role / Device Role / Timing Role: Power-fail-safe memory holding last known operational state before intermittent power interruption. Use Value: VCC threshold detector disables writes below 1.0V - prevents corruption during brown-out conditions common in energy-harvesting systems. |
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 I²C EEPROM; 1.7–5.5V VCC; includes WP pin; SOIC-8 package | Requires PCB layout change (8-pin SOIC vs. 6-pin SOT-23); WP functionality adds hardware lock capability | Select if write protection is required and board space allows larger package |
| M24C02-RMN6TP | 2 Kbit I²C EEPROM; 1.8–5.5V VCC; no WP pin; SOT-23-6 package; 400 kHz max clock | Same footprint and pinout; higher minimum VCC excludes sub-1.8V operation | Select for cost-sensitive designs where 1.8V minimum supply is acceptable and footprint compatibility is critical |
Compared with 24VL025T/ST, AT24C02D-SSHM-T offers hardware write protection but demands larger board area, while M24C02-RMN6TP matches the SOT-23-6 form factor yet sacrifices 1.5V operation - making 24VL025T/ST uniquely suited for ultra-low-voltage, space-constrained applications.
Availability
24VL025T/ST is available at Aetrix Electronics and suitable for smart wearables, industrial sensors, and medical patch devices requiring stable component supply across extended production lifecycles.
Supply support for 24VL025T/ST 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, FPGA, 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, portable, and energy-harvesting applications where traditional EEPROMs fail to operate.
FAQ
What is the maximum I²C clock frequency supported by the 24VL025T/ST?
The 24VL025T/ST supports up to 400 kHz when VCC is ≥1.8V, and 100 kHz when VCC is between 1.5V and <1.8V. This dual-speed capability ensures reliable communication across its full operating voltage range without requiring external clock dividers or protocol adaptation.
Does the 24VL025T/ST have hardware write protection?
No - the 24VL025T/ST does not implement hardware write protection. The WP pin is not internally connected, unlike the 24VL024 variant. All memory locations are writable whenever the device is powered and addressed, with no physical enable/disable control.
How many 24VL025T/ST devices can be connected on a single I²C bus?
Up to four 24VL025T/ST devices can share one I²C bus. Because the A2 pin is unconnected in the SOT-23 package, only the A0 and A1 pins are used for chip addressing - yielding four unique slave addresses (1010000, 1010001, 1010010, 1010011).
What is the write cycle time for the 24VL025T/ST?
The 24VL025T/ST has a maximum write cycle time of 5 ms for both byte and page writes. During this period, the device does not acknowledge I²C commands - ACK polling is the recommended method to detect write completion without fixed delays.
Is the 24VL025T/ST compatible with standard I²C protocol implementations?
Yes - the 24VL025T/ST is fully I²C™-compatible, supporting standard Start/Stop conditions, 7-bit slave addressing, ACK/NACK handshaking, and read/write protocols including current address, random, and sequential reads - requiring no custom driver modifications.
24VL025T/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm 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:
- 1.5V ~ 3.6V
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24VL025T/ST FAQ
1.How can I place an order for 24VL025T/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL025T/ST 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/ST reliable?
The price and inventory of 24VL025T/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL025T/ST is usually 5 days.
3.What payment methods are accepted for 24VL025T/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL025T/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL025T/ST?
24VL025T/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL025T/ST 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/ST?
For technical support, including 24VL025T/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL025T/ST requirements.
6.How does Aetrix verify that 24VL025T/ST is sourced from the original manufacturer or authorized distributors?
All 24VL025T/ST 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/ST meets industry standards.
7.What is the process for return or replacement of 24VL025T/ST?
All 24VL025T/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24VL025T/ST, 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/ST part is unused and in its original packaging.
Return procedure for 24VL025T/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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