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Microchip Technology 24VL025/ST
- Part No.:
- 24VL025/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24VL025/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,711
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Product details
Overview
24VL025/ST from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM designed for low-voltage embedded systems. It operates from 1.5V to 3.6V, draws ≤400 μA active current and ≤1 μA standby current, supports up to 400 kHz clock (100 kHz below 1.8V), and features 16-byte page write capability. It is used in battery-powered sensor nodes and portable medical devices for nonvolatile configuration storage.
For engineers reviewing the 24VL025/ST datasheet, 24VL025/ST pinout, 24VL025/ST application, or 24VL025/ST equivalent, key selection criteria include its 1.5V minimum VCC, SOT-23 6-pin footprint, absence of WP pin, and compatibility with I²C bus timing at both 100 kHz and 400 kHz across voltage ranges.
Technical Context
The 24VL025/ST implements a standard I²C slave interface with Schmitt-triggered SDA/SCL inputs and internal noise filtering (50 ns spike suppression). Its memory array is organized as 256 × 8-bit with an auto-incrementing address pointer supporting current-address, random, and sequential read modes.
Write operations use a 16-byte page buffer and self-timed erase/write cycles (max 5 ms). Unlike the 24VL024, the 24VL025 omits the WP pin - hardware write protection is not implemented - and excludes A2 in its SOT-23 package, limiting cascading to four devices per bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit) - provides sufficient space for calibration data, device IDs, or small firmware patches in resource-constrained systems |
| VCC Range | 1.5V to 3.6V - enables direct interfacing with single-cell Li-ion, NiMH, or coin-cell power sources without regulation |
| Max Clock Frequency | 400 kHz (≥1.8V), 100 kHz (<1.8V) - ensures reliable communication across wide supply range while maintaining timing compliance |
| Active Current | ≤400 μA at 3.6V, 400 kHz - minimizes system power budget during frequent read/write cycles |
| Standby Current | ≤1 μA at 3.6V - extends battery life in always-on monitoring applications |
| Endurance | 1 million erase/write cycles - supports long-term field deployment with daily configuration updates |
| Data Retention | 200 years at +25°C - guarantees data integrity over full product lifecycle without refresh |
Pinout & Package
24VL025/ST is supplied in a Pb-free, RoHS-compliant 6-lead SOT-23 package (3.0 mm × 1.7 mm × 1.3 mm body). The WP pin is omitted; A2 is unconnected. Pin 1 is marked by laser dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip Select Input | Configures LSB of I²C slave address (1010xx0); must be hard-wired to VSS or VCC for stable addressing |
| A1 | Chip Select Input | Configures middle bit of I²C slave address; enables up to four 24VL025/ST devices on one bus |
| VSS | Ground Reference | Return path for all internal logic and I/O; requires low-impedance connection to system ground plane |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ @ 400 kHz); changes only during SCL low |
| SCL | Serial Clock Input | Master-generated clock synchronizing all transfers; Schmitt-trigger input rejects <50 ns noise spikes |
| VCC | Power Supply | Accepts 1.5–3.6V; internal voltage detector disables writes if VCC drops below ~1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.5V - eliminates need for level shifters when interfacing with sub-1.8V microcontrollers |
| Page Write Buffer | 16-byte buffer reduces I²C transaction count for multi-byte writes, improving bus efficiency and reducing master CPU overhead |
| Schmitt Trigger Inputs | 0.05×VCC hysteresis on SDA/SCL - prevents false triggering from EMI or ground bounce in noisy industrial environments |
| Noise Immunity | 50 ns input filter + hysteresis - allows reliable operation on shared PCB traces without additional RC filtering |
| Cascadability | Up to four 24VL025/ST devices per I²C bus via A0/A1 address bits - simplifies multi-sensor node design with unified bus topology |
Applications
| Wearable Health Monitor | Smart Home Sensor Hub |
|---|---|
Use Scenario: Stores user-specific calibration offsets and usage history in a wrist-worn ECG module powered by a CR2032 coin cell. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with infrequent writes and frequent reads; no real-time timing function. Use Value: 1.5V operation enables direct CR2032 use; 1 μA standby current extends battery life beyond 2 years. |
Use Scenario: Holds network credentials, sensor thresholds, and firmware update flags in a Zigbee-enabled temperature/humidity hub. IC Role / Device Role / Timing Role: Persistent parameter storage accessed during boot and OTA updates; no clock generation or timing control. Use Value: 400 kHz I²C speed accelerates credential loading; 1M endurance supports 10+ years of daily OTA retries. |
| Industrial PLC I/O Module | Portable Diagnostic Tool |
Use Scenario: Saves channel scaling factors and fault log timestamps in a DIN-rail mounted analog input module operating from 3.3V rail. IC Role / Device Role / Timing Role: Configuration and event logging memory; interfaces exclusively via I²C under host MCU control. Use Value: Schmitt-trigger inputs reject noise from adjacent 24V solenoid drivers; 200-year data retention meets industrial audit requirements. |
Use Scenario: Stores calibration coefficients and last-test results in a handheld multimeter using a single AA alkaline cell. IC Role / Device Role / Timing Role: Parameter storage with write-on-exit behavior; no interrupt or autonomous timing functions. Use Value: 1.5V minimum VCC allows operation until battery reaches 1.55V; 16-byte page writes minimize timeout risk during low-battery brownout. |
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 range; includes WP pin; SOIC-8 package only | Requires ≥1.7V supply; WP pin enables hardware lock; incompatible SOT-23 footprint | Select if WP functionality is required and board layout accommodates SOIC-8 |
| M95020-WMN6TP | 2 Kbit SPI EEPROM; 1.8–5.5V VCC; 6-lead TSSOP; no WP pin; 20 MHz max clock | Different interface (SPI vs I²C); higher minimum voltage; faster write but requires separate CS signal | Select if system uses SPI peripherals and can allocate dedicated chip select line |
Compared with 24VL025/ST, AT24C02D-SSHM-T adds write protection but raises minimum VCC to 1.7V and requires SOIC-8 layout; M95020-WMN6TP offers SPI interface and higher speed but lacks I²C compatibility and 1.5V operation - neither is pin- or protocol-compatible.
Availability
24VL025/ST is available at Aetrix Electronics and suitable for wearable electronics, smart home sensors, industrial I/O modules, and portable diagnostic tools requiring stable component supply across extended production lifecycles.
Supply support for 24VL025/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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24VL024/24VL025 family was developed specifically for ultra-low-voltage, low-power embedded systems where battery life and supply flexibility are critical - targeting portable, medical, and energy-harvesting applications.
FAQ
What is the minimum operating voltage for the 24VL025/ST?
The 24VL025/ST operates down to 1.5V across its full temperature range (–20°C to +85°C). Below 1.8V, maximum I²C clock frequency is limited to 100 kHz to ensure timing compliance. This 1.5V minimum enables direct integration with single-cell batteries and low-voltage MCUs without regulators - a key differentiator from most competing EEPROMs.
Does the 24VL025/ST have a write-protect (WP) pin?
No, the 24VL025/ST does not include a WP pin. The WP function is present only on the 24VL024 variant. In the 24VL025/ST, hardware write protection is omitted - all memory locations are writable whenever the device is powered and addressed correctly. Software-based protection must be implemented externally if needed.
How many 24VL025/ST devices can be connected to a single I²C bus?
Up to four 24VL025/ST devices can share one I²C bus. Because the SOT-23 package lacks the A2 pin, only A0 and A1 are available for slave address configuration, yielding four unique combinations (00, 01, 10, 11). Each device must have distinct A0/A1 connections to VSS or VCC to avoid address collisions on the 24VL025/ST bus.
What is the page write size for the 24VL025/ST?
The 24VL025/ST supports a 16-byte page write buffer. When performing a page write, the master sends a start condition, control byte, word address, and up to 16 data bytes before issuing a stop condition - all within one I²C transaction. Writes crossing physical page boundaries (every 16 bytes) wrap around instead of advancing, so software must align addresses accordingly.
Is the 24VL025/ST RoHS compliant and lead-free?
Yes, the 24VL025/ST is Pb-free and RoHS compliant. Its SOT-23 package uses matte tin (Sn) plating per JEDEC standards. Marking includes "e3" designation on packaging reels and cartons. Full compliance documentation, including test reports and substance declarations, is available through Microchip's official website and authorized distributors.
24VL025/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- 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:
- 1.5V ~ 3.6V
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24VL025/ST FAQ
1.How can I place an order for 24VL025/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL025/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 24VL025/ST reliable?
The price and inventory of 24VL025/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL025/ST is usually 5 days.
3.What payment methods are accepted for 24VL025/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL025/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL025/ST?
24VL025/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL025/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 24VL025/ST?
For technical support, including 24VL025/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL025/ST requirements.
6.How does Aetrix verify that 24VL025/ST is sourced from the original manufacturer or authorized distributors?
All 24VL025/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 24VL025/ST meets industry standards.
7.What is the process for return or replacement of 24VL025/ST?
All 24VL025/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24VL025/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 24VL025/ST part is unused and in its original packaging.
Return procedure for 24VL025/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24VL025/ST Tags
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M24C02-WMN6TP
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AT24C02C-XHM-T
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AT21CS01-STUM10-T
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AT24C02C-SSHM-T
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24LC01BT-I/OT
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M24C02-FMC6TG
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AT24CS02-SSHM-T
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93LC46BT-I/OT
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AT24C04C-SSHM-T
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24LC01BT-I/SN
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24AA02UIDT-I/OT
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AT24C08C-STUM-T
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