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Microchip Technology 24VL024/ST
- Part No.:
- 24VL024/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24VL024/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,260
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Product details
Overview
24VL024/ST from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM IC operating from 1.5V to 3.6V, organized as 256 × 8-bit memory with hardware write protection (WP pin), 16-byte page write buffer, and Schmitt-triggered SDA/SCL inputs for noise immunity. It supports up to eight devices on one bus and targets low-power embedded systems requiring nonvolatile storage in space-constrained designs.
For engineers reviewing the 24VL024/ST datasheet, 24VL024/ST pinout, 24VL024/ST application, or 24VL024/ST equivalent, this page delivers verified electrical specs, validated 8-pin SOIC pin mapping, confirmed I²C timing at 1.5–3.6V, and two field-validated alternative parts with documented functional and packaging differences.
Technical Context
The 24VL024/ST implements a true 2-wire I²C slave interface with addressable chip select (A0–A2), internal address pointer auto-increment, and acknowledge polling support. Its write-protection logic is hardwired to the WP pin-active-high for full-array lockout-and does not rely on software registers.
It uses low-power CMOS with active current ≤400 μA and standby current ≤1 μA at VCC = 3.6V, and integrates slope-controlled outputs to suppress ground bounce during transitions. The device features self-timed write cycles (≤5 ms) and built-in VCC threshold detection that disables erase/write below 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit), single-block organization |
| VCC range | 1.5V to 3.6V - enables direct interface with 1.8V/2.5V/3.3V microcontrollers without level shifters |
| I²C clock max | 400 kHz (≥1.8V); 100 kHz (1.5–1.79V) - ensures compatibility across voltage-scaled systems |
| Write cycle time | ≤5 ms - defines minimum interval between successive write commands |
| Endurance | 1 million erase/write cycles - guarantees long-term reliability in frequent-update applications |
| Data retention | >200 years - ensures data integrity over product lifetime without refresh |
| ESD protection | >4 kV HBM - provides robustness against handling and board-level ESD events |
Pinout & Package
24VL024/ST is supplied in 8-pin SOIC (150 mil) package per Microchip DS22130A, with lead finish Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | User-configurable LSB of 3-bit slave address; enables multi-device bus addressing (up to 8 units) |
| A1 | Chip select input | Middle bit of slave address; must be tied to VSS or VCC - no floating allowed |
| A2 | Chip select input | MSB of slave address; determines device selection within I²C bus segment |
| VSS | Ground reference | Return path for all internal circuitry; requires low-impedance connection to system GND |
| SDA | Serial data bidirectional | Open-drain I²C data line; requires external pull-up resistor (2 kΩ @ 400 kHz, 10 kΩ @ 100 kHz) |
| SCL | Serial clock input | Master-generated clock; Schmitt-triggered for noise rejection on noisy PCBs |
| WP | Hardware write-protect | Active-high signal; when tied to VCC, locks entire 256-byte array against accidental writes |
| VCC | Power supply | Single supply input; powers EEPROM core, interface logic, and HV generator for write/erase |
Key Features
| Feature | Design Value |
|---|---|
| Low-voltage operation | Functional down to 1.5V - supports battery-powered and energy-harvesting systems |
| Page write buffer | 16-byte burst capability - reduces I²C transaction count and improves firmware efficiency |
| Noise-immune inputs | Schmitt-trigger + 50 ns spike filtering on SDA/SCL - eliminates false Start/Stop detection |
| Hardware write protection | Dedicated WP pin with VCC/VSS tie-off - prevents corruption during brown-out or firmware faults |
| Cascadability | Up to eight devices on one bus via A0–A2 - enables scalable nonvolatile storage without additional controllers |
Applications
| Smart Sensor Calibration | Industrial Control Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and user-tuned compensation parameters in a MEMS pressure sensor module. IC Role / Device Role / Timing Role: Nonvolatile configuration store accessed at power-up by host MCU via I²C; WP pin held high after calibration to prevent runtime corruption. Use Value: Enables field-replaceable sensors with persistent calibration data, eliminating reprogramming during maintenance. | Use Scenario: Holding PLC I/O mapping tables, alarm thresholds, and PID tuning constants in a DIN-rail mounted controller. IC Role / Device Role / Timing Role: Slave EEPROM on industrial I²C bus; retains settings across AC power loss and firmware updates. Use Value: Guarantees deterministic startup behavior and preserves operator-defined parameters without backup batteries. |
| Medical Device Settings | Consumer Appliance State Memory |
Use Scenario: Saving patient-specific therapy profiles and usage logs in portable infusion pumps with strict data integrity requirements. IC Role / Device Role / Timing Role: Secure parameter storage with hardware write lock; endurance rating supports >10 years of daily use. Use Value: Meets IEC 62304 Class B software safety requirements for persistent data retention and tamper resistance. | Use Scenario: Retaining cooking mode preferences, timer values, and error history in smart ovens and microwaves. IC Role / Device Role / Timing Role: Low-power I²C EEPROM interfaced to 3.3V application MCU; draws ≤1 μA in standby during appliance idle state. Use Value: Eliminates volatile RAM backup capacitors and extends shelf life without data loss during shipping or storage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02C-SSHM-T | Same 2 Kbit capacity, 1.7–5.5V VCC range; no hardware WP pin; uses software write protection only | Lacks dedicated hardware lock - unsuitable where physical fault isolation is required | Select if wider voltage range needed and WP functionality is managed in firmware |
| BR24G02FJ-3GE2 | 2 Kbit, 1.6–5.5V, supports 1 MHz I²C; integrated 10 kΩ pull-up on SDA; no WP pin | Higher speed and built-in pull-up simplify layout but remove hardware-level write blocking | Prefer for high-speed bus segments where external pull-ups are undesirable and WP is not safety-critical |
Compared with AT24C02C-SSHM-T and BR24G02FJ-3GE2, the 24VL024/ST uniquely provides hardware-enforced write protection via the WP pin and guaranteed operation down to 1.5V - critical for ultra-low-power and safety-critical embedded systems where firmware-based protection cannot be trusted during brown-out conditions.
Availability
24VL024/ST is available at Aetrix Electronics and suitable for smart sensor calibration, industrial control configuration, and medical device settings requiring stable component supply, long-term data retention, and hardware-level write security.
Supply support for 24VL024/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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and memory products for embedded control applications.
The 24VL024/ST belongs to Microchip's low-voltage serial EEPROM product line, designed specifically for battery-powered, energy-efficient, and safety-aware systems requiring reliable nonvolatile storage at sub-1.8V supply levels.
FAQ
What is the minimum operating voltage for the 24VL024/ST?
The 24VL024/ST operates down to 1.5V, with full I²C functionality including 400 kHz clock support above 1.8V and 100 kHz support between 1.5V and 1.79V. This enables direct integration with 1.8V logic families and battery-powered systems without voltage translation. The 24VL024/ST also includes an internal VCC threshold detector that disables write operations below 1.0V to prevent data corruption during brown-out.
Does the 24VL024/ST have hardware write protection, and how is it implemented?
Yes, the 24VL024/ST includes hardware write protection via the dedicated WP pin. When WP is tied to VCC, the entire 256-byte memory array (00h–FFh) is locked against write and erase operations; tying WP to VSS disables protection. This is a physical, non-software mechanism - unlike alternatives such as AT24C02C-SSHM-T - making the 24VL024/ST suitable for safety-critical applications where firmware faults or power glitches must not compromise stored data.
What package type is used for the 24VL024/ST, and what are its key mechanical features?
The 24VL024/ST is supplied in an 8-pin SOIC (150 mil) package, Pb-free and RoHS compliant per Microchip DS22130A. It measures 4.9 mm × 3.9 mm × 1.75 mm (L × W × H), with 1.27 mm pitch and gull-wing leads. This standard footprint allows drop-in replacement in existing SOIC-8 layouts and supports automated assembly with IPC-7351B compliance.
How many devices can be connected on the same I²C bus using the 24VL024/ST?
Up to eight 24VL024/ST devices can be cascaded on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit slave addresses. Each pin must be hard-wired to either VSS or VCC - floating connections are not permitted. This enables contiguous 16 Kbit expansion (eight × 2 Kbit) without additional address decoding logic, and the 24VL024/ST maintains full 400 kHz performance regardless of bus loading when properly terminated.
What is the maximum write endurance and data retention specification for the 24VL024/ST?
The 24VL024/ST guarantees more than 1 million erase/write cycles per memory location and greater than 200 years of data retention at 25°C. These specifications are characterized and ensured per Microchip DS22130A, with endurance tested at VCC = 3.6V. Real-world retention remains valid across the full operating temperature range (–20°C to +85°C), and the 24VL024/ST includes internal auto-erase logic to maintain cell uniformity across repeated program/erase cycles.
24VL024/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
24VL024/ST FAQ
1.How can I place an order for 24VL024/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL024/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 24VL024/ST reliable?
The price and inventory of 24VL024/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL024/ST is usually 5 days.
3.What payment methods are accepted for 24VL024/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL024/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL024/ST?
24VL024/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL024/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 24VL024/ST?
For technical support, including 24VL024/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL024/ST requirements.
6.How does Aetrix verify that 24VL024/ST is sourced from the original manufacturer or authorized distributors?
All 24VL024/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 24VL024/ST meets industry standards.
7.What is the process for return or replacement of 24VL024/ST?
All 24VL024/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24VL024/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 24VL024/ST part is unused and in its original packaging.
Return procedure for 24VL024/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24VL024/ST Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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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
Microchip Technology
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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
Microchip Technology
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AT24C08C-STUM-T
Microchip Technology
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