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Microchip Technology 24VL024T/ST
- Part No.:
- 24VL024T/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24VL024T/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,832
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Product details
Overview
24VL024T/ST from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM optimized for ultra-low-voltage operation down to 1.5V, featuring hardware write protection (WP pin), 16-byte page write buffer, and Schmitt-trigger inputs for noise immunity. It delivers ≤400 μA active current and ≤1 μA standby current, enabling use in battery-powered medical sensors and portable instrumentation where power budget and bus reliability are critical.
For engineers reviewing the 24VL024T/ST datasheet, 24VL024T/ST pinout, 24VL024T/ST application, or 24VL024T/ST equivalent, key selection criteria include its 1.5–3.6V supply range, 400 kHz max clock (100 kHz below 1.8V), 8-pin TSSOP package with A0–A2 address pins, WP-enabled hardware lock, and 1 million write cycles with >200-year data retention.
Technical Context
The 24VL024T/ST implements a true 2-wire I²C slave interface with bidirectional SDA and unidirectional SCL, supporting standard-mode (100 kHz) and fast-mode (400 kHz) timing per VCC level. Its internal address counter enables current-address, random, and sequential read operations without external address latching.
It integrates Schmitt-trigger inputs on SDA/SCL with ≥50 ns spike suppression and hysteresis of 0.05×VCC, plus output slope control to minimize ground bounce. The device uses on-chip high-voltage generation for self-timed erase/write cycles (max 5 ms), eliminating external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit array), sufficient for calibration tables or configuration storage in space-constrained designs |
| VCC range | 1.5V to 3.6V - supports direct connection to single-cell Li-ion, NiMH, or coin-cell supplies without regulation |
| Max clock frequency | 400 kHz at VCC ≥ 1.8V; 100 kHz at VCC < 1.8V - ensures reliable timing across full voltage range |
| Write endurance | 1 million erase/write cycles per page - validated for firmware update logging or parameter tuning in field-deployed devices |
| Data retention | 200 years at +25°C - guarantees long-term integrity of stored calibration coefficients or security keys |
| Active/standby current | ≤400 μA active, ≤1 μA standby - enables multi-year operation on 220 mAh coin cells in sleep-dominated applications |
| Hardware write protect | WP pin controls full-array lock (00h–FFh); tied to VCC for permanent protection during system boot or fault conditions |
Pinout & Package
24VL024T/ST is supplied in an 8-pin TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch), RoHS-compliant and Pb-free. Pin 1 is marked by laser dot; body marking includes "4V24", year/week code, and traceability characters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | User-configurable LSB of 3-bit slave address; hardwired to VSS/VCC to enable up to eight devices on one I²C bus |
| A1 | Chip select input | Middle bit of slave address; determines device address offset (e.g., 0x50–0x57) in multi-device systems |
| A2 | Chip select input | MSB of slave address; required for contiguous 16 Kbit expansion across eight devices |
| VSS | Ground reference | Primary return path for all internal logic and I/O; must be low-impedance to support Schmitt-trigger noise rejection |
| SDA | Serial data I/O | Open-drain bidirectional line requiring external pull-up (2 kΩ @ 400 kHz); changes only during SCL low except for Start/Stop |
| SCL | Serial clock input | Unidirectional master-generated clock; synchronizes all address/data transfers and triggers internal timing sequences |
| WP | Write-protect control | Hardware-enforced lock: tied to VCC disables all writes to entire memory array; no software override possible |
| VCC | Power supply | Single 1.5–3.6V rail powers EEPROM core, interface logic, and HV generator; internal threshold detector disables writes below 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-voltage operation | Functional down to 1.5V - eliminates need for voltage translators when interfacing with sub-1.8V MCUs or SoCs |
| Page write buffer | 16-byte burst capability - reduces I²C transaction count by 94% vs. byte-write for full-page updates (e.g., sensor calibration blocks) |
| Noise-immune interface | Schmitt-trigger inputs + 50 ns spike filtering - sustains reliable communication in EMI-heavy environments like motor drives or industrial PLCs |
| Hardware write protection | WP pin locks entire 256-byte array - prevents accidental overwrites during power brownouts or firmware glitches |
| Cascadable architecture | Three address pins (A0–A2) support up to eight devices on one bus - enables scalable nonvolatile storage without additional GPIO or address decoding logic |
Applications
| Medical Wearables | Industrial Sensors |
|---|---|
Use Scenario: Storing patient-specific calibration offsets and usage history in disposable glucose monitors or pulse oximeters powered by CR2032 batteries. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with guaranteed data integrity across 5+ year shelf life and repeated power cycling. Use Value: Enables FDA-compliant traceability and zero-maintenance calibration persistence without external backup capacitors or regulators. |
Use Scenario: Retaining factory-trimmed temperature compensation coefficients and serial ID in RS-485-connected pressure transmitters deployed in oil-field equipment. IC Role / Device Role / Timing Role: I²C slave providing deterministic, low-power parameter storage accessible during cold-start initialization. Use Value: Eliminates manual recalibration after firmware updates and ensures measurement accuracy across -20°C to +85°C operating range. |
| Smart Home Controllers | Automotive Body Modules |
Use Scenario: Holding user-defined scene presets (lighting levels, thermostat schedules) in battery-backed Zigbee gateways with intermittent AC power. IC Role / Device Role / Timing Role: Low-quiescent-current EEPROM accessed via MCU's I²C peripheral during wake-from-sleep events. Use Value: Achieves >10-year battery life while preserving settings through 100,000+ power-loss events without data corruption. |
Use Scenario: Storing door-lock actuator calibration points and anti-pinch thresholds in 12V automotive body control modules with load-dump protection. IC Role / Device Role / Timing Role: Voltage-tolerant nonvolatile memory interfaced directly to 3.3V MCU I²C bus, surviving transient surges up to 6.5V. Use Value: Meets ISO 7637-2 pulse 5a requirements without external clamping, reducing BOM cost and PCB area. |
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 | No hardware WP pin; write protection implemented via software lock bits only | Lacks physical write-disable during power faults; requires MCU firmware coordination for secure updates | Choose when design already uses Atmel-compatible I²C stack and WP functionality is not safety-critical |
| BR24G02FJ-WE2 | Supports 1.7–5.5V VCC; includes write-cycle interrupt (INT) pin not present on 24VL024T/ST | Enables real-time write completion signaling instead of ACK polling; wider voltage margin simplifies supply design | Prefer when integrating with 5V-tolerant microcontrollers or requiring deterministic write-status feedback without bus polling overhead |
Compared with AT24C02D-SSHM-T and BR24G02FJ-WE2, the 24VL024T/ST uniquely combines sub-1.8V operation, hardware WP, and Schmitt-trigger noise immunity - making it optimal for ultra-low-power, safety-critical, or electrically noisy embedded systems where deterministic write protection and robust bus timing are mandatory.
Availability
24VL024T/ST is available at Aetrix Electronics and suitable for medical wearables, industrial sensors, smart home controllers, and automotive body modules requiring stable component supply across extended product lifecycles.
Supply support for 24VL024T/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 microcontroller, analog, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24VL024T/ST belongs to Microchip's low-voltage serial EEPROM product line, engineered specifically for energy-constrained and noise-prone applications in portable, industrial, and automotive electronics where reliability under marginal supply conditions is essential.
FAQ
What is the minimum operating voltage for the 24VL024T/ST?
The 24VL024T/ST operates down to 1.5V, with guaranteed functionality across its full 1.5–3.6V VCC range. At VCC < 1.8V, maximum I²C clock frequency is limited to 100 kHz to maintain timing compliance. This enables direct integration with single-cell lithium or alkaline batteries without voltage regulation.
Does the 24VL024T/ST support page write operations?
Yes, the 24VL024T/ST supports page write operations with a 16-byte buffer. After transmitting the word address, the master may send up to 15 additional bytes before issuing a Stop condition; all are written atomically in one internal cycle. Page boundaries align to 16-byte intervals (0x00–0x0F, 0x10–0x1F, etc.), and crossing boundaries causes wraparound within the same page.
How does hardware write protection work on the 24VL024T/ST?
The 24VL024T/ST uses the WP pin for hardware write protection: when tied to VCC, the entire 256-byte memory array (00h–FFh) is locked against all write and page-write commands. The device acknowledges the command but ignores data. Protection remains active regardless of VCC state or I²C activity, providing fail-safe lock during power transitions.
What packages are available for the 24VL024T/ST?
The 24VL024T/ST is offered exclusively in an 8-pin TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch), with Pb-free and RoHS-compliant construction. Unlike the 24VL024 family's PDIP, SOIC, MSOP, and TDFN variants, the "T/ST" suffix denotes this specific TSSOP configuration with standardized laser-marked top-side identification.
Can multiple 24VL024T/ST devices share the same I²C bus?
Yes, up to eight 24VL024T/ST devices can operate on a single I²C bus using the A0, A1, and A2 address pins to configure unique 3-bit chip select codes (0x50–0x57). Each device responds only to its assigned address, enabling scalable nonvolatile storage without address conflicts or additional bus arbitration hardware.
24VL024T/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
24VL024T/ST FAQ
1.How can I place an order for 24VL024T/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL024T/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 24VL024T/ST reliable?
The price and inventory of 24VL024T/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL024T/ST is usually 5 days.
3.What payment methods are accepted for 24VL024T/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL024T/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL024T/ST?
24VL024T/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL024T/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 24VL024T/ST?
For technical support, including 24VL024T/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL024T/ST requirements.
6.How does Aetrix verify that 24VL024T/ST is sourced from the original manufacturer or authorized distributors?
All 24VL024T/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 24VL024T/ST meets industry standards.
7.What is the process for return or replacement of 24VL024T/ST?
All 24VL024T/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24VL024T/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 24VL024T/ST part is unused and in its original packaging.
Return procedure for 24VL024T/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24VL024T/ST Tags
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AT24C02C-XHM-T
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AT21CS01-STUM10-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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