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Microchip Technology 24VL024H/P
- Part No.:
- 24VL024H/P
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
24VL024H/P.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
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Product details
Overview
24VL024H from Microchip Technology Inc. is a 2 Kbit (256 × 8) 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 I²C clock (100 kHz below 1.8V), and features hardware write-protection for the upper half-array (80h–FFh). It is used in battery-powered sensors, smart meters, and configuration storage where extended data retention (>200 years) and ultra-low power are critical.
For engineers reviewing the 24VL024H datasheet, 24VL024H pinout, 24VL024H application, or 24VL024H equivalent, this page delivers verified electrical specs, validated I²C timing constraints, confirmed package mappings across PDIP/SOIC/TSSOP/MSOP/TDFN, real-world endurance (1 million cycles), and precise hardware write-protect behavior - all directly traceable to Microchip DS22109A.
Technical Context
The 24VL024H implements a true I²C slave interface with Schmitt-triggered SDA/SCL inputs, internal VCC threshold detection (<1.2V disable), and open-drain SDA requiring external pull-up. Its address decoding uses A0–A2 pins to support up to eight devices on one bus, enabling contiguous 16 Kbit expansion via software-managed address bit mapping (A9–A11).
Write operations include byte-write and 16-byte page-write with self-timed erase/write cycles (max 5 ms), while read modes support current-address, random, and sequential access. Acknowledge polling is supported to detect write completion without fixed delays, and WP pin logic (VCC = protect 80h–FFh; VSS = full write enable) is electrically validated per DC specs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.5V to 3.6V - Enables direct integration into single-cell Li-ion, coin-cell, or energy-harvesting systems without level-shifting. |
| Memory Size | 2 Kbit (256 × 8) - Provides sufficient nonvolatile storage for calibration data, device IDs, or firmware flags in compact edge nodes. |
| I²C Speed | Up to 400 kHz (≥1.8V); 100 kHz (<1.8V) - Matches standard and fast-mode I²C controllers while maintaining noise immunity at low voltage. |
| Write Endurance | 1 million erase/write cycles - Supports frequent logging or parameter updates over product lifetime without wear-out risk. |
| Data Retention | 200+ years - Guarantees long-term integrity of stored configuration or calibration values in unpowered storage. |
| Active Current | ≤400 μA at 3.6V/400 kHz - Minimizes system power budget during active reads/writes in always-on monitoring applications. |
| Standby Current | ≤1 μA at 3.6V - Enables multi-year operation on microampere-scale energy sources like supercapacitors or harvested ambient energy. |
Pinout & Package
Available in 8-pin PDIP, SOIC (150 mil), TSSOP, MSOP, and 2×3 mm TDFN packages - all sharing identical pin mapping and functional assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0, A1, A2 | Chip Select Inputs | Hard-wired address bits enabling up to eight 24VL024H devices on one I²C bus; must be stable before communication begins. |
| VSS | Ground Reference | Primary return path for all internal logic and I/O; requires low-impedance connection to system ground plane. |
| SDA | Serial Data Bidirectional Line | Open-drain I²C data line requiring external pull-up (2 kΩ @ 400 kHz); changes only during SCL low except for Start/Stop conditions. |
| SCL | Serial Clock Input | Master-generated clock synchronizing all data transfers; includes Schmitt trigger and spike filtering for robust noise immunity. |
| WP | Hardware Write-Protect Input | Logic-high (VCC) enables protection of memory addresses 80h–FFh; logic-low (VSS) disables protection for full-array writes. |
| VCC | Power Supply | Single supply input supporting 1.5–3.6V operation; internal voltage detector disables writes below ~1.2V to prevent corruption. |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Operation | Functional down to 1.5V - Eliminates need for voltage regulators in 1.8V or lower MCU subsystems. |
| Schmitt Trigger Inputs | SDA/SCL hysteresis ≥0.05×VCC - Rejects >50 ns noise spikes without external RC filtering, simplifying PCB layout. |
| Page Write Buffer | 16-byte buffer - Reduces I²C transaction overhead by up to 15× vs. byte-write for block updates (e.g., sensor calibration tables). |
| Half-Array Hardware WP | Physically protects 128 bytes (80h–FFh) when WP = VCC - Safeguards critical firmware parameters against accidental overwrite. |
| Cascadability | Eight-device bus support - Enables scalable EEPROM capacity (up to 16 Kbit) using standard I²C addressing without additional logic. |
Applications
| Smart Energy Meters | Industrial Sensor Nodes |
|---|---|
Use Scenario: Storing tariff schedules, meter calibration coefficients, and tamper-event logs in utility-grade electricity meters operating from 1.8V backup rails. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-log storage with guaranteed 200-year data retention and 1M-cycle endurance under daily update cycles. Use Value: Eliminates need for external voltage supervisors or backup capacitors due to 1.5V operation and built-in VCC threshold lockout. |
Use Scenario: Retaining factory-calibrated offset/gain values and node-specific MAC addresses in wireless temperature/humidity sensors powered by coin cells. IC Role / Device Role / Timing Role: Low-power I²C slave storing immutable device identity and calibrated sensor parameters across power cycles. Use Value: Achieves <1 μA standby draw, extending 2032 coin-cell life beyond 10 years while maintaining I²C compatibility with host MCUs. |
| Medical Wearables | Automotive Body Controllers |
Use Scenario: Saving user preferences, therapy settings, and usage history in portable ECG monitors powered by rechargeable Li-Poly batteries. IC Role / Device Role / Timing Role: Secure, low-energy configuration store interfaced via I²C to ARM Cortex-M0+ host with minimal GPIO overhead. Use Value: Hardware write-protection (WP = VCC) prevents runtime corruption of FDA-mandated safety-critical settings during firmware updates. |
Use Scenario: Storing seat-position memory, mirror presets, and lighting profiles in 12V automotive body control modules with local 3.3V regulation. IC Role / Device Role / Timing Role: Robust I²C EEPROM tolerant of load-dump transients and wide-temp operation (−20°C to +85°C). Use Value: Schmitt-triggered SDA/SCL and >4 kV ESD rating ensure reliable communication in noisy vehicle electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA024H | Same 2 Kbit capacity and pinout, but rated for 1.8–5.5V operation - lacks sub-1.8V functionality and has higher 1 mA active current. | Not suitable for 1.5V systems; requires level-shifting or regulator if interfacing with ultra-low-voltage MCUs. | Select 24AA024H only when system VCC ≥1.8V and higher speed (1 MHz) or wider voltage margin is needed. |
| AT24C02D-SSHM-T | 2 Kbit I²C EEPROM with 1.7–5.5V range, 400 kHz max, and 1 million cycle endurance - no half-array hardware WP; uses software write-protect only. | Lacks dedicated WP pin; relies on software lock bits, increasing firmware complexity and vulnerability to reset-induced corruption. | Choose AT24C02D only when cost optimization outweighs need for hardware-level write protection and 1.5V operation. |
Compared with 24AA024H and AT24C02D-SSHM-T, the 24VL024H uniquely delivers verified 1.5V operation, hardware-enforced half-array protection, and sub-1 μA standby - making it the only choice for energy-constrained, safety-critical, or single-supply designs requiring guaranteed low-voltage reliability.
Availability
24VL024H is available at Aetrix Electronics and suitable for smart energy meters, industrial sensor nodes, medical wearables, and automotive body controllers requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for 24VL024H 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 24VL024H belongs to Microchip's low-voltage serial EEPROM product line, engineered specifically for battery-powered, energy-harvesting, and ultra-low-power embedded systems demanding extended data retention and robust I²C interoperability.
FAQ
What is the minimum operating voltage for the 24VL024H?
The 24VL024H operates down to 1.5V - verified in DS22109A Section 1.0 and Device Selection Table. Below 1.8V, maximum I²C clock frequency reduces to 100 kHz to maintain timing margins. Internal VCC threshold detection disables write operations below ~1.2V to prevent data corruption, ensuring safe operation across its full 1.5–3.6V range.
How does hardware write-protection work on the 24VL024H?
When the WP pin is tied to VCC, the 24VL024H hardware write-protects memory addresses 80h–FFh (128 bytes), allowing writes only to 00h–7Fh. If WP is tied to VSS, full-array writes are enabled. This protection is active during all operations and cannot be overridden by software commands - a key differentiator from software-only lock bits found in alternatives like AT24C02D.
Can multiple 24VL024H devices share the same I²C bus?
Yes - up to eight 24VL024H devices can operate on one I²C bus using unique combinations of A0, A1, and A2 pins. Each device responds only to its assigned 7-bit slave address (1010xxxA), enabling contiguous 16 Kbit memory expansion. Software must manage address bit mapping (A9–A11) to avoid crossing device boundaries during sequential reads.
What is the maximum write cycle time for the 24VL024H?
The 24VL024H specifies a maximum write cycle time of 5 ms for both byte and page writes - confirmed in DS22109A Table 1-2, Parameter TWC. This includes auto-erase and programming; no external delay is required. Acknowledge polling (sending repeated Start + control byte) is the recommended method to detect completion without fixed timing waits.
Which packages are available for the 24VL024H?
The 24VL024H is offered in five industry-standard 8-pin packages: PDIP (300 mil), SOIC (150 mil), TSSOP, MSOP, and 2×3 mm TDFN - all with identical pinout and electrical characteristics per DS22109A Section 9.0 and Pin Function Table. Package selection depends on board space, thermal requirements, and assembly process (e.g., TDFN for high-density layouts).
24VL024H/P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
24VL024H/P FAQ
1.How can I place an order for 24VL024H/P through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL024H/P 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 24VL024H/P reliable?
The price and inventory of 24VL024H/P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL024H/P is usually 5 days.
3.What payment methods are accepted for 24VL024H/P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL024H/P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL024H/P?
24VL024H/P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL024H/P 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 24VL024H/P?
For technical support, including 24VL024H/P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL024H/P requirements.
6.How does Aetrix verify that 24VL024H/P is sourced from the original manufacturer or authorized distributors?
All 24VL024H/P 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 24VL024H/P meets industry standards.
7.What is the process for return or replacement of 24VL024H/P?
All 24VL024H/P units undergo pre-shipment inspection (PSI). If there is an issue with 24VL024H/P, 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 24VL024H/P part is unused and in its original packaging.
Return procedure for 24VL024H/P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24VL024H/P 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
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
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AT24C08C-STUM-T
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