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Microchip Technology 24VL024/SN
- Part No.:
- 24VL024/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24VL024/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:436
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Product details
Overview
24VL024/SN from Microchip Technology Inc. is a 2 Kbit (256 × 8) I²C-compatible serial EEPROM optimized for ultra-low-voltage operation down to 1.5 V, featuring hardware write protection (WP pin), 400 μA max active current, and 1 μA max standby current. It supports cascading up to eight devices on one bus and delivers >1 million erase/write cycles with >200 years data retention - deployed in battery-powered sensor nodes and portable medical diagnostics.
For engineers reviewing the 24VL024/SN datasheet, 24VL024/SN pinout, 24VL024/SN application, or 24VL024/SN equivalent, key selection criteria include its 1.5–3.6 V supply range, 400 kHz I²C clock support (100 kHz below 1.8 V), Schmitt-trigger noise immunity on SDA/SCL, page-write buffer (up to 16 bytes), and hardware write-protection capability exclusive to the 24VL024 variant.
Technical Context
The 24VL024/SN implements a true two-wire I²C slave interface with open-drain SDA/SCL pins, internal address pointer auto-increment, and acknowledge polling for write-cycle completion detection. Its memory array is organized as a single 256-word block with byte- and page-write modes, where page boundaries align to 16-byte increments and wrap on overflow.
Hardware write protection is enabled only when the WP pin is tied high (VCC); this locks the full 00h–FFh address space. The device integrates Schmitt-trigger inputs and input filtering (50 ns spike suppression) to maintain reliable communication on noisy PCBs, and features slope-controlled outputs to minimize ground bounce during transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit array), enabling compact nonvolatile storage for calibration data or device configuration |
| VCC operating range | 1.5 V to 3.6 V - supports direct connection to Li-ion coin cells and low-power microcontrollers without level shifting |
| I²C clock frequency | Up to 400 kHz (100 kHz when VCC < 1.8 V) - balances speed and noise immunity in mixed-signal environments |
| Write endurance | ≥1 million erase/write cycles per page - suitable for frequent logging or parameter updates in field-deployed equipment |
| Data retention | >200 years at +25°C - ensures long-term reliability in unattended infrastructure monitoring systems |
| Standby current | ≤1 μA at VCC = 3.6 V - critical for multi-year battery life in wireless sensor endpoints |
| Page write buffer | 16-byte buffer - reduces I²C transaction count and host CPU overhead when updating consecutive memory locations |
Pinout & Package
24VL024/SN is supplied in an 8-pin SOIC (150 mil) package, with lead finish Pb-free and RoHS-compliant. Pin 1 is marked by laser dot; body dimensions are 3.9 mm × 4.9 mm × 1.75 mm (max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | Configures LSB of I²C slave address (1010A2A1A0R/W); enables up to eight devices on same bus |
| A1 | Chip select input | Configures middle bit of slave address; must be hard-wired to VSS or VCC for static addressing |
| A2 | Chip select input | Configures MSB of slave address; determines unique device identity in multi-drop I²C topology |
| VSS | Ground reference | Return path for all internal logic and I/O; requires low-impedance connection to system GND plane |
| SDA | Serial data bidirectional line | Open-drain I²C data line requiring external pull-up (2 kΩ @ 400 kHz); changes only during SCL low |
| SCL | Serial clock input | Master-generated clock synchronizing all read/write transfers; includes Schmitt trigger and noise filter |
| WP | Hardware write-protect input | Active-high signal disabling all writes to entire memory array when tied to VCC (24VL024 only) |
| VCC | Power supply | Single 1.5–3.6 V supply powering EEPROM core and interface; internal voltage detector disables writes below ~1.0 V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-voltage operation | Functional down to 1.5 V - eliminates need for voltage regulators in energy-harvesting or coin-cell applications |
| Hardware write protection | Dedicated WP pin (24VL024 only) provides tamper-resistant memory locking independent of software control |
| Noise-immune I²C interface | Schmitt-trigger inputs + 50 ns input filtering on SDA/SCL - sustains reliable communication in EMI-heavy industrial settings |
| Self-timed write cycle | Internal 5 ms max write time with auto-erase - relieves host MCU of timing-critical wait states during programming |
| Cascadable architecture | Three address pins (A0–A2) allow up to eight 24VL024/SN devices on one I²C bus for scalable 16 Kbit contiguous storage |
Applications
| Smart Energy Meters | Portable Medical Devices |
|---|---|
Use Scenario: Storing tariff tables, firmware checksums, and usage logs in utility-grade electricity meters with 10+ year field life. IC Role / Device Role / Timing Role: Nonvolatile configuration and event-log storage with guaranteed data integrity across power cycles and temperature extremes. Use Value: Hardware write protection prevents accidental or malicious overwrites of critical billing parameters during field updates. |
Use Scenario: Retaining patient calibration profiles and diagnostic history in handheld glucose monitors powered by CR2032 batteries. IC Role / Device Role / Timing Role: Low-power persistent memory for user-specific settings and measurement history between intermittent use. Use Value: 1 μA standby current extends battery life beyond 5 years while maintaining secure, error-free data retention. |
| Industrial Sensor Nodes | Automotive Body Controllers |
Use Scenario: Recording sensor offset corrections and environmental compensation coefficients in wireless vibration sensors mounted on rotating machinery. IC Role / Device Role / Timing Role: Field-programmable calibration storage accessed via I²C during commissioning and maintenance. Use Value: Page-write capability allows efficient bulk update of 16-point linearization tables without interrupting sensor operation. |
Use Scenario: Storing seat position presets, mirror angles, and lighting preferences in automotive door modules. IC Role / Device Role / Timing Role: Automotive-grade EEPROM interfacing directly with 3.3 V microcontrollers in CAN/LIN gateway subsystems. Use Value: Schmitt-trigger inputs and 4 kV ESD protection ensure robust operation in electrically noisy vehicle cabins. |
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 | No hardware WP pin; supports 1.7–5.5 V; 1 MHz I²C clock; 100 μA active current | Lacks dedicated write-protect pin; higher VCC min limits use in sub-1.8 V systems | Select when higher-speed I²C or wider voltage range is required and software-based protection suffices |
| BR24G02FJ-WE2 | 1.6–5.5 V operation; built-in write-protect register (not pin-based); 400 kHz I²C; 1.5 mA active current | Software-configurable protection instead of hardware WP; higher active current impacts battery life | Choose when flexible, register-based protection and AEC-Q200 qualification are prioritized over ultra-low power |
Compared with AT24C02C-SSHM-T and BR24G02FJ-WE2, the 24VL024/SN uniquely combines 1.5 V minimum operation, hardware WP pin, and sub-μA standby current - making it optimal for space-constrained, battery-critical designs where physical write lockout is mandatory.
Availability
24VL024/SN is available at Aetrix Electronics and suitable for smart metering, portable medical devices, industrial sensor nodes, and automotive body controllers requiring stable component supply across extended product lifecycles.
Supply support for 24VL024/SN 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/SN belongs to Microchip's low-voltage serial EEPROM product line, engineered specifically for energy-constrained applications demanding robust nonvolatile storage at supply voltages as low as 1.5 V.
FAQ
What is the minimum operating voltage for the 24VL024/SN?
The 24VL024/SN operates down to 1.5 V, enabling direct integration with primary lithium and coin-cell batteries without voltage regulation. This specification is validated across the full industrial temperature range (–20°C to +85°C) and is a defining feature distinguishing it from standard 2.5 V or 2.7 V EEPROMs. Below 1.8 V, I²C clock speed is limited to 100 kHz to maintain timing margins.
Does the 24VL024/SN support hardware write protection?
Yes, the 24VL024/SN includes a dedicated WP (Write-Protect) pin that, when tied to VCC, disables all write operations to the entire 256-byte memory array (addresses 00h–FFh). This hardware-level lock is active regardless of I²C commands and cannot be overridden in software - a key security and reliability feature absent in the pin-compatible 24VL025 variant.
How many devices can be connected on a single I²C bus using the 24VL024/SN?
Up to eight 24VL024/SN devices can be connected to one I²C bus using the three hardware address pins (A0, A1, A2), each configured as logic high or low to generate unique 3-bit chip select codes. This enables up to 16 Kbits of contiguous EEPROM space. Note that the SOT-23-packaged 24VL025 variant supports only four devices due to missing A2 connection.
What is the maximum write cycle time for the 24VL024/SN?
The 24VL024/SN specifies a maximum write cycle time of 5 ms for both byte and page writes, as measured from the Stop condition that initiates the internal programming sequence. During this period, the device does not acknowledge I²C commands - a condition detectable via acknowledge polling - ensuring predictable timing for host firmware integration.
Is the 24VL024/SN RoHS compliant and lead-free?
Yes, the 24VL024/SN is Pb-free and RoHS compliant, with matte tin (Sn) lead finish per JEDEC standards. The SOIC package (SN suffix) carries the "e3" marking per JEDEC J-STD-609, confirming compliance. Full RoHS documentation and test reports are available through Microchip's official product page and Aetrix Electronics' component traceability portal.
24VL024/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
24VL024/SN FAQ
1.How can I place an order for 24VL024/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24VL024/SN 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/SN reliable?
The price and inventory of 24VL024/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24VL024/SN is usually 5 days.
3.What payment methods are accepted for 24VL024/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24VL024/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24VL024/SN?
24VL024/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24VL024/SN 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/SN?
For technical support, including 24VL024/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24VL024/SN requirements.
6.How does Aetrix verify that 24VL024/SN is sourced from the original manufacturer or authorized distributors?
All 24VL024/SN 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/SN meets industry standards.
7.What is the process for return or replacement of 24VL024/SN?
All 24VL024/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24VL024/SN, 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/SN part is unused and in its original packaging.
Return procedure for 24VL024/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24VL024/SN 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
STMicroelectronics
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AT24CS02-SSHM-T
Microchip Technology
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93LC46BT-I/OT
Microchip Technology
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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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