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Microchip Technology 24LC024-I/ST
- Part No.:
- 24LC024-I/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC024-I/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:446
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Product details
Overview
24LC024-I/ST from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory, operating from 2.5V to 5.5V with hardware write-protection via the WP pin, 400 kHz max clock, and industrial temperature range (–40°C to +85°C). It supports page writes up to 16 bytes and delivers typical standby current of 1 μA for low-power embedded systems.
For engineers reviewing the 24LC024-I/ST datasheet, 24LC024-I/ST pinout, 24LC024-I/ST application, or 24LC024-I/ST equivalent, key selection considerations include its 8-lead SOIC package, I²C bus compatibility up to eight devices, hardware write-protect functionality, and guaranteed 1 million erase/write cycles with >200-year data retention.
Technical Context
The 24LC024-I/ST implements a 2-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables sequential, random, and current-address read modes, while the 16-byte page buffer supports efficient burst writes without host intervention between bytes.
Hardware write protection is enforced via the dedicated WP pin tied to VCC (enabled) or VSS (disabled); this function is exclusive to 24XX024 variants and absent in 24XX025 parts. The device uses an internal high-voltage generator and EEPROM array control logic to execute self-timed erase/write cycles with no external timing components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 2 Kbit (256 × 8-bit), enabling compact nonvolatile storage for calibration data, configuration registers, or device IDs. |
| Supply voltage | 2.5V to 5.5V - compatible with standard 3.3V and 5V logic domains without level-shifting. |
| Interface | I²C-compatible 2-wire serial bus - simplifies PCB routing and reduces pin count vs. SPI or parallel interfaces. |
| Max clock frequency | 400 kHz at VCC ≥ 1.8V - supports fast firmware updates or real-time parameter logging in time-constrained applications. |
| Write endurance | 1 million erase/write cycles - ensures long-term reliability in field-updatable systems with frequent configuration changes. |
| Data retention | >200 years at +25°C - guarantees persistent storage integrity across product lifecycles without refresh. |
| Page write buffer | 16-byte - allows efficient multi-byte writes with single Stop condition, reducing bus overhead and improving throughput. |
| Temperature range | Industrial: –40°C to +85°C - validated for operation in automotive ECUs, industrial controllers, and outdoor IoT nodes. |
Pinout & Package
24LC024-I/ST is packaged in an 8-lead SOIC (3.90 mm) with gull-wing leads, RoHS-compliant matte tin finish, and standard JEDEC MS-012AC footprint. Pin 1 is marked by laser dot; body dimensions are 4.90 mm × 3.90 mm × 1.75 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Chip select input | LSB of 3-bit slave address; sets device address when multiple EEPROMs share same I²C bus (0x50–0x57). |
| A1 | Chip select input | Middle bit of slave address; enables cascading up to eight 24LC024-I/ST units on one bus. |
| A2 | Chip select input | MSB of slave address; must be hardwired to VSS or VCC - not NC in SOIC package. |
| VSS | Ground reference | Return path for all internal circuitry; requires low-impedance connection to system GND plane. |
| SDA | Serial data I/O | Open-drain bidirectional line; requires external pull-up resistor (2 kΩ for 400 kHz, 10 kΩ for 100 kHz). |
| SCL | Serial clock input | Master-generated clock synchronizing all data transfers; Schmitt-trigger input rejects noise spikes. |
| WP | Hardware write-protect | Active-high enable: tie to VCC to lock entire memory array against accidental writes; tied to VSS for full write access. |
| VCC | Power supply | 2.5V–5.5V input; internal voltage detector disables write logic if VCC drops below 1.5V to prevent corruption. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Eliminates false triggering from bus noise by providing hysteresis (0.05×VCC), critical in electrically noisy environments like motor drives or power supplies. |
| Output slope control | Slows SDA/SCL edge rates to suppress ground bounce and EMI, enabling reliable operation without external RC filtering. |
| Self-timed write cycle | Removes need for external timing components or software delays - host initiates write and polls ACK to detect completion. |
| 16-byte page buffer | Reduces I²C transaction count during multi-byte writes: one Start + address + 16 data bytes + Stop replaces 16 separate byte writes. |
| ESD protection | >4 kV HBM - protects against handling damage during assembly and field service, reducing early-life failures. |
| Pb-free & RoHS | Complies with global environmental regulations; matte tin plating ensures solderability and wire-bond compatibility. |
Applications
| Smart Metering | Industrial PLC |
|---|---|
|
Use Scenario: Storing tariff tables, meter calibration coefficients, and tamper-event logs in electricity/water/gas meters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage with write-protection enabled to prevent unauthorized parameter modification. Use Value: Hardware WP pin blocks firmware-level attacks on billing parameters; 1M endurance supports daily log writes over 10+ years. |
Use Scenario: Retaining I/O mapping, PID tuning constants, and alarm thresholds across power cycles in programmable logic controllers. IC Role / Device Role / Timing Role: Persistent parameter storage accessible via I²C from MCU during boot or runtime reconfiguration. Use Value: 2.5V–5.5V operation matches PLC backplane rails; 85°C rating ensures reliability inside enclosed cabinets. |
| Automotive Body Control | Medical Diagnostic Device |
|
Use Scenario: Saving seat/mirror position presets, lighting profiles, and door lock configurations in vehicle body control modules. IC Role / Device Role / Timing Role: EEPROM storing user-customizable settings with hardware write-protect to prevent corruption during CAN bus transients. Use Value: Industrial temp grade meets AEC-Q100 Class 2 requirements; 400 kHz I²C enables fast recall of 16-position profiles. |
Use Scenario: Archiving sensor calibration offsets, usage counters, and regulatory audit trails in portable diagnostic instruments. IC Role / Device Role / Timing Role: Tamper-resistant nonvolatile memory for FDA-required device history and calibration traceability. Use Value: >200-year data retention satisfies medical device lifecycle documentation mandates; WP pin enforces write-lock during field servicing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA024-I/ST | Wider VCC range (1.7V–5.5V); no WP pin on SOT-23 variant; identical SOIC pinout and I²C protocol. | Supports battery-powered devices down to 1.7V; lacks hardware write-protect in SOT-23, requiring software-based protection. | Select when ultra-low-voltage operation is required and hardware WP is not mandatory. |
| AT24C02-PU | Same 2 Kbit capacity and SOIC-8 package; 1.8V–5.5V range; no dedicated WP pin - write protection implemented via software address locking. | Lacks hardware-level write security; relies on firmware to restrict writes to protected pages, increasing attack surface. | Choose for cost-sensitive designs where software-controlled protection suffices and 1.7V operation is unnecessary. |
Compared with 24LC024-I/ST, 24AA024-I/ST offers broader supply flexibility but sacrifices hardware write-protect in smaller packages, while AT24C02-PU eliminates the WP pin entirely - making 24LC024-I/ST the only option guaranteeing physical, pin-level memory lockdown in industrial and automotive contexts.
Availability
24LC024-I/ST is available at Aetrix Electronics and suitable for smart metering, industrial PLCs, automotive body control modules, and medical diagnostic devices requiring stable component supply, long-term data integrity, and hardware-enforced write protection.
Supply support for 24LC024-I/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, FPGA, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC024-I/ST belongs to Microchip's serial EEPROM product line, engineered for robust, low-power nonvolatile storage in industrial, automotive, and consumer applications where data persistence and bus simplicity are critical.
FAQ
What is the maximum I²C clock frequency supported by the 24LC024-I/ST?
The 24LC024-I/ST supports up to 400 kHz I²C clock frequency when VCC is ≥1.8V. At VCC < 2.5V, the maximum clock drops to 100 kHz per Microchip DS21210N specification. This dual-speed capability ensures interoperability with both legacy 100 kHz systems and modern high-throughput designs using the 24LC024-I/ST.
Does the 24LC024-I/ST have hardware write protection, and how is it implemented?
Yes, the 24LC024-I/ST includes a dedicated WP (Write-Protect) pin that enables hardware-level memory lockdown. When WP is tied to VCC, the entire 2 Kbit array is write-protected; tying WP to VSS enables full write access. This feature is confirmed in the Device Selection Table and Pin Descriptions section of the 24LC024-I/ST datasheet.
What package type is used for the 24LC024-I/ST part number?
The 24LC024-I/ST uses an 8-lead SOIC package with 3.90 mm body width (JEDEC MS-012AC), as specified in the Packaging Information section of DS21210N. The "-I/ST" suffix explicitly denotes Industrial temperature grade in SOIC packaging, distinct from PDIP (-P), TSSOP (-T), or DFN (-M) variants.
How many 24LC024-I/ST devices can be connected on the same I²C bus?
Up to eight 24LC024-I/ST devices can be cascaded on a single I²C bus using unique combinations of the A0, A1, and A2 address pins. Each device responds only to its assigned 3-bit chip select code (000–111), enabling up to 16 Kbits of contiguous EEPROM space - a capability verified in the Device Addressing section of the 24LC024-I/ST datasheet.
What is the write endurance and data retention specification for the 24LC024-I/ST?
The 24LC024-I/ST guarantees a minimum of 1 million erase/write cycles and data retention exceeding 200 years at +25°C, as stated in the Features list and Electrical Characteristics table of DS21210N. These values are characterized and ensured by Microchip's process and reliability testing - not estimated or extrapolated.
24LC024-I/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:
- 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC024-I/ST FAQ
1.How can I place an order for 24LC024-I/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC024-I/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 24LC024-I/ST reliable?
The price and inventory of 24LC024-I/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC024-I/ST is usually 5 days.
3.What payment methods are accepted for 24LC024-I/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC024-I/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC024-I/ST?
24LC024-I/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC024-I/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 24LC024-I/ST?
For technical support, including 24LC024-I/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC024-I/ST requirements.
6.How does Aetrix verify that 24LC024-I/ST is sourced from the original manufacturer or authorized distributors?
All 24LC024-I/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 24LC024-I/ST meets industry standards.
7.What is the process for return or replacement of 24LC024-I/ST?
All 24LC024-I/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC024-I/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 24LC024-I/ST part is unused and in its original packaging.
Return procedure for 24LC024-I/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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