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Microchip Technology 24LC02BT-I/MS
- Part No.:
- 24LC02BT-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC02BT-I/MS.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,256
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Product details
Overview
24LC02BT-I/MS from Microchip Technology Inc. is a 2-Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protection, 8-byte page write buffer, and operation from 2.5V to 5.5V. It supports 400 kHz clock frequency, delivers ≤1 mA read current and ≤1 µA standby current (I-temp), and is qualified for industrial temperature range (–40°C to +85°C). It is commonly used in embedded system configuration storage, sensor calibration data retention, and firmware parameter backup.
For engineers reviewing the 24LC02BT-I/MS datasheet, 24LC02BT-I/MS pinout, 24LC02BT-I/MS application, or 24LC02BT-I/MS equivalent, key selection considerations include its 2.5V minimum VCC, 400 kHz I²C speed at full voltage, MSOP-8 package footprint, hardware WP pin control, and 1 million endurance cycles with >200-year data retention - all critical for low-power, space-constrained, and long-life industrial designs.
Technical Context
The 24LC02BT-I/MS implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal address pointer enables current-address, random, and sequential read modes, while ACK polling allows host-driven timing synchronization during self-timed write cycles.
It uses an on-chip HV generator for EEPROM programming and features a dedicated 8-byte page latch for efficient multi-byte writes. The device ignores A0–A2 pins (no internal connection), simplifying address decoding in single-device systems, and relies solely on the fixed 4-bit client address '1010' with R/W bit for communication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for storing device IDs, calibration coefficients, or boot configuration flags |
| VCC Range | 2.5V to 5.5V - requires ≥2.5V supply; not operable below 2.5V unlike 24AA02/24FC02 variants |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V - defines maximum I²C bus throughput for configuration updates |
| Page Write Buffer | 8 bytes - enables burst writes within one physical page (00–07, 08–0F, etc.), reducing transaction overhead |
| Write Cycle Time | 5 ms max - sets worst-case latency for non-volatile write completion; ACK polling required to detect readiness |
| Endurance & Retention | 1,000,000 erase/write cycles and >200 years data retention - ensures reliability across product lifetime in unattended deployments |
| Temperature Range | Industrial: –40°C to +85°C - validated for use in factory automation, metering, and outdoor electronics enclosures |
Pinout & Package
24LC02BT-I/MS is supplied in an 8-lead MSOP (Micro Small Outline Package) with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed pad option (not electrically connected). Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC without effect on operation |
| A1 | Address Input | No internal connection; no impact on device addressing or functionality |
| A2 | Address Input | No internal connection; unused per datasheet Table 2-1 and Section 2.1 |
| VSS | Ground Reference | Primary return path for all internal circuits; must be low-impedance connection to system GND |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz) |
| SCL | Serial Clock Input | Input-only clock line synchronized to host controller; drives internal timing for read/write operations |
| WP | Write-Protect Control | Logic-high (VCC) disables all writes; logic-low (VSS) enables full read/write access to 00–FF address space |
| VCC | Power Supply | Single 2.5–5.5V supply; powers EEPROM array, interface logic, and HV generator |
Key Features
| Feature | Design Value |
|---|---|
| Hardware Write-Protection | Physical WP pin enables irreversible lock of entire memory array - prevents accidental firmware corruption during power transitions or software faults |
| Schmitt Trigger Inputs | 0.05 VCC hysteresis on SDA/SCL eliminates false triggering from EMI or slow-rising signals in noisy industrial environments |
| Self-Timed Erase/Write Cycle | Internal timing eliminates need for host to manage write duration; ACK polling provides deterministic completion detection |
| 8-Byte Page Write Buffer | Reduces I²C transaction count by up to 8× vs. byte-write mode - improves bus efficiency and reduces host CPU load |
| ESD Protection >4 kV | Robust HBM rating allows safe handling and board-level integration without additional protection circuitry |
Applications
| Industrial Sensor Calibration Storage | Embedded System Configuration Memory |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain values for analog sensors (e.g., pressure, temperature) in programmable logic controllers. IC Role / Device Role / Timing Role: Non-volatile configuration register accessed at power-on reset via I²C to initialize ADC reference points and linearization coefficients. Use Value: Enables field-replaceable sensor modules with unique calibration data preserved across power cycles and firmware updates. | Use Scenario: Holding user-defined settings (network IP, display brightness, alarm thresholds) in HVAC controllers and smart thermostats. IC Role / Device Role / Timing Role: Persistent parameter store updated infrequently via microcontroller I²C interface during menu navigation or remote configuration. Use Value: Guarantees settings survive brownouts and extended power loss without requiring battery-backed SRAM. |
| Firmware Bootloader Parameter Backup | Medical Device Usage Log Storage |
Use Scenario: Recording bootloader version, secure boot status, and last known good firmware hash in diagnostic medical equipment. IC Role / Device Role / Timing Role: Trusted configuration vault accessed only by bootloader during cold start to validate firmware integrity before execution. Use Value: Supports regulatory compliance (IEC 62304) by providing tamper-resistant audit trail of firmware state changes. | Use Scenario: Logging usage hours, error codes, and calibration verification timestamps in portable ultrasound or infusion pumps. IC Role / Device Role / Timing Role: Low-power event logger writing timestamped entries after each clinical session or fault condition. Use Value: Meets FDA design history file requirements with >200-year data retention and 1M-cycle endurance for lifetime device tracking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02T-I/MS | Lower VCC min (1.7V), same 400 kHz speed, identical MSOP-8 package and pinout | Better suited for battery-powered devices operating down to 1.8V; not rated for 2.5V-only systems | Select when supply voltage may dip below 2.5V; verify WP behavior and timing specs match under actual VCC conditions |
| AT24C02D-MAHM-T | Same 2-Kbit size, 1.7–5.5V VCC, 1 MHz max clock, SOIC-8 package (not MSOP-8) | Requires PCB layout change due to different footprint; higher speed useful only if host supports 1 MHz I²C | Choose only if SOIC-8 is preferred and 1 MHz bandwidth is needed; otherwise, 24LC02BT-I/MS offers direct MSOP-8 drop-in compatibility |
Compared with 24AA02T-I/MS, the 24LC02BT-I/MS trades wider voltage range for guaranteed 2.5V+ operation and tighter industrial temp validation; compared with AT24C02D-MAHM-T, it offers identical function in a smaller MSOP-8 footprint but at lower max clock rate - making it optimal for space-constrained, 2.5–5.5V industrial control nodes.
Availability
24LC02BT-I/MS is available at Aetrix Electronics and suitable for industrial sensor calibration storage, embedded system configuration memory, and firmware bootloader parameter backup requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for 24LC02BT-I/MS 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 24LC02B family is designed specifically for reliable, low-power, I²C-based non-volatile data storage in cost-sensitive industrial, automotive, and consumer applications where small footprint and proven endurance are essential.
FAQ
What is the minimum supply voltage required for reliable operation of the 24LC02BT-I/MS?
The 24LC02BT-I/MS requires a minimum VCC of 2.5V for guaranteed operation across its full industrial temperature range (–40°C to +85°C). Unlike the 24AA02 or 24FC02 variants, it is not specified for operation below 2.5V - attempting to power it at 1.8V will result in undefined behavior or failure to respond on the I²C bus. Always maintain VCC ≥2.5V in designs using the 24LC02BT-I/MS.
Does the 24LC02BT-I/MS support 1 MHz I²C communication?
No, the 24LC02BT-I/MS supports a maximum clock frequency of 400 kHz when VCC is 2.5V or higher. It does not support 1 MHz operation - that capability is exclusive to the 24FC02 variant. Attempting to run the 24LC02BT-I/MS at 1 MHz will cause communication failures, missing ACKs, or corrupted data transfers due to timing violations in setup/hold and rise/fall specifications.
How is write protection implemented on the 24LC02BT-I/MS?
Write protection on the 24LC02BT-I/MS is controlled exclusively by the WP pin: tying WP to VCC disables all write operations (byte and page) to the entire 256-byte memory array (addresses 00–FF), while tying WP to VSS enables full read/write access. No software command or internal register configures this - it is a hardwired, hardware-level feature that remains active regardless of I²C activity or power cycling.
Can the A0, A1, and A2 pins of the 24LC02BT-I/MS be used to select different I²C addresses?
No - the A0, A1, and A2 pins of the 24LC02BT-I/MS have no internal connection and are functionally unused. The device responds only to the fixed I²C client address '1010xxxR/W' where the three 'x' bits are don't-care; therefore, only one 24LC02BT-I/MS can reside on a given I²C bus segment unless external multiplexing is added. This differs from larger EEPROMs like the 24LC256 which use A0–A2 for address selection.
What is the maximum time required to complete a write cycle on the 24LC02BT-I/MS?
The maximum write cycle time for the 24LC02BT-I/MS is 5 ms for both byte and page writes, as specified in Table 1-2, Parameter TWC. During this interval, the device does not acknowledge I²C start conditions or control bytes. Host firmware must use ACK polling - repeatedly sending a start + write control byte until an ACK is received - to determine when the internal write operation has completed and the device is ready for the next transaction.
24LC02BT-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-MSOP
24LC02BT-I/MS FAQ
1.How can I place an order for 24LC02BT-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02BT-I/MS 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 24LC02BT-I/MS reliable?
The price and inventory of 24LC02BT-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02BT-I/MS is usually 5 days.
3.What payment methods are accepted for 24LC02BT-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BT-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02BT-I/MS?
24LC02BT-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02BT-I/MS 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 24LC02BT-I/MS?
For technical support, including 24LC02BT-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BT-I/MS requirements.
6.How does Aetrix verify that 24LC02BT-I/MS is sourced from the original manufacturer or authorized distributors?
All 24LC02BT-I/MS 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 24LC02BT-I/MS meets industry standards.
7.What is the process for return or replacement of 24LC02BT-I/MS?
All 24LC02BT-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BT-I/MS, 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 24LC02BT-I/MS part is unused and in its original packaging.
Return procedure for 24LC02BT-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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