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Microchip Technology 24LC02BHT-E/SN
- Part No.:
- 24LC02BHT-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
24LC02BHT-E/SN.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,347
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Product details
Overview
24LC02BHT-E/SN from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with half-array hardware write-protection (80h–FFh), 8-byte page buffer, and operation down to 2.5V. It supports 100 kHz/400 kHz clock rates, delivers ≤1 mA read current and ≤1 µA standby current, and targets embedded system configuration storage in industrial and extended-temperature applications.
For engineers reviewing the 24LC02BHT-E/SN datasheet, 24LC02BHT-E/SN pinout, 24LC02BHT-E/SN application, or 24LC02BHT-E/SN equivalent, key selection considerations include VCC range (2.5–5.5V), E-temp rating (−40°C to +125°C), SOIC-8 narrow (SN) package compatibility, half-array WP functionality, and I²C timing compliance at both 100 kHz and 400 kHz.
Technical Context
The 24LC02BHT-E/SN 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 the 8-byte page buffer supports efficient multi-byte writes within physical page boundaries (0–7, 8–15, etc.).
Write protection is controlled solely by the WP pin: tied to VSS for full array access, tied to VCC to lock addresses 0x80–0xFF. Pins A0–A2 are unconnected and may be left floating or tied to VSS/VCC without affecting operation - no device addressing via these pins is supported.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware ID, calibration data, or small configuration tables |
| VCC Range | 2.5V to 5.5V - compatible with 3.3V and 5V logic systems; no operation below 2.5V |
| Max Clock Frequency | 400 kHz at VCC ≥2.5V - enables faster programming vs. legacy 100 kHz EEPROMs |
| Page Write Time | ≤5 ms - self-timed; host can poll ACK to detect completion without fixed delay |
| Endurance | 1,000,000 erase/write cycles - supports frequent field updates in telemetry or logging |
| Data Retention | >200 years at 25°C - ensures long-term reliability in unpowered storage |
| Temperature Range | −40°C to +125°C (Extended grade) - qualified for under-hood automotive and industrial control |
Pinout & Package
24LC02BHT-E/SN is supplied in an 8-lead plastic small outline (SOIC) narrow body package (SN), 3.90 mm wide, with standard 1.27 mm pitch and gull-wing leads. Footprint matches JEDEC MS-012AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect | Internally unconnected; may float or tie to VSS/VCC - no effect on addressing or function |
| A1 | No-connect | Internally unconnected; no impact on I²C slave address or memory access |
| A2 | No-connect | Internally unconnected; not used for device selection or configuration |
| VSS | Ground reference | Primary return path for all internal circuitry and I/O leakage currents |
| SDA | Serial data I/O | Open-drain bidirectional bus line requiring external pull-up; carries address, data, and ACK/NACK |
| SCL | Serial clock input | Master-generated clock synchronizing all data transfers; Schmitt-triggered for noise immunity |
| WP | Hardware write-protect | Logic-high (VCC) disables writes to upper half (0x80–0xFF); logic-low (VSS) enables full array access |
| VCC | Power supply | Supplies core EEPROM array, interface logic, and internal voltage regulators; must be stable during write cycles |
Key Features
| Feature | Design Value |
|---|---|
| Half-array hardware write-protection | Prevents accidental overwrites of critical data (e.g., MAC address, calibration constants) stored in upper 128 bytes |
| 8-byte page write buffer | Reduces I²C transaction overhead by enabling up to 8 bytes per Stop-initiated write cycle |
| Schmitt-trigger SDA/SCL inputs | Rejects fast transients <50 ns and improves noise margin in electrically noisy environments |
| Self-timed write cycle with ACK polling | Eliminates need for fixed delays; host detects completion via repeated write-address ACK attempts |
| ESD protection >4 kV | Meets IEC 61000-4-2 Level 4 for robust handling during board assembly and field service |
Applications
| Industrial Sensor Calibration | Automotive ECU Configuration |
|---|---|
Use Scenario: Storing factory-calibrated sensor offset/gain coefficients and temperature compensation tables in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up or periodic self-test; I²C interface allows sharing with MCU's existing bus. Use Value: Enables field-replaceable sensors without recalibration; −40°C to +125°C rating ensures data integrity across full operating range. | Use Scenario: Holding vehicle-specific parameters (e.g., VIN-derived settings, trim codes, adaptive learning values) in engine control units or body controllers. IC Role / Device Role / Timing Role: Secure, low-power NVM for infrequently updated but mission-critical configuration data; WP pin protects factory-programmed segments. Use Value: AEC-Q100 qualification and 125°C operation guarantee reliability in under-hood environments; 1M-cycle endurance supports dealer reprogramming. |
| Medical Device Settings | IoT Edge Node Identity |
Use Scenario: Retaining user preferences, alarm thresholds, and usage logs in portable diagnostic equipment with battery backup. IC Role / Device Role / Timing Role: Low-voltage (2.5V min) EEPROM interfaced to 3.3V microcontroller; standby current ≤1 µA extends battery life. Use Value: Ensures data persistence during brown-out conditions; >200-year retention meets medical device regulatory archival requirements. | Use Scenario: Storing unique device identifiers (e.g., IEEE EUI-48 MAC address), cryptographic keys, and firmware version stamps in smart meters or asset trackers. IC Role / Device Role / Timing Role: Tamper-resistant identity storage; hardware WP prevents overwrite of immutable identity fields. Use Value: Factory-programmable option enables secure provisioning; 4 kV ESD rating protects against handling damage during module assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24LC02BT-I/SN | Industrial temp range only (−40°C to +85°C); same pinout, timing, and features | Not rated for extended-temperature environments like under-hood automotive or high-ambient industrial enclosures | Select when cost sensitivity outweighs need for +125°C operation and E-grade qualification |
| AT24C02D-SSHM-T | Same 2 Kbit size and I²C interface; supports 1.7–5.5V VCC; no hardware WP pin - uses software write-protect | Lacks dedicated hardware WP; requires firmware coordination to prevent unintended writes to protected regions | Choose when broader voltage range (1.7V) is required and software-managed protection suffices |
Compared with 24LC02BHT-E/SN, the 24LC02BT-I/SN sacrifices extended temperature capability for lower cost, while the AT24C02D-SSHM-T trades hardware write-protection for wider VCC flexibility - making the 24LC02BHT-E/SN optimal where guaranteed +125°C operation and hardware-enforced data integrity are mandatory.
Availability
24LC02BHT-E/SN is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive ECU configuration, medical device settings, and IoT edge node identity applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 24LC02BHT-E/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 devices, and memory solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The 24LC02BHT-E/SN belongs to Microchip's 24XX02H family of I²C EEPROMs, designed specifically for robust, low-power nonvolatile storage in space-constrained embedded systems where data integrity, extended temperature operation, and hardware-level write protection are essential.
FAQ
What is the operating voltage range for the 24LC02BHT-E/SN?
The 24LC02BHT-E/SN operates from 2.5V to 5.5V. It does not support voltages below 2.5V - unlike the 24AA02H variant which works down to 1.7V. This makes the 24LC02BHT-E/SN suitable for 3.3V and 5V systems but incompatible with sub-2.5V battery-powered designs. The specified VCC range is validated across its full −40°C to +125°C extended temperature grade.
Does the 24LC02BHT-E/SN support I²C clock speeds above 100 kHz?
Yes, the 24LC02BHT-E/SN supports up to 400 kHz I²C clock frequency when VCC is 2.5V or higher. At this speed, minimum THIGH and TLOW times are 600 ns and 1300 ns respectively. The device remains fully compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C specifications, enabling faster configuration loading in time-sensitive applications.
How does hardware write-protection work on the 24LC02BHT-E/SN?
Hardware write-protection on the 24LC02BHT-E/SN is controlled exclusively by the WP pin. When WP is tied to VCC, writes to memory addresses 0x80–0xFF are inhibited while reads remain enabled. When WP is tied to VSS, full array read/write access is permitted. This protection is implemented at the silicon level and cannot be overridden by software commands.
Are pins A0, A1, and A2 functional on the 24LC02BHT-E/SN?
No - pins A0, A1, and A2 are not internally connected on the 24LC02BHT-E/SN. They serve no addressing or configuration purpose and may be left floating or tied to VSS or VCC without affecting device behavior. The 24LC02BHT-E/SN uses a fixed I²C slave address (1010xxx, where xxx are "don't care") and does not support multi-device bus addressing via these pins.
What package type is used for the 24LC02BHT-E/SN?
The 24LC02BHT-E/SN uses an 8-lead plastic small outline (SOIC) narrow-body package designated SN, measuring 3.90 mm wide with 1.27 mm lead pitch. This JEDEC-standard package (MS-012AA) is compatible with automated pick-and-place and reflow soldering, and its land pattern is documented in Microchip drawing C04-057-SN Rev F.
24LC02BHT-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
24LC02BHT-E/SN FAQ
1.How can I place an order for 24LC02BHT-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02BHT-E/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 24LC02BHT-E/SN reliable?
The price and inventory of 24LC02BHT-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02BHT-E/SN is usually 5 days.
3.What payment methods are accepted for 24LC02BHT-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BHT-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02BHT-E/SN?
24LC02BHT-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02BHT-E/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 24LC02BHT-E/SN?
For technical support, including 24LC02BHT-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BHT-E/SN requirements.
6.How does Aetrix verify that 24LC02BHT-E/SN is sourced from the original manufacturer or authorized distributors?
All 24LC02BHT-E/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 24LC02BHT-E/SN meets industry standards.
7.What is the process for return or replacement of 24LC02BHT-E/SN?
All 24LC02BHT-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BHT-E/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 24LC02BHT-E/SN part is unused and in its original packaging.
Return procedure for 24LC02BHT-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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