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Microchip Technology 24LC02BH-E/MS
- Part No.:
- 24LC02BH-E/MS
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
24LC02BH-E/MS.pdf
- Description:
- IC EEPROM 2KBIT I2C 400KHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,178
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Product details
Overview
24LC02BH-E/MS from Microchip Technology Inc. is a 2 Kbit I²C-compatible serial EEPROM organized as 256 × 8-bit memory with hardware write-protect for the upper half-array (80h–FFh), 400 kHz max clock frequency at VCC ≥ 2.5 V, and operation across –40°C to +125°C (Extended temperature grade). It supports page writes up to 8 bytes, features Schmitt-trigger inputs and slope-controlled outputs, and is used in industrial sensor calibration storage and embedded system configuration retention.
For engineers reviewing the 24LC02BH-E/MS datasheet, 24LC02BH-E/MS pinout, 24LC02BH-E/MS application, or 24LC02BH-E/MS equivalent, key selection criteria include its 2.5–5.5 V supply range, half-array write-protection via WP pin, 5 ms max page write time, 1 µA standby current, and MSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The 24LC02BH-E/MS implements a two-wire I²C interface with fixed 7-bit client address (1010xxx) and R/W bit control, supporting byte and page write modes with automatic internal erase/write timing. Its memory array uses CMOS EEPROM technology with >1 million endurance cycles and >200 years data retention.
It integrates Schmitt-trigger inputs on SDA/SCL for noise immunity, output slope control to suppress ground bounce, and a dedicated WP pin that enables hardware-level protection of addresses 0x80–0xFF when pulled high-leaving 0x00–0x7F fully writable. No external address pins (A0–A2) are internally connected.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware revision IDs, sensor offsets, and small configuration tables |
| VCC Range | 2.5 V to 5.5 V - compatible with 3.3 V and 5 V logic systems without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5 V - enables faster configuration loading vs. legacy 100 kHz EEPROMs |
| Write Cycle Time | 5 ms maximum (byte or page) - defines minimum interval between successive write commands |
| Endurance | 1,000,000 erase/write cycles - supports frequent field updates in telemetry or logging applications |
| Data Retention | 200+ years at 25°C - ensures long-term reliability in unattended infrastructure devices |
| Standby Current | 1 µA maximum (I-temp) - critical for battery-powered nodes where quiescent power dominates lifetime |
Pinout & Package
24LC02BH-E/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 optionally connected to VSS. The package is RoHS-compliant and qualified per AEC-Q100 Grade 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | No-connect (NC) | Internally unconnected; may be left floating or tied to VSS/VCC without functional impact |
| A1 | No-connect (NC) | Internally unconnected; no effect on addressing or operation |
| A2 | No-connect (NC) | Internally unconnected; eliminates need for external address strapping resistors |
| VSS | Ground reference | Return path for all internal circuitry; must be low-impedance for stable I²C signaling |
| SDA | Serial Data I/O | Open-drain bidirectional bus line requiring external pull-up (2 kΩ typical for 400 kHz) |
| SCL | Serial Clock input | Master-generated clock synchronizing all read/write transfers; Schmitt-triggered for noise rejection |
| WP | Write-Protect control | Pulled high → protects 0x80–0xFF; pulled low → full array writable; no effect on reads |
| VCC | Power supply | Supplies core logic and EEPROM array; bypass capacitor (100 nF) recommended near pin |
Key Features
| Feature | Design Value |
|---|---|
| Half-array hardware write-protect | WP pin physically disables writes to upper 128 bytes (0x80–0xFF), enabling secure storage of factory-calibrated constants |
| 8-byte page write buffer | Reduces I²C transaction overhead by allowing up to 8 sequential bytes to be written per Stop condition |
| Schmitt-trigger inputs | SDA/SCL inputs reject noise spikes ≤50 ns and provide hysteresis (≥0.05×VCC) for robust operation in electrically noisy environments |
| Self-timed erase/write cycle | Eliminates need for external timing control; host uses ACK polling to detect completion without fixed delays |
| AEC-Q100 qualification | Validated for automotive applications including engine control modules and ADAS sensors requiring extended temperature operation |
Applications
| Industrial Sensor Calibration | Embedded System Configuration |
|---|---|
Use Scenario: Storing factory-trimmed offset/gain coefficients for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during power-up initialization via I²C master controller. Use Value: Enables plug-and-play sensor replacement without manual recalibration; WP pin secures factory values against accidental overwrite. | Use Scenario: Holding boot-time parameters (e.g., network MAC address, display brightness, language setting) in medical diagnostic equipment. IC Role / Device Role / Timing Role: I²C slave device providing persistent user preferences across cold resets and firmware updates. Use Value: Maintains operational continuity after power loss; 200-year retention ensures data integrity over product lifetime. |
| Automotive Telematics Module | Smart Meter Firmware Metadata |
Use Scenario: Recording vehicle-specific identifiers (VIN, calibration ID) and last-known GPS coordinates in telematics control units. IC Role / Device Role / Timing Role: AEC-Q100-qualified EEPROM interfacing with microcontroller over 400 kHz I²C bus for fast parameter access. Use Value: Extended temperature rating (–40°C to +125°C) supports under-hood deployment; 1 µA standby current minimizes battery drain. | Use Scenario: Storing firmware version, update timestamp, and cryptographic signature hash in utility smart meters. IC Role / Device Role / Timing Role: Secure nonvolatile memory holding immutable metadata used during secure boot verification. Use Value: Hardware write-protect prevents tampering with critical firmware identity fields while permitting field-upgradable configuration sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT24C02D-SSHM-T | Same 2 Kbit capacity, 1.7–5.5 V VCC, but supports 1 MHz I²C; no extended temp grade (only –40°C to +85°C) | Lacks AEC-Q100 qualification and 125°C operation; unsuitable for under-hood automotive use | Select if higher-speed I²C (1 MHz) and broader voltage range are needed, and extended temperature is not required. |
| BR24G02FJ-3GE2 | 2 Kbit, 1.6–5.5 V, supports 1 MHz I²C; offers built-in write-protection register (not pin-based); TDFN-8 package only | Software-configurable protection vs. hardware WP pin; different footprint requires PCB redesign | Choose when flexible protection granularity (per-page or block-level) is preferred over fixed half-array hardware lock. |
Compared with AT24C02D-SSHM-T and BR24G02FJ-3GE2, the 24LC02BH-E/MS provides guaranteed 125°C operation and AEC-Q100 compliance out-of-the-box, making it the only option qualified for automotive extended-temperature environments without derating or additional validation.
Availability
24LC02BH-E/MS is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive telematics, and smart metering applications requiring stable component supply, long-term lifecycle support, and extended temperature performance.
Supply support for 24LC02BH-E/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 24LC02BH belongs to Microchip's 24XX02H family of I²C EEPROMs, designed specifically for reliable, low-power nonvolatile data storage in space- and power-constrained embedded systems across industrial, automotive, and consumer markets.
FAQ
What is the operating voltage range for the 24LC02BH-E/MS?
The 24LC02BH-E/MS operates from 2.5 V to 5.5 V. Below 2.5 V, the device is not guaranteed to function - unlike the 24AA02H variant which supports down to 1.7 V. This makes the 24LC02BH-E/MS ideal for 3.3 V and 5 V systems but incompatible with sub-2.5 V ultra-low-power designs. Always verify VCC stability within this window during power-up and brownout conditions.
Does the 24LC02BH-E/MS require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC02BH-E/MS requires external pull-up resistors on both SDA and SCL because these pins are open-drain. For 400 kHz operation, a 2 kΩ resistor to VCC is recommended; for 100 kHz, 10 kΩ is typical. Incorrect pull-up values cause signal rise-time violations and I²C communication failures. The 24LC02BH-E/MS itself does not integrate internal pull-ups.
How does the WP pin protect memory in the 24LC02BH-E/MS?
When the WP pin of the 24LC02BH-E/MS is tied to VCC, write operations to memory addresses 0x80–0xFF are inhibited; reads remain fully functional. Addresses 0x00–0x7F stay writable. If WP is tied to VSS, the entire array is writable. This hardware-level protection is active immediately and requires no software configuration - a key reliability feature for safeguarding factory-programmed data.
Can the 24LC02BH-E/MS be used in automotive applications?
Yes, the 24LC02BH-E/MS is AEC-Q100 qualified and rated for Extended temperature range (–40°C to +125°C), making it suitable for automotive applications such as body control modules, infotainment systems, and telematics units. Its qualification covers stress testing for temperature cycling, humidity, and vibration - ensuring reliability in harsh vehicular environments where the 24LC02BH-E/MS is deployed.
What is the maximum write speed and page size of the 24LC02BH-E/MS?
The 24LC02BH-E/MS supports a maximum I²C clock frequency of 400 kHz and has an 8-byte page write buffer. Each page write completes in ≤5 ms. Attempting to write more than 8 bytes before issuing a Stop condition causes wraparound within the same page - not sequential page advancement. Therefore, firmware must enforce page boundaries (0x00–0x07, 0x08–0x0F, etc.) to avoid unintended overwrites in the 24LC02BH-E/MS.
24LC02BH-E/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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:
- 2.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
24LC02BH-E/MS FAQ
1.How can I place an order for 24LC02BH-E/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02BH-E/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 24LC02BH-E/MS reliable?
The price and inventory of 24LC02BH-E/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02BH-E/MS is usually 5 days.
3.What payment methods are accepted for 24LC02BH-E/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02BH-E/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02BH-E/MS?
24LC02BH-E/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02BH-E/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 24LC02BH-E/MS?
For technical support, including 24LC02BH-E/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02BH-E/MS requirements.
6.How does Aetrix verify that 24LC02BH-E/MS is sourced from the original manufacturer or authorized distributors?
All 24LC02BH-E/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 24LC02BH-E/MS meets industry standards.
7.What is the process for return or replacement of 24LC02BH-E/MS?
All 24LC02BH-E/MS units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02BH-E/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 24LC02BH-E/MS part is unused and in its original packaging.
Return procedure for 24LC02BH-E/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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