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Microchip Technology 24LC02B-E/ST
- Part No.:
- 24LC02B-E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
24LC02B-E/ST.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,288
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Product details
Overview
24LC02B-E/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 400 kHz max clock frequency, 5 ms max page write time, and hardware write-protection via WP pin. It supports industrial (–40°C to +85°C) and extended (–40°C to +125°C) temperature ranges in an 8-lead SOIC package, used for storing calibration data, configuration settings, and device identifiers in embedded control systems.
For engineers reviewing the 24LC02B-E/ST datasheet, 24LC02B-E/ST pinout, 24LC02B-E/ST application, or 24LC02B-E/ST equivalent, this page delivers verified electrical specs, validated I²C timing compliance (including THD:STA, TSU:DAT, TAA), confirmed package mapping to SOIC-8, and two field-validated alternative parts with documented functional and application-level differences.
Technical Context
The 24LC02B-E/ST implements a two-wire I²C interface with Schmitt-trigger inputs and slope-controlled outputs to suppress noise and eliminate ground bounce. Its internal architecture includes an 8-byte page write buffer, self-timed erase/write cycle, and address pointer logic enabling current-address, random, and sequential read modes.
It uses open-drain SDA/SCL signaling requiring external pull-ups, supports ACK polling for write-cycle completion detection, and enforces strict bus protocol adherence-including Start/Stop condition generation, data validity windows during SCL high, and no data changes on SCL high-ensuring interoperability with standard I²C masters across automotive, industrial, and consumer platforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2 Kbit (256 × 8-bit), sufficient for firmware revision stamps, sensor calibration coefficients, or MAC address storage |
| VCC Range | 2.5V–5.5V - compatible with 3.3V and 5V logic domains without level shifting |
| Max Clock Frequency | 400 kHz at VCC ≥ 2.5V - enables fast configuration loading in real-time systems |
| Page Write Time | 5 ms maximum - defines minimum interval between successive page writes in firmware |
| Endurance | 1,000,000 erase/write cycles - supports frequent logging or parameter updates over product lifetime |
| Data Retention | 200 years at +25°C - ensures long-term reliability of stored configuration data |
| Write Protection | Hardware-enabled via WP pin tied to VCC - prevents accidental overwrites during power-up or firmware faults |
Pinout & Package
24LC02B-E/ST is supplied in an 8-lead SOIC (Small Outline Integrated Circuit) package with 1.27 mm pitch, JEDEC MS-012AC compliant, suitable for automated PCB assembly and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address Input | No internal connection; may be left floating or tied to VSS/VCC - does not affect device addressing |
| A1 | Address Input | No internal connection; unused for 24LC02B - eliminates need for external address resistors |
| A2 | Address Input | No internal connection; reserved for higher-density variants only - simplifies board layout |
| VSS | Ground Reference | System return path for all internal circuitry; must be low-impedance to ensure stable I²C signaling |
| SDA | Serial Data I/O | Open-drain bidirectional bus line; requires external pull-up (2 kΩ typical for 400 kHz operation) |
| SCL | Serial Clock Input | Master-generated clock synchronizing all read/write transfers; Schmitt-trigger input rejects noise |
| WP | Write-Protect Control | Active-high enable: tie to VCC to lock entire memory array against writes while permitting reads |
| VCC | Power Supply | Primary supply rail (2.5V–5.5V); decoupling capacitor (100 nF) required near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Two-Wire Serial Interface | Fully compliant with I²C bus specification - interoperable with microcontrollers, SoCs, and PMICs using standard I²C drivers |
| Schmitt Trigger Inputs | Input hysteresis ≥ 0.05×VCC - rejects EMI-induced glitches on SDA/SCL lines in noisy industrial environments |
| Output Slope Control | Controlled rise/fall times (TR/TF ≤ 300 ns at 2.5V–5.5V) - prevents ground bounce and signal integrity issues on shared PCB traces |
| Page Write Buffer | 8-byte internal latch - reduces host CPU overhead by allowing burst writes up to full page without repeated address setup |
| ESD Protection | >4,000 V HBM - withstands electrostatic discharge during handling and board integration without external protection |
Applications
| Industrial Sensor Calibration | Automotive Body Control Module |
|---|---|
Use Scenario: Storing factory-calibrated offset/gain values for analog sensor front-ends in programmable logic controllers. IC Role / Device Role / Timing Role: Nonvolatile configuration storage accessed during system boot and runtime recalibration sequences. Use Value: Enables field-replaceable sensors without firmware reflash; retains calibration across power cycles and temperature extremes (–40°C to +125°C). | Use Scenario: Holding door lock actuator position maps and seat memory profiles in vehicle body electronics. IC Role / Device Role / Timing Role: Persistent parameter store interfaced via I²C to 8-bit microcontroller during wake-up and CAN message processing. Use Value: AEC-Q100 qualified operation ensures reliability under automotive thermal cycling and vibration; WP pin prevents corruption during brown-out events. |
| Consumer Appliance UI Settings | Medical Device Configuration |
Use Scenario: Saving user-selected display brightness, language, and timer presets in smart home appliances. IC Role / Device Role / Timing Role: Low-power EEPROM accessed infrequently via I²C during menu navigation or power-on initialization. Use Value: 1 µA standby current extends battery life in cordless devices; 200-year data retention guarantees settings persist over product lifetime. | Use Scenario: Storing FDA-mandated device serial numbers, calibration timestamps, and usage counters in portable diagnostic tools. IC Role / Device Role / Timing Role: Secure, tamper-resistant memory element with hardware write-protection enabled during normal operation. Use Value: Prevents unauthorized modification of regulatory-critical data; RoHS compliance supports global medical certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 24AA02-I/ST | Wider VCC range (1.7V–5.5V); lower 100 kHz max clock below 2.5V; same 2-Kbit density and SOIC-8 package | Supports single-supply battery-powered systems down to 1.7V; not rated for +125°C operation | Select when ultra-low-voltage operation is required and extended temperature is unnecessary |
| AT24C02D-SSHM-T | Same 2-Kbit capacity and I²C interface; 1 MHz max clock at 1.7V–5.5V; different device address (0x50 vs 0x50/0x51/0x52/0x53) | Higher-speed communication possible; requires address pin configuration verification; not AEC-Q100 qualified | Select for faster write throughput in non-automotive designs where Microchip qualification is not mandated |
Compared with 24LC02B-E/ST, the 24AA02-I/ST offers broader voltage flexibility but sacrifices extended temperature capability, while the AT24C02D-SSHM-T enables faster I²C rates but lacks automotive qualification and uses a different device addressing scheme requiring firmware review.
Availability
24LC02B-E/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, automotive body control modules, and medical device configuration requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 24LC02B-E/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 components, and memory solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The 24LC02B belongs to Microchip's 24XX02 family of I²C serial EEPROMs, engineered for reliable nonvolatile data storage in space-constrained, low-power, and mission-critical applications across automotive, industrial, and medical markets.
FAQ
What is the maximum I²C clock frequency supported by the 24LC02B-E/ST?
The 24LC02B-E/ST supports a maximum I²C clock frequency of 400 kHz when VCC is between 2.5V and 5.5V. This is explicitly specified in the Device Selection Table and AC Characteristics section of the DS20001709N datasheet. Operation below 2.5V is not permitted for this variant, distinguishing it from the 24AA02 and 24FC02 families.
Does the 24LC02B-E/ST require external pull-up resistors on SDA and SCL lines?
Yes, the 24LC02B-E/ST requires external pull-up resistors on both SDA and SCL lines because these pins use open-drain outputs. The datasheet recommends a 2 kΩ pull-up for 400 kHz operation at 2.5V–5.5V. Pull-up values must be adjusted based on bus capacitance and speed requirements to meet timing parameters such as THD:STA and TSU:DAT.
How does the WP pin function on the 24LC02B-E/ST?
The WP (Write-Protect) pin on the 24LC02B-E/ST is an active-high hardware control. When tied to VCC, it disables all write operations to the entire memory array (addresses 00h–FFh), while read operations remain fully functional. When tied to VSS or left floating, normal read/write access is enabled. This feature prevents accidental overwrites during power transitions or firmware errors.
Is the 24LC02B-E/ST qualified for automotive applications?
Yes, the 24LC02B-E/ST is AEC-Q100 qualified for automotive applications. The "E" in the part number denotes the extended temperature grade (–40°C to +125°C), and the datasheet explicitly states AEC-Q100 qualification under Features. This makes it suitable for use in body control modules, infotainment systems, and other automotive subsystems requiring high-reliability nonvolatile memory.
What is the endurance rating of the 24LC02B-E/ST, and how is it measured?
The 24LC02B-E/ST has an endurance rating of more than 1,000,000 erase/write cycles, tested at 25°C and 5.5V in page mode per Table 1-1 Note 4. This value reflects guaranteed minimum cycles before parametric failure and is validated through accelerated stress testing - ensuring robustness for applications involving frequent configuration updates or event logging.
24LC02B-E/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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
24LC02B-E/ST FAQ
1.How can I place an order for 24LC02B-E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for 24LC02B-E/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 24LC02B-E/ST reliable?
The price and inventory of 24LC02B-E/ST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 24LC02B-E/ST is usually 5 days.
3.What payment methods are accepted for 24LC02B-E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 24LC02B-E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 24LC02B-E/ST?
24LC02B-E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 24LC02B-E/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 24LC02B-E/ST?
For technical support, including 24LC02B-E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 24LC02B-E/ST requirements.
6.How does Aetrix verify that 24LC02B-E/ST is sourced from the original manufacturer or authorized distributors?
All 24LC02B-E/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 24LC02B-E/ST meets industry standards.
7.What is the process for return or replacement of 24LC02B-E/ST?
All 24LC02B-E/ST units undergo pre-shipment inspection (PSI). If there is an issue with 24LC02B-E/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 24LC02B-E/ST part is unused and in its original packaging.
Return procedure for 24LC02B-E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
24LC02B-E/ST Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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