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24LC21-I/P - 1Kbit I2C EEPROM Memory IC

The 24LC21-I/P from Microchip Technology is a high-performance 1Kbit (128 x 8) I2C serial EEPROM designed for reliable non-volatile data storage in embedded systems. This authentic component features a wide operating voltage range of 2.5V to 5.5V, making it ideal for both 3.3V and 5V applications.

Key Features & Benefits

  • 1Kbit Memory Capacity: 128 bytes organized as 128 x 8 bits for flexible data storage
  • I2C Interface: Industry-standard two-wire serial interface with 400kHz clock frequency for fast communication
  • Wide Voltage Range: Operates from 2.5V to 5.5V, compatible with most microcontroller systems
  • Industrial Temperature Range: Reliable operation from -40°C to 85°C for demanding environments
  • Low Power Consumption: Ideal for battery-powered and energy-efficient applications
  • Through-Hole Package: Easy-to-solder 8-DIP (0.300", 7.62mm) package for prototyping and production
  • Fast Write Cycle: 10ms write cycle time for efficient data updates
  • Quick Access Time: 900ns access time for rapid data retrieval

Common Applications

The 24LC21-I/P is perfect for storing configuration data, calibration parameters, user settings, serial numbers, and other critical information in microcontroller-based systems. Popular in automotive electronics, industrial controls, consumer electronics, medical devices, and IoT applications.

Why Choose HQICKEY?

At HQICKEY, we guarantee 100% authentic Microchip components with full manufacturer warranty support. Every 24LC21-I/P chip is sourced directly from authorized distributors and undergoes strict quality verification. We offer global shipping, technical support, and competitive pricing for both prototype quantities and volume orders.

Related Products & Resources

Looking for more memory solutions? Explore our complete Memory ICs Collection featuring EEPROM, Flash, SRAM, and other memory technologies from leading manufacturers.

Stay updated with the latest semiconductor industry news, technical articles, and product announcements on our HQICKEY Blog.

Order your authentic 24LC21-I/P EEPROM today and experience reliable memory storage for your embedded projects!

Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Tube |
Memory Type Non-Volatile
Memory Format EEPROM
Technology EEPROM
Memory Size 1Kbit
Memory Organization 128 x 8
Memory Interface I2C
Clock Frequency 400 kHz
Write Cycle Time - Word, Page 10ms
Access Time 900 ns
Voltage - Supply 2.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Supplier Device Package 8-PDIP
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