24LC21AT-I/SN
- Mfr.Part #
- 24LC21AT-I/SN
- Manufacturer
- Microchip Technology
- Package / Case
- 8-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Stock
- 30
- In Stock :
- 30
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- Manufacturer :
- Microchip Technology
- Product Category :
- Memory
- Product Status :
- Active
- Memory Interface :
- I2C
- RoHS Status :
- ROHS3 Compliant
- Nominal Supply Current :
- 3mA
- Base Product Number :
- 24LC21
- Memory Format :
- EEPROM
- Radiation Hardening :
- No
- Supply Voltage-Max (Vsup) :
- 5.5V
- Number of Functions :
- 1
- Memory Type :
- Non-Volatile
- Packaging :
- Tape and Reel (TR)
- Series :
- --
- Lead Free :
- Lead Free
- Supply Voltage-Min (Vsup) :
- 2.5V
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Operating Mode :
- SYNCHRONOUS
- Operating Supply Current :
- 1 mA
- ECCN Code :
- EAR99
- Power Supplies :
- 3/5V
- Height Seated (Max) :
- 1.75mm
- Length :
- 4.9mm
- Data Retention Time-Min :
- 200
- Factory Lead Time :
- 6 Weeks
- Package / Case :
- 8-SOIC (0.154, 3.90mm Width)
- Maximum Operating Temperature :
- + 85 C
- I2C Control Byte :
- 1010000R
- Peak Reflow Temperature (Cel) :
- 260
- Seated Height-Max :
- 1.75 mm
- Standby Current-Max :
- 0.00003A
- Memory Density :
- 1024 bit
- Mount :
- Surface Mount
- Write Cycle Time-Max (tWC) :
- 10ms
- Interfaces :
- Serial (I2C)
- Programming Voltage :
- 2.5 V to 5.5 V
- Package Shape :
- RECTANGULAR
- Base Part Number :
- 24LC21A
- Qualification Status :
- Not Qualified
- Product Category :
- EEPROM
- Memory Size :
- 1Kb 128 x 8
- Write Cycle Time - Word, Page :
- 10ms
- Endurance :
- 1000000 Write/Erase Cycles
- Operating Supply Voltage :
- 2.5 V to 5.5 V
- RoHS :
- Details
- Number of Words :
- 128 words
- Surface Mount :
- yes
- Memory IC Type :
- EEPROM
- Height :
- 1.25 mm (Min)
- Clock Frequency :
- 400kHz
- Manufacturer :
- Microchip
- Temperature Grade :
- Industrial
- Data Retention :
- 200 Year
- Voltage - Supply :
- 2.5V~5.5V
- Mounting Type :
- Surface Mount
- Organization :
- 128 x 8
- Supply Current-Max :
- 0.003 mA
- Product Type :
- EEPROM
- Parallel/Serial :
- Serial
- Terminal Position :
- Dual
- Number of Terminations :
- 8
- Published :
- 2003
- Terminal Pitch :
- 1.27mm
- Number of Terminals :
- 8
- HTS Code :
- 8542.32.00.51
- Time@Peak Reflow Temperature-Max (s) :
- 40
- Width :
- 3.9mm
- Access Time :
- 900ns
- Interface :
- 2-Wire, I2C, Serial
- Package :
- Tape and Reel (TR);Cut Tape (CT);Digi-Reel®;
- Subcategory :
- Memory and Data Storage
- Operating Temperature :
- -40°C~85°C TA
- Serial Bus Type :
- I2C
- Memory Organization :
- 128 x 8
- JESD-30 Code :
- R-PDSO-G8
- Supplier Device Package :
- 8-SOIC
- Number of Pins :
- 8
- Pbfree Code :
- yes
- Density :
- 1 kb
- Reach Compliance Code :
- Compliant
- Supply Voltage :
- 3V
- Mounting Style :
- SMD/SMT
- Pin Count :
- 8
- Interface Type :
- 2-Wire, I2C
- JESD-609 Code :
- e3
- Terminal Finish :
- Matte Tin (Sn)
- Terminal Form :
- Gull wing
- Memory Width :
- 8
- Additional Feature :
- 2-WIRE SERIAL INTERFACE
- Minimum Operating Temperature :
- - 40 C
- Contact Plating :
- Tin
- Brand :
- Microchip Technology
- Datasheets
- 24LC21AT-I/SN

Memory Microchip Technology 24LC21AT-I/SN Overview
The Memory Microchip Technology 24LC21AT-I/SN is a highly reliable 1 Kbit EEPROM designed for data storage in applications requiring low power and high performance. This integrated circuit, housed in an 8SOIC package, operates on an I2C bus with a speed of up to 400 kHz, making it ideal for sophisticated yet space-conscious technology solutions. Its robust design ensures stability and endurance, particularly suitable for B2B customers looking to integrate dependable memory solutions in bulk quantities across various applications.
24LC21AT-I/SN Features
This EEPROM boasts several key features that make it suitable for a wide range of applications:
- 1 Kbit of EEPROM memory allows for efficient data storage without high costs.
- I2C Serial Interface ensures compatibility with most microcontrollers, facilitating easy integration into existing platforms.
- Operational at 400 kHz, providing sufficient speed for a variety of applications without compromising power consumption.
- Low-voltage operation, ranging from 2.5V to 5.5V, which enables use in battery-powered devices.
- Extended temperature range, making it robust for industrial environments.
24LC21AT-I/SN Applications
- Consumer Electronics: Used in smart home devices for user settings storage, enabling personalization and flexibility.
- Industrial Automation: Integrates into control systems for logging events and sensor data, essential for predictive maintenance and operational efficiency.
- Automotive Applications: Stores configuration data in various electronic control units, aiding in customization and error logging.
- Telecommunications: Helps manage network devices by storing firmware settings and other critical configuration data, ensuring network reliability and performance.
- Medical Devices: Critical in storing calibration data and patient-specific settings in various therapeutic and diagnostic machines, enhancing device functionality and safety.
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