24LC21AT/SN
- Mfr.Part #
- 24LC21AT/SN
- Manufacturer
- Microchip Technology
- Package / Case
- 8-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- IC EEPROM 1KBIT I2C 400KHZ 8SOIC
- Stock
- 3,292
- In Stock :
- 3,292
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- Manufacturer :
- Microchip Technology
- Product Category :
- Memory
- JESD-609 Code :
- e3
- Product Type :
- EEPROM
- Memory Type :
- Non-Volatile
- Supply Voltage :
- 3V
- Temperature Grade :
- COMMERCIAL
- Base Product Number :
- 24LC21
- Interface Type :
- Serial (I2C)
- Serial Bus Type :
- I2C
- Write Cycle Time-Max (tWC) :
- 10ms
- I2C Control Byte :
- 1010000R
- Supply Current-Max :
- 0.003 mA
- Operating Supply Voltage (Min) :
- 2.5(V)
- Operating Supply Current :
- 1 mA
- Brand :
- Microchip Technology
- Supply Current :
- 3(mA)
- Data Retention Time-Min :
- 200
- Voltage - Supply :
- 2.5V~5.5V
- Number of Pins :
- 8
- Density :
- 1 kb
- Memory Size :
- 1Kb 128 x 8
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Memory IC Type :
- EEPROM
- Product Category :
- EEPROM
- Programmable :
- yes
- Manufacturer :
- Microchip
- Operating Temperature Classification :
- COMMERCIAL
- Operating Temperature :
- 0°C~70°C TA
- Operating Temp Range :
- 0C to 70C
- Contact Plating :
- Tin
- Parallel/Serial :
- Serial
- Pin Count :
- 8
- Access Time :
- 900ns
- Package Shape :
- RECTANGULAR
- Write Protection :
- yes
- Output Characteristics :
- OPEN-DRAIN
- ECCN Code :
- EAR99
- Number of Words :
- 128 words
- Terminal Finish :
- Matte Tin (Sn)
- Minimum Operating Temperature :
- 0 C
- Length :
- 4.9mm
- Standby Current-Max :
- 0.00003A
- Height Seated (Max) :
- 1.75mm
- Clock Frequency :
- 400kHz
- Operating Temperature (Max) :
- 70C
- Supply Voltage-Max (Vsup) :
- 5.5V
- Factory Lead Time :
- 6 Weeks
- Access Time (Max) :
- 900(ns)
- Nominal Supply Current :
- 3mA
- Seated Height-Max :
- 1.75 mm
- Terminal Position :
- Dual
- Maximum Operating Temperature :
- + 70 C
- Number of Terminals :
- 8
- HTS Code :
- 8542.32.00.51
- Product Status :
- Active
- Height :
- 1.25 mm (Min)
- JESD-30 Code :
- R-PDSO-G8
- Mounting Type :
- Surface Mount
- Qualification Status :
- Not Qualified
- Package :
- Tape and Reel (TR);Cut Tape (CT);Digi-Reel®;
- Frequency :
- 0.4(MHz)
- Number of Terminations :
- 8
- Memory Interface :
- I2C
- Write Cycle Time - Word, Page :
- 10ms
- Subcategory :
- Memory and Data Storage
- RoHS :
- Details
- Package / Case :
- 8-SOIC (0.154, 3.90mm Width)
- Memory Format :
- EEPROM
- Operating Supply Voltage (Max) :
- 5.5(V)
- Organization :
- 128X8
- Mount :
- Surface Mount
- Memory Width :
- 8
- Surface Mount :
- yes
- Peak Reflow Temperature (Cel) :
- 260
- Radiation Hardening :
- No
- Lead Free :
- Lead Free
- Operating Mode :
- SYNCHRONOUS
- Mounting :
- Surface Mount
- Width :
- 3.9mm
- Time@Peak Reflow Temperature-Max (s) :
- 40
- Rad Hardened :
- No
- Published :
- 2005
- Programming Voltage :
- 2.5 TO 5.5
- Operating Supply Voltage :
- 2.5 V to 5.5 V
- Terminal Form :
- Gull wing
- Reach Compliance Code :
- Compliant
- Mounting Style :
- SMD/SMT
- Supply Voltage-Min (Vsup) :
- 2.5V
- Number of Functions :
- 1
- Terminal Pitch :
- 1.27mm
- Power Supplies :
- 3/5V
- Operating Temperature (Min) :
- 0C
- Endurance :
- 1000000 Write/Erase Cycles
- Series :
- --
- Pbfree Code :
- yes
- Interface :
- I2C, Serial
- RoHS Status :
- ROHS3 Compliant
- Data Retention :
- 200
- Supplier Device Package :
- 8-SOIC
- Memory Density :
- 1024 bit
- Operating Supply Voltage (Typ) :
- 3.3/5(V)
- Package Type :
- SOIC N
- Packaging :
- Tape and Reel (TR)
- Base Part Number :
- 24LC21A
- Memory Organization :
- 128 x 8
- Datasheets
- 24LC21AT/SN

Memory Microchip Technology 24LC21AT/SN Overview
The Memory Microchip Technology 24LC21AT/SN is a state-of-the-art EEPROM IC designed for high reliability and efficiency. Crafted by the renowned Microchip Technology, this EEPROM offers a compact solution with a 1 Kbit storage capacity, ideal for applications requiring small data buffers. Its I2C interface facilitates simple and fast data transfer at speeds up to 400 kHz, making it highly suitable for modern electronic systems where space and power consumption are critical considerations. The small footprint of the 8SOIC package also ensures ease of integration into existing designs, enhancing system stability and data integrity.
24LC21AT/SN Features
The 24LC21AT/SN EEPROM includes several key features that make it highly adaptable and efficient for a wide range of uses:
- 1 Kbit of memory capacity, ideal for storing configuration settings and other small data requirements.
- I2C serial interface, ensuring compatibility with most microcontrollers and facilitating easy integration.
- Operation at a frequency of up to 400 kHz, allowing for quick data access and programming.
- Low-voltage operation, which helps to minimize power consumption and extend battery life in portable devices.
- Durable 8SOIC packaging, providing robust protection against physical and environmental factors.
24LC21AT/SN Applications
- Consumer Electronics: Used in TVs, home audio systems, and other consumer electronics for storing user settings and preferences. This allows devices to "remember" user configurations between power cycles.
- Medical Devices: Implements in portable medical monitoring devices, ensuring calibration data and device settings are retained securely and accurately.
- Industrial Automation: Provides memory solutions for small-scale automation controllers and sensors, facilitating complex machine-to-machine communication with reliable data storage.
- Automotive Applications: Integrates into automotive systems for storing non-volatile data essential for operation, such as user settings and fault codes.
- Telecommunication Equipment: Utilized in network devices like routers and switches for storing firmware settings and operational parameters to ensure network reliability and performance.
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