The 24LC21AT/SN is a serial EEPROM memory device manufactured by Microchip Technology. Below are its key specifications, descriptions, and features:
Specifications:
- Memory Size: 2 Kbit (256 x 8 bits)
- Interface: I²C (2-wire serial interface)
- Supply Voltage: 1.7V to 5.5V
- Operating Temperature Range: -40°C to +85°C
- Write Cycle Endurance: 1,000,000 cycles
- Data Retention: 200 years
- Package Type: 8-lead SOIC (SN)
- Page Write Buffer: 16 bytes
- Clock Frequency: Up to 400 kHz (I²C Fast mode)
- Write Protect Feature: Hardware protection for partial/full array
Descriptions:
- The 24LC21AT/SN is a low-power, byte-addressable EEPROM with I²C interface.
- It supports both random and sequential read operations.
- Features a built-in write-protect pin (WP) to prevent accidental writes.
- Designed for industrial and consumer applications requiring reliable non-volatile memory.
Features:
- Low Power Consumption: Ideal for battery-powered applications.
- Wide Voltage Range: Operates from 1.7V to 5.5V.
- Schmitt Trigger Inputs: Improved noise immunity.
- Self-Timed Write Cycle: No external components needed.
- ESD Protection: >4,000V (Human Body Model).
This device is commonly used in embedded systems, IoT devices, and other applications requiring small, reliable non-volatile memory.