AT24C21

Features 2-wire Serial Interface Schmitt Trigger, Filtered Inputs For Noise Suppression DDC1™/ DDC2™ Interface Compliant for Monitor Identification Low-voltage Operation – 2.5 (VCC = 2.5V to 5.5V) Internally Organized 128 x 8 100 kHz (2.5V) Compatibility 8-byte Page Write Mode Write Protection Available Self-timed Write Cycle (10 ms max) High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years 8-lead PDIP and 8-lead JEDEC SOIC Packages Description The AT24C21 provides 1024 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 128 words of 8 bits each. The device is optimized for use in applications requiring data storage and serial transmission of configuration and control information. The AT24C21 features two modes of operation: Transmit-only Mode and Bidirectional Mode. Upon power-up, the AT24C21 will be in the Transmit-only Mode, sending a serial-bit stream of the ent...