Atmel AT24C21
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.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
Upon power-up, the AT24C21 will be in the Transmit-only Mode, sending a serial-bit stream of the ent