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CAT24C03, CAT24C05
2-Kb and 4-Kb I2C Serial EEPROM with Partial Array Write Protection
Description The CAT24C03/05 is a 2−Kb/4−Kb CMOS Serial EEPROM device
organized internally as 16/32 pages of 16 bytes each, for a total of 256x8/512x8 bits. These devices support both Standard (100 kHz) as well as Fast (400 kHz) I2C protocol.
Data is written by providing a starting address, then loading 1 to 16 contiguous bytes into a Page Write Buffer, and then writing all data to non−volatile memory in one internal write cycle. Data is read by providing a starting address and then shifting out data serially while automatically incrementing the internal address count.
Write operations can be inhibited for upper half of memory by taking the WP pin High.