The AT24C256C-XHL-B: 256 Kbit, 32K x 8bit, Serial I2C (2-Wire), 1 MHz, TSSOP, 8 Pins, 262144-bit standard I²C serial EEPROM, 32768 words of 8-bit each.
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The AT24C64D-SSHM-B: 64kB Serial EEPROM IC with full memory write protect, supports up to eight devices on a single 2-wire bus, 8192 words x 8-bit, operates from 1.7 to 5.5V.
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