AT24C256 Datasheet



The AT24C256 /128 provides 131,072/262,144 bits of serial electrically erasable and programmable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each. The device’s cascadable feature allows up to 4 devices to share a common Two-wire bus. The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential.The devices are available in space-saving 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead MAP (24C128), 8-lead TSSOP, 8-lead SOIC Array Package and 8-ball dBGA2 packages. In addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 3.6V) versions. AT24C256 Features • Low-voltage and Standard-voltage Operation 2.7 (VCC = 2.7V to 5.5V) 1.8 (VCC = 1.8V to 3.6V)• Internally Organized 16,384 x 8 and 32,768 x 8• Two-wire Serial Interface• Schmitt Trigger, Filtered Inputs for Noise Suppression• Bidirectional Data Transfer Protocol• 1 MHz (5V), 400 kHz (2.7V, 2.5V) and 100 kHz (1.8V) Compatibility• Write Protect Pin for Hardware and Software Data Protection• 64-byte Page Write Mode (Partial Page Writes Allowed)• Self-timed Write Cycle (5 ms Max)• High Reliability Endurance: One Million Write Cycles Data Retention: 40 Years• Extended Temperature and Lead-free/Halogen-free Devices Available• 8-lead JEDEC PDIP, 8-lead JEDEC and EIAJ SOIC, 8-lead MAP, 8-lead TSSOP, 8-lead SAP and 8-ball dBGA2 Packages• Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers


[{"Name":"Manufacturer","Value":"Atmel "},{"Name":"Memory Size","Value":"256 Kbit"},{"Name":"Organization","Value":"32 K x 8 "},{"Name":"Operating Supply Voltage","Value":"1.8 V, 2.7 V "},{"Name":"Interface Type","Value":"2-Wire "}]

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