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Description

The AT24C128/256 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 2-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 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.

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

? 2-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 Typical)

? High Reliability

– Endurance: One Million Write Cycles

– Data Retention: 40 Years

? Automotive Grade, Extended Temperature and Lead-Free Devices Available

? 8-lead JEDEC PDIP, 8-lead JEDEC and EIAJ SOIC, 8-lead MAP, 8-lead TSSOP and 8-ball

dBGA2? Packages