Description
●The AT24C256B provides 262,144 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 32,768 words of 8 bits each. The device’s cascadable feature allows up to eight 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 MAP, 8-lead Ultra Thin SAP, 8-lead TSSOP, and 8-ball dBGA2 packages. In addition, the entire family is available in a 1.8V (1.8V to 3.6V) version.
●Features
●• Low-voltage and Standard-voltage Operation
● – 1.8 (VCC = 1.8V to 3.6V)
●• Internally Organized as 32,768 x 8
●• Two-wire Serial Interface
●• Schmitt Trigger, Filtered Inputs for Noise Suppression
●• Bidirectional Data Transfer Protocol
●• 1 MHz (3.6V, 2.7V, 2.5V), and 400 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
●• Lead-free/Halogen-free Devices Available
●• 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, EIAJ SOIC, 8-lead MAP, 8-lead Ultra Thin Small Array Package (SAP), 8-lead TSSOP, and 8-ball dBGA2 Packages
●• Die Sales: Wafer Form, Waffle Pack and Bumped Wafers
