Atmel AT24C256B
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.FEATURES
● Low-voltage and Standard-voltage Operation – 1.8 (VCC = 1.8V to 5.5V)● Internally Organized as 32,768 x 8
● Two-wire Serial Interface
● Schmitt Trigger, Filtered Inputs for Noise Suppression
● Bidirectional Data Transfer Protocol
● 1 MHz (5.0V, 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 Ultra Thin Small Array Package (SAP), 8-lead TSSOP, and 8-ball dBGA2 Packages
● Die Sales: Wafer Form, Waffle Pack and Bumped Wafers Two-wire Serial EEPROM 256K (32,768 x 8) AT24C256B
DESCRIPTION
The devices are available in space-saving 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead Ultra Thin SAP, 8lead TSSOP, and 8-ball dBGA2 packages. In addition, the entire family is available in a 1.8V (1.8V to 5.5V) version.