AT24C256B - ATMEL Corporation

AT24C256B Two-wire Serial EEPROM

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 opera.

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-le.