Description
The AT25HP256/512 provides 262,144/524,288 bits of serial electrically erasable programmable read only memory (EEPROM) organized as 32,768/65,536 words of 8-bits each. The device is optimized for use in many industrial and commercial applications where high-speed, low-power, and low-voltage operation are essential. The AT25HP256/512 is available in a space saving 8-pin PDIP (AT25HP256/512), 8-pin EIAJ SOIC (AT25HP256), and 8-pin Leadless Array (AT25HP256/512) packages.

Features
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
• 10 MHz Clock Rate
• 128-Byte Page Mode Only for Write Operations
• Low-Voltage and Standard-Voltage Operation
   – 5.0 (VCC = 4.5V to 5.5V)
   – 2.7 (VCC = 2.7V to 5.5V)
   – 1.8 (VCC = 1.8V to 3.6V)
• Block Write Protection
   – Protect 1/4, 1/2, or Entire Array
• Write Protect (WP) Pin and Write Disable Instructions for
   Both Hardware and Software Data Protection
• High Reliability
   – Endurance: 100K Write Cycles
   – Data Retention: > 40 Years
   – ESD Protection: > 3000V
• 8-Pin PDIP, 8-Pin EIAJ SOIC, and 8-Pin Leadless Array Package