The Microchip high-speed, 1024Kb SPI bus Serial EEPROM supports Byte Write and SPI Modes 0 and 3 operations. The EEPROM is organized as 262,144 x 8. Optimized for industrial and commercial applications where low-power and low-voltage operations are essential. The EEPROM is available in a variety of space-saving packaging options at 1.7V (Vcc = 1.7V to 5.5V) and 2.5V (Vcc = 2.5V to 5.5V). The 3-wire serial interface consists of a data input, output, and a shift clock. All programming cycles are completely self-timed, and no separate erase cycle is required before write. Block Write protection is program enabled and separate program enable and disable instructions are provided for additional data protection. Hardware data protection provided to protect against inadvertent write attempts to the status register. Any serial communication suspension can be accomplished without resetting the serial sequence.

• Low-voltage and Standard-voltage Operation Available ? 1.7V (VCC = 1.7V to 5.5V) ? 2.5V (VCC = 2.5V to 5.5V) 

• Serial Peripheral Interface (SPI) Compatible Interface 

• Supports SPI Modes 0 (0,0) and 3 (1,1) 

• High Speed Operation ? 5MHz Clock Rate from 1.7V to 5.5V 

• 256-byte Page Write Mode Support ? Partial Page Writes Allowed ? Byte Write Operation Supported

• Self-timed Write Cycle ? All Write Operations Complete Within 10ms Max 

• Block Write Protection ? Ability to Protect the Upper Quarter, Upper Half, or the Entire Memory Array

• Multiple Write Protection Methods ? Write Protect (WP) Pin and Write Disable instructions for Both Hardware and Software Data Protection

• High Reliability ? Endurance: 1,000,000 Write Cycles ? Data Retention: 40 Years ? Green Package Options (Lead-free/Halide-free/RoHS Compliant) ? 8-lead JEDEC SOIC and 8-ball Thin WLCSP 

• Die Sale Options ? Wafer form, Waffle Pack, and Bumped Die Available