The ZB25D40:

The ZB25D40 also offers a sophisticated method for protecting individual blocks against erroneous or malicious program and erase operations.By providing the ability to individually protect and unprotect blocks,a system can unprotect a specific block to modify its contents while keeping the remaining blocks of the memory array securely protected.This is useful in applications where program code is patched or updated on a subroutine or module basis,or in applications where data storage segments need to be modified without running the risk of errant modifications to the program code segments.

The ZB25D40 is designed to allow either single Sector/Block at a time or full chip erase operation.The ZB25D40 can be configured to protect part of the memory as the software protected mode.The device can sustain a minimum of 100K program/erase cycles on each sector or block.

The ZB25D40 provides an ideal storage solution for systems with limited space,signal connections,and power.These memories'flexibility and performance is better than ordinary serial flash devices.They are ideal for code shadowing to RAM,executing code directly(XIP),and storing reprogrammable data.