This document describes the features and characteristics of the A29002/A290021 series 256K x 8 bit CMOS 5.0 Volt-only, Boot Sector Flash Memory, including voltage requirements, access times, current consumption, flexible sector architecture, sector protection, boot block configurations, embedded erase algorithms, embedded program algorithm, program/erase cycles per sector, data retention, compatibility, data polling and toggle bits, erase suspend/erase resume, etc.