The LH28F800SG-L/SGH-L flash memories with SmartVoltage technology are high-density, low-cost, nonvolatile, read/write storage solution for a wide range of applications. The LH28F800SG-L/SGH-L can operate at VCC = 2.7 V and VPP = 2.7 V. Their low voltage operation capability realizes longer battery life and suits for cellular phone application. Their symmetrically-blocked architecture, flexible voltage and enhanced cycling capability provide for highly flexible component suitable for resident flash arrays, SIMMs and memory cards. Their enhanced suspend capabilities provide for an ideal solution for code + data storage applications. For secure code storage applications, such as networking, where code is either directly executed out of flash or downloaded to DRAM, the LH28F800SG-L/SGH-L offer three levels of protection : absolute protection with VPP at GND, selective hardware block locking, or flexible software block locking.These alternatives give designers ultimate control of their code security needs.