The SST39VF400A-70-4C-EK is a NOR Flash device from Microchip, with 256K x 16 bit memory array organized as 16 blocks of 16K words each, and a 70 ns access time. The device is packaged in a 44-pin TSOP type package, and can be used as a non volatile storage solution, allowing data to be retained even when power is lost. It is an ideal solution for applications where data must be stored, such as boot-up information, a user's personal information, system parameters, and settings. It is also ideal for use in automotive and consumer products.