The SST39VF800A-70-4I-B3KE is a 2M-bit (256 K × 8) Flash memory device produced by Microchip. It is available in 44-pin TSSOP, 44-pin VFBGA, and 48-pin TQFP packages. It is organized as 256Kx8 and has an operating temperature range of -40 to 85°C. This device supports the latest features like Dual-Bank boot, Burst mode, and extends-temperature capability. Its Power-On Address/Data Retention capability ensures that data is retained even after power is removed. It has high-speed write performance in Burst Mode (7.5•25 MHz typical access times and up to 70 MHz maximum read performance). It offers low power consumption with fast write times (automatically switching between fast and slow write modes depending on the current used). Additionally, the device has circuitry for monitoring memory failure, an on-chip oscillator, and write protection feature.