The MX29F400CBTI-90G/TRAY is a type of Flash memory manufactured by Macronix, a Taiwan-based semiconductor company. It is a 5V CMOS 4M-bit, single power supply, uniform sector, NOR Flash memory device. This device incorporates the standard 2 x 8-bit multiplexed address and data configuration allowing for fast, easy interfacing. This device is available in 48-pin TSOP and 48-pin PLCC packages. It also offers a wide operating temperature range of -40°C to +85°C and features an erase time of only 10 ms. The MX29F400CBTI-90G/TRAY is ideal for storing large amounts of data such as software code and images, making it suitable for high-density applications such as satellite, automotive, and industrial applications.