As far as its memory type goes, it falls into the Volatile category. You can get memory ics in a Tray case. 44-TSOP (0.400, 10.16mm Width) case encloses it. There is an 4Mb 256K x 16 memory capacity on the chip. There is a mainstream memory format used by this device, which is called SRAM-format memory. Due to its wide temperature range of -40°C~85°C TA, this device is well suited to a wide range of applications that require high performance. The device is capable of handling a supply voltage of 4.5V~5.5V. Its recommended mounting type is Surface Mount. This memory runs on an 5V operating supply voltage. Each memory address is accessed by one of 1 ports on this chip. This device must operate at a minimum temperature of -40°C. It is recommended for operation at temperatures no higher than. It is recommended that this part be supplied with at least 4.5V volts. In order for it to operate properly, its voltage should not exceed 5.5V.