In terms of its memory type, it can be classified as Non-Volatile. It comes in a Tube. As you can see, it is embedded in 28-DIP (0.600, 15.24mm) case. The chip has an 256Kb 32K x 8 memory. There is a EEPROM-format memory used in this device, which is the memory format used by mainstream devices. -40°C~85°C TC is an extended operating temperature range, making this device ideal for demanding applications. A supply voltage of 4.5V~5.5V can be applied to it. There is a recommended mounting type of Through Hole for it. When selecting similar parts for the ic memory chip, AT28HC256 is often referred to. An 28-pin package is used to package this memory device. There is a note indicating that this memory chip operates at an 5V volt supply voltage. In order for this device to function properly, its operating temperature must not be less than -40°C. A temperature of no more than 85°C centigrade is recommended for the component to be operated, otherwise, damage might be inflicted on the component. This part should have a minimum supply voltage of 4.5V. The operating voltage shall not exceed 5.5V.