The latter N is normal conventional, H is high temperature, 08, 16 represents memory It is still a conversion of 8 units, 1MByte = 8Mbit, so 08 is 1M, 16 is 2M
{The difference between different versions of ESP8285} ESP8285N08 standard 1M version ESP8285H08 high temperature 1M version ESP8285N16 2M version ESP8285H16 high temperature 2M version ESP8285 conventional standard version is 1M room temperature version ESP8285N08