MK9221ECP3 POS Machine 1.CPU : ARM922T kernel processor 2.200MHz main frequency 3. ... -proof mechanism protecting datas,such as switches, protective nets,voltage,temperature,frequency etc.True random number generator4KB resettable NV SRAM is ... multi physical and logical protection mechanisms,which include environmental sensors(temperature,voltage,frequency),true hardware RNG,RTC,4KB safety of non ...