• Security and integrity modules

　　– Hardware CRC module to support fast cyclic

　　redundancy checks

　　– Tamper detect and secure storage

　　– Hardware random-number generator

　　– Hardware encryption supporting DES， 3DES， AES，

　　MD5， SHA-1， and SHA-256 algorithms

　　– 128-bit unique identification （ID） number per chip

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Freescale Semiconductor Data Sheet Technical Data Document Number K21P121M120SF5 Rev 3 082013 K21 SubFamily Data Sheet Supports the following MK21FX512VMC12 MK21FN1M0VMC12 Features Operating Characteristics Voltage range 171 to 36 V Flash write voltage range 171 to 36 V Temperature range ambient 40 to 105C Performance Up to 120 MHz ARM CortexM4 core with DSP instructions delivering 125 Dhrystone MIPS per MHz Memories and memory interfaces Up to 1 MB program flash memory on non FlexMemory......