MK21FX512AVLQ12
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU 32BIT 512KB FLASH 144LQFP
MK21FX512AVMC12
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU 32BIT 512KB FLASH 144MBGA
MK21FX512AVMD12
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU 32BIT 512KB FLASH 144MBGA
MK21FX512VLQ12
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 512KB FLASH 144LQFP
MK21FX512VMC12
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 512KB FLASH 121BGA
MK21FX512VMD12
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 512KB FLASH 144BGA