MK21DX256AVLK5
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 256KB FLASH 80LQFP
MK21DX256AVMC5
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 256KB FLASH 121MAPBGA
MK21DX256VLK5
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 256KB FLASH 80LQFP
MK21DX256VMC5
Manufacturers：
NXP Semiconductors/Freescale Semiconductor, Inc.
Description：
IC MCU ARM 256KB FLASH 121BGA