MK40DX64VMB7 , ARM® Cortex®-M4 Kinetis K40 Microcontroller IC 32-Bit 72MHz 64KB (64K x 8) FLASH 81-MAPBGA (10x10). we specialize in Freescale Semiconductor, Inc. MK40DX64VMB7 electronic components. MK40DX64VMB7 can be shipped within 24 hours after order.