Kinetis K12: 50MHz Cortex-M4 Performance MCU, 192KB Flash, 32KB SRAM, 121-MAPBGA
Freescale
Freescale - PK12DX256VLF5
Freescale - MK12DN512VMC5
$6.66 - $13.78
Freescale - MK12DX256VMC5
$5.26 - $9.39
Freescale - MK12DN512VLH5
Freescale - MK12DN512VLK5
$5.72
Freescale - MK12DX128VLF5
$7.29