Kinetis K20: 50MHz Cortex-M4 Performance MCU, 128KB Flash, 16KB SRAM, Full-Speed USB, 64-LQFP
Freescale
Freescale - MK20DN128VFM5
* $4.30 - $6.14
Freescale - MK20DN128VFT5
$4.57
Freescale - MK20DN128VLF5
$4.09 - $6.15
Freescale - MK20DN128VMP5
$4.93 - $6.82
Freescale - MK20DN32VFM5
$2.58
Freescale - MK20DN32VFT5
$3.27