MK21DX256 Serie
| Fr. Teil# | Beschreibung | Hersteller | Auf Lager | Operation |
| MK21DX256AVMC5 | IC MCU 32B 256KB FLASH 121MAPBGA | NXP USA Inc. | 87 |
|
| MK21DX256VMC5 | IC MCU 32B 256KB FLASH 121MAPBGA | Freescale Semiconductor | 4692 |
|
| MK21DX256AVLK5 | KINETIS K21: 50MHZ CORTEX-M4 MCU | Freescale Semiconductor | 9985 |
|