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| PartNumber | MK21FX512AVLQ12 | MK21FX512AVMC12 | MK21FX512AVLQ12557 |
| Description | ARM Microcontrollers - MCU 512KB Flash 120MHz | ARM Microcontrollers - MCU 512KB Flash 120MHz | Cortex M4 RISC Microcontroller 32-Bit Flash |
| Manufacturer | NXP | NXP | - |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | LQFP-144 | BGA-121 | - |
| Core | ARM Cortex M4 | ARM Cortex M4 | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 120 MHz | 120 MHz | - |
| Program Memory Size | 512 kB | 512 kB | - |
| Data RAM Size | 128 kB | 128 kB | - |
| ADC Resolution | 16 bit | 16 bit | - |
| Number of I/Os | 104 I/O | 81 I/O | - |
| Operating Supply Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 105 C | + 105 C | - |
| Packaging | Tray | Tray | - |
| Product | MCU+DSP+FPU | MCU+DSP+FPU | - |
| Program Memory Type | Flash and FlexMemory | Flash and FlexMemory | - |
| Brand | NXP / Freescale | NXP / Freescale | - |
| Data RAM Type | SRAM | SRAM | - |
| Data ROM Size | 4 kB | 4 kB | - |
| Data ROM Type | EEPROM | EEPROM | - |
| Interface Type | CAN, I2C, I2S, UART, USB | CAN, I2C, I2S, UART, USB | - |
| Analog Supply Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | - |
| DAC Resolution | 12 bit | 12 bit | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 4 x 16 bit | 4 x 16 bit | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Factory Pack Quantity | 60 | 348 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Supply Voltage Min | 1.71 V | 1.71 V | - |
| Watchdog Timers | Watchdog Timer | Watchdog Timer | - |
| Part # Aliases | 935322198557 | 935322448557 | - |
| Unit Weight | 0.046530 oz | 0.005915 oz | - |