NXP Kinetis K20 series, 32-bit ARM Cortex-M4 MCU, 120MHz, 256KB Flash, 48KB RAM, USB OTG, 33-ch 16-bit ADC, 1-ch 12-bit DAC, -40°C to 105°C, 100-LQFP (14×14mm), Tape & Reel.
| Parameter | Value |
|---|---|
| Series | Kinetis K20 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.71V ~ 3.6V |
| Operating temperature | -40°C ~ 105°C (TA) |
| Speed | 120MHz |
| Package | Tape & Reel (TR) |
| RAM size | 48K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | DMA, I²S, LVD, POR, PWM, WDT |
| Connectivity | I²C, IrDA, SPI, UART/USART, USB, USB OTG |
| Number of i (O) | 66 |
| Core processor | ARM® Cortex®-M4 |
| Case | 100-LQFP |
| Data converters | A/D 33x16b; D/A 1x12b |
| Program memory size | 256KB (256K x 8) |
The MK22FN256VLL12R runs a single-core ARM Cortex-M4 at 120 MHz, with a 256 KB Flash and 48 KB RAM partition. That clock rate lands it in the mid-band of the Kinetis K20 family.
The 100-LQFP (14×14 mm) package keeps the footprint manageable for a 4-layer board.
The DMA engine and the programmable delay block (LVD, POR, PWM, WDT) offload the core for time-critical tasks.
Within the same 100-LQFP footprint, the MK22FN512VLL12 (512 KB Flash, 128 KB RAM) is a pin-compatible drop-in upgrade. The base product number MK22FN256 shares the same pinout across the Flash density options, so a BOM swap requires only a firmware recompile for the larger memory map.
The core runs at 120 MHz, which is the maximum clock for this Cortex-M4 device in the Kinetis K20 series.