NXP Kinetis K20 series, MK22DX128VLK5, ARM Cortex-M4 single-core at 50 MHz, 128 KB Flash, 32 KB SRAM, 4 KB EEPROM, 20-ch 16-bit ADC, 12-bit DAC, USB OTG, 56 I/O, 80-LQFP, -40 to 105°C.
| 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 | 50MHz |
| Package | Tray |
| RAM size | 32K x 8 |
| Core size | 32-Bit Single-Core |
| EEPROM size | 4K x 8 |
| Peripherals | DMA, I²S, LVD, POR, PWM, WDT |
| Connectivity | I²C, IrDA, SPI, UART/USART, USB, USB OTG |
| Number of i (O) | 56 |
| Core processor | ARM® Cortex®-M4 |
| Case | 80-LQFP |
| Data converters | A/D 20x16b; D/A 1x12b |
| Program memory size | 128KB (128K x 8) |
The NXP MK22DX128VLK5 is a 32-bit ARM Cortex-M4 MCU clocked at 50 MHz with 128 KB Flash, 32 KB SRAM, and 4 KB EEPROM emulated in flash. It carries a 20-channel 16-bit ADC and a 12-bit DAC, plus USB OTG connectivity, in an 80-LQFP package.
128 KB Flash fits a FreeRTOS image plus a modest application stack. Both Flash and EEPROM are programmable in-system via the USB or UART bootloader, so firmware updates in the field are straightforward.
The MK22DX256VLK5 is a pin-compatible drop-in with 256 KB Flash instead of 128 KB, same 80-LQFP package, same peripheral set. The order code changes but the footprint and pinout match.
The core runs at 50 MHz, which is the maximum clock for this part. That delivers roughly 125 DMIPS with the Cortex-M4 DSP extensions.