NXP Kinetis K20 series, 32-bit ARM Cortex-M4 MCU at 50MHz, 128KB Flash, 16KB SRAM, USB OTG, 13-ch 16-bit A/D, 40 I/O, 1.71–3.6V supply, -40 to 105°C, 64-LQFP (10×10mm) tray.
| 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 | 16K 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) | 40 |
| Core processor | ARM® Cortex®-M4 |
| Case | 64-LQFP |
| Data converters | A/D 13x16b |
| Program memory size | 128KB (128K x 8) |
The MK20DN128VLH5 is a 32-bit ARM Cortex-M4 MCU clocked at 50 MHz with 128 KB Flash and 16 KB SRAM.
The Flash is large enough for a USB stack, a Modbus RTU library, and a modest application image.
Rated -40 to 105 °C and 1.71 V to 3.6 V supply, this MCU is specified for outdoor telecom cabinets, motor-drive control boards, and under-hood automotive auxiliary modules.
Within the Kinetis K20 family, the MK20DN256VLH5 (256 KB Flash, same 64-LQFP package) is pin-compatible and offers double the program memory for firmware growth. No official second-source alternate from another manufacturer is listed.
The MK20DN128VLH5 is rated for -40 to 105 °C ambient operating temperature, suitable for industrial and extended-temperature environments.
Yes, the MK20DN128VLH5 is RoHS3 compliant.
The MK20DN128VLH5 is a Kinetis K20 series device and is supported by the NXP Kinetis SDK and MCUXpresso toolchain. The SDK provides peripheral drivers, middleware (USB, FATFS), and example projects for this part.