NXP Kinetis KL2 series, MKL25Z128VFM4, 32-bit ARM Cortex-M0+ MCU, 48MHz, 128KB Flash, 16KB RAM, USB OTG, 23 I/O, 32-HVQFN (5x5 mm), -40°C to 105°C.
| Parameter | Value |
|---|---|
| Series | Kinetis KL2 |
| Mounting | Surface Mount, Wettable Flank |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.71V ~ 3.6V |
| Operating temperature | -40°C~105°C(TA) |
| Speed | 48MHz |
| Package | Tray |
| RAM size | 16K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, LVD, POR, PWM, WDT |
| Connectivity | I²C, LINbus, SPI, UART/USART, USB, USB OTG |
| Number of i (O) | 23 |
| Core processor | ARM® Cortex®-M0+ |
| Case | 32-VFQFN Exposed Pad |
| Data converters | A/D 7x16b; D/A 1x12b |
| Program memory size | 128KB (128K x 8) |
The NXP MKL25Z128VFM4 is a 32-bit ARM Cortex-M0+ microcontroller from the Kinetis KL2 series, running at 48 MHz. It packs 128 KB of Flash and 16 KB of RAM, with a USB OTG controller and a 7-channel 16-bit ADC.
The 48 MHz clock on this Cortex-M0+ core runs USB full-speed (12 Mbps) without external PHY. It handles sensor polling, data logging, and simple control loops.
The MKL25Z128VFM4 datasheet is available from NXP's documentation portal under the base product number MKL25Z128. It covers the full Kinetis KL2 family electrical and timing specifications.
Within the Kinetis KL2 series, pin-compatible alternatives differ by Flash and RAM density. The MKL25Z64VFM4 (64 KB Flash) and MKL25Z256VFM4 (256 KB Flash) share the same 32-HVQFN footprint and peripheral set, allowing a drop-in upgrade or downgrade without PCB changes.
The MKL25Z128VFM4 runs at 48 MHz on its ARM Cortex-M0+ core, which is sufficient for USB full-speed operation and moderate sensor-fusion workloads.