The NXP MKL15Z64VLH4 is a 32-bit ARM Cortex-M0+ MCU from the Kinetis KL1 series, clocked at 48 MHz with 64 KB Flash and 8 KB RAM. It operates from a single 1.71 V to 3.6 V supply and is rated for -40 to 105 °C, making it suitable for industrial control, motor drives, and outdoor telecom equipment where extended temperature range is required. The 64-LQFP package provides 54 I/O lines, and the peripheral set includes I²C, SPI, UART, LINbus, a touch-sensing interface (TSI), PWM, DMA, and a 16-channel 16-bit ADC plus one 12-bit DAC.
48 MHz core — what it means for the control loop
The 48 MHz Cortex-M0+ core handles sensor-fusion loops and basic motor commutation.
Memory sizing: 64 KB Flash, 8 KB RAM
64 KB Flash fits a moderate firmware image with a bootloader, application code, and a small parameter table. The 8 KB RAM limits data buffering — enough for a few hundred bytes of runtime variables and a modest UART FIFO, but not for large frame capture or heavy logging. Plan your stack and heap allocation early; the RAM ceiling is the first constraint in a firmware port.
Lifecycle and sourcing
The MKL15Z64VLH4 is listed as Active in production. It is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time. No official second source or successor is recorded — the Kinetis KL1 family is the direct line, and no pin-compatible alternate from another vendor is documented.