72 MHz ARM Cortex-M4 with integrated mixed-signal peripherals
The NXP MK50DX128CLH7R is a 32-bit microcontroller from the Kinetis K50 series, built around an ARM Cortex-M4 core clocked at 72 MHz. It packs 128 KB of Flash program memory, 32 KB of SRAM, and 2 KB of EEPROM on-chip. The 22-channel 16-bit ADC and single 12-bit DAC let it handle analog sensor inputs and generate analog outputs without external converters. Connectivity includes USB OTG for direct host/peripheral operation, plus EBI/EMI for external memory or parallel-bus expansion. Standard serial interfaces — I²C, SPI, UART/USART, and IrDA — cover most sensor and actuator links. The 35 general-purpose I/O lines in the 64-LQFP package leave enough headroom for a keypad, display, and a few discrete controls without needing a port expander.
Package and rework considerations
The 64-LQFP package (10x10 mm body) is a garden-variety QFP. Tape & Reel and Cut Tape options are available.
Sourcing and lifecycle
The MK50DX128CLH7R carries an Active lifecycle status — no end-of-life notice, no last-time-buy window to track. That means it is still in regular production and can be specified into new designs without worrying about a forced redesign cycle. It is ROHS3 compliant, so no conflict with EU or global RoHS requirements.