Built with an Arm Cortex-M33 core, NXP’s MCX A14x and A15x series of general-purpose MCUs operate at 48 MHz and 96 MHz, respectively. The devices target a broad range of applications, including motor control, industrial sensing, smart metering, automation, and smart home devices.
Both series offer high levels of integration with scalable device options. Peripherals include timers that generate three complementary PWM pairs with deadband insertion and a 4-Msample/s, 12-bit ADC with hardware windowing and averaging. Along with UART, SPI, and I2C interfaces, the MCUs provide an I3C communication interface. I3C improves on the performance and power use of I2C, while maintaining backward compatibility for most devices.
MCX A microcontrollers employ a capless LDO power subsystem that operates from 1.7 V to 3.6 V. Devices consume 59 µA/MHz (3 V, 25°C) in active mode running Coremark from internal flash. In deep sleep mode, current consumption drops to 6.5 µA with 10-µs wake-up and full SRAM retention (3 V, 25°C). Deep power down mode trims consumption to less than 400 nA with 2.78-ms wake.
Packaging options for the MCX A parts include 32-pin QFN, 48-pin QFN, and 64-pin LQDP. MCUs are I/O and pin-compatible across package types, simplifying migration and upgrades. MCX A14x/15x devices are available now through NXP’s distributor network.
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