The stm chip belongs to arm.
Is STM32 based on ARM? Cortex? The 32-bit flash memory microcontroller with the core of the M 3 processor opens up a new free development space for MCU users, and provides a variety of software and hardware AIDS that are easy to use. The STM32 MCU combines high performance, real-time performance, digital signal processing, low power consumption and low voltage, while maintaining high integration and easy development characteristics. The most powerful product lineup in the industry, processors based on industry standards, and a large number of hardware and software development tools make STM32 microprocessors the ideal choice for all kinds of small and medium-sized projects and complete platform solutions. Divided into different product families according to kernel architecture.
Originally a well-known company in the microprocessor industry, ARM is a British company that is the world's leading provider of semiconductor intellectual property (IP). More than 95% of the world's smartphones and tablets are powered by ARM architecture. ARM designs a large number of cost-effective, low-power RISC processors, related technologies and software. It has a leading position in the processor fields of smart phones, tablets, embedded control, multimedia digital, etc.