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What is STM32 HSE?
In STM32 wireless MCUs, based on Arm®(a) Cortex® cores, the RF clock is provided by a high frequency VCO, which takes as reference a signal created by an embedded oscillator using an external crystal. This crystal is the HSE (high-speed external) clock source of the RF synthesizer and of the microcontroller.
What is RCC STM32?
The RCC controller integrated inside STM32 products manages system and peripheral clocks. Many peripherals have their own clock, independent of the system clock. The RCC also manages the various resets present in the device.
What is RCC in microcontroller?
The RCC peripheral is used to control the internal peripherals, as well as the reset signals and clock distribution. They are used as clock sources for the hardware blocks, either directly or indirectly, via the four PLLs (PLL1, PLL2, PLL3 and PLL4) that allow to achieve high frequencies.
What is LSE clock?
LSE clock is enabled for LPTimer (Mbed tickless and sleep mode wakeup), RTC clock and possibly other interfaces that can use the LSE clock. The LSE clock typically uses a 32,768 kHz crystal and is automatically enabled on the first usage of LPTimer or RTC.
What is HSE and LSE?
According to the surface energy of the molecules on the surface, plastics are divided into two types – with a low energy surface (LSE plastics) and with a high energy surface (HSE plastics).
What is an HSE plastic?
High surface energy plastics, often called HSE plastics, have surface molecules with high energy levels. This means they require a less aggressive adhesive than LSE plastics because it’s easier for products to bond to HSE plastics than to LSE plastics. Some common HSE plastics include.
What is peripheral clock in microcontroller?
Peripheral clocks are derived from the clock that drives the CPU, which is called CCLK (or cclk). From: Fast and Effective Embedded Systems Design (Second Edition), 2017.