STM32L082KB datasheet(23/132 Pages) STMICROELECTRONICS

部件名	STM32L082KB

功能描述	Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs, AES

PDF	132 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

23 / 132 page

DS10688 Rev 7

23/132

STM32L082xx

Functional overview

•

Startup clock

After reset, the microcontroller restarts by default with an internal 2.1 MHz clock (MSI).

The prescaler ratio and clock source can be changed by the application program as

soon as the code execution starts.

•

Clock security system (CSS)

This feature can be enabled by software. If an HSE clock failure occurs, the master

clock is automatically switched to HSI and a software interrupt is generated if enabled.

Another clock security system can be enabled, in case of failure of the LSE it provides

an interrupt or wakeup event which is generated if enabled.

•

Clock-out capability (MCO: microcontroller clock output)

It outputs one of the internal clocks for external use by the application.

Several prescalers allow the configuration of the AHB frequency, each APB (APB1 and

APB2) domains. The maximum frequency of the AHB and the APB domains is 32 MHz. See

Figure 2 for details on the clock tree.

STM32L082KB 数据表(PDF) 23 Page - STMicroelectronics