STM32L4A6XG datasheet(98/282 Pages) STMICROELECTRONICS

tên linh kiện	STM32L4A6XG

Giải thích chi tiết về linh kiện	Ultra-low-power Arm® Cortex®-M4 32-bit MCUFPU, 100DMIPS, 1MB Flash, 320KB SRAM, USB OTG FS, audio, AESHASH, ext. SMPS

PDF	282 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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1. PC13, PC14 and PC15 are supplied through the power switch. Since the switch only sinks a limited amount of current(3 mA), the use of GPIOs PC13 to PC15 in output

mode is limited:

- The speed should not exceed 2 MHz with a maximum load of 30 pF.

- These GPIOs must not be used as current sources (e.g. to drive an LED).

2. After a Backup domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the content of the RTC registers which are not reset by the

system reset. For details on how to manage these GPIOs, refer to the Backup domain and RTC register descriptions in the RM0351 reference manual.

3. OPAMPx_VINM pins are not available as additional functions on pins PA1 and PA7 on UFBGA packages. On UFBGA packages, use the OPAMPx_VINM dedicated pins

available on M3 and M4 balls.

4. After reset, these pins are configured as JTAG/SW debug alternate functions, and the internal pull-up on PA15, PA13, PB4 pins and the internal pull-down on PA14 pin are

activated.

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