STM32L4 datasheet(23/33 Pages) STMICROELECTRONICS

部件名	STM32L4

功能描述	This module presentation presents the key differences between the STM32L4 and the STM32L476/L486 devices.

PDF	33 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

23 / 33 page

Main Regulator: Voltage Scaling Range

• Main regulator output voltage:

• Range 1 :

•

Boost mode: 1.28V

•

Normal mode: 1.2V (default after reset)

• Range 2: 1.0V

• Power consumption optimization up

to 10% in range1 normal mode vs

boost mode

26 MHz

80 MHz

120 MHz

SYSCLK

(max frequency)

Range 2

1.0V

Range 1

normal

mode

1.2V

Range 1

boost mode

1.28V

Voltage scaling

Caution: To use USB or DSI, range 1 boost mode must be selected.

The main regulator output voltage can be programmed by

software in two power ranges Range 1 and Range 2.

In range1, the main regulator operates in two modes that

can be selected by software :

•

Range 1 normal mode: provides a typical output voltage

at 1.2 V, allowing a system clock up to 80 MHz.

•

Range 1 boost mode: provides a typical output voltage

at 1.28 V, allowing a system clock up to 120 MHz.

The range 1 normal mode optimizes the power

consumption up to 10% comparing to range 1 boost mode.

When you are using the USB or DSI peripheral, the range 1

boost mode must be selected.

STM32L4 数据表(PDF) 23 Page - STMicroelectronics

STM32L4 数据表(HTML) 23 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

数据表下载