STM32L431 datasheet(7/200 Pages) STMICROELECTRONICS

7 / 200 page

DocID028800 Rev 1

7/200

STM32L431xx

List of tables

Table 1.

Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Table 2.

STM32L431xx family device features and peripheral counts . . . . . . . . . . . . . . . . . . . . . . . 13

Table 3.

Access status versus readout protection level and execution modes. . . . . . . . . . . . . . . . . 17

Table 4.

Functionalities depending on the working mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 5.

STM32L431xx peripherals interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 6.

DMA implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 7.

Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 8.

Internal voltage reference calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 9.

Timer feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 10.

I2C implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table 11.

STM32L431xx USART/LPUART features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 12.

SAI implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Table 13.

Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 14.

STM32L431xx pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Table 15.

Alternate function AF0 to AF7 (for AF8 to AF15 see Table 16) . . . . . . . . . . . . . . . . . . . . . 64

Table 16.

Alternate function AF8 to AF15 (for AF0 to AF7 see Table 15) . . . . . . . . . . . . . . . . . . . . . 69

Table 17.

STM32L431xx memory map and peripheral register boundary addresses . . . . . . . . . . . . 75

Table 18.

Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Table 19.

Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Table 20.

Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Table 21.

General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Table 22.

Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Table 23.

Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 83

Table 24.

Embedded internal voltage reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Table 25.

Current consumption in Run and Low-power run modes, code with data processing

running from Flash, ART enable (Cache ON Prefetch OFF) . . . . . . . . . . . . . . . . . . . . . . . 88

Table 26.

Current consumption in Run and Low-power run modes, code with data processing

running from Flash, ART disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Table 27.

Current consumption in Run and Low-power run modes, code with data processing

running from SRAM1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

Table 28.

Typical current consumption in Run and Low-power run modes, with different codes

running from Flash, ART enable (Cache ON Prefetch OFF) . . . . . . . . . . . . . . . . . . . . . . . 91

Table 29.

Typical current consumption in Run and Low-power run modes, with different codes

running from Flash, ART disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Table 30.

Typical current consumption in Run and Low-power run modes, with different codes

running from SRAM1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Table 31.

Current consumption in Sleep and Low-power sleep modes, Flash ON . . . . . . . . . . . . . . 93

Table 32.

Current consumption in Low-power sleep modes, Flash in power-down . . . . . . . . . . . . . . 94

Table 33.

Current consumption in Stop 2 mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Table 34.

Current consumption in Stop 1 mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Table 35.

Current consumption in Stop 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Table 36.

Current consumption in Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Table 37.

Current consumption in Shutdown mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Table 38.

Current consumption in VBAT mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 39.

Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Table 40.

Low-power mode wakeup timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Table 41.

Regulator modes transition times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Table 42.

Wakeup time using USART/LPUART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

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