STM32F051X8 datasheet(5/104 Pages) STMICROELECTRONICS

Part #	STM32F051X8

Description	Low- and medium-density advanced ARM??based 32-bit MCU

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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5 / 104 page

STM32F051x

List of tables

Doc ID 022265 Rev 3

5/105

List of tables

Table 1.

Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2.

STM32F051x family device features and peripheral counts . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 3.

Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 4.

Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 5.

Capacitive sensing GPIOs available on STM32F051x devices . . . . . . . . . . . . . . . . . . . . . 19

Table 6.

No. of capacitive sensing channels available on STM32F051x devices. . . . . . . . . . . . . . . 19

Table 7.

Timer feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 8.

Comparison of I2C analog and digital filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 9.

STM32F051x I2C implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 10.

STM32F051x USART implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 11.

STM32F051x SPI/I2S implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 12.

Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 13.

Pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 14.

Alternate functions selected through GPIOA_AFR registers for port A . . . . . . . . . . . . . . . 33

Table 15.

Alternate functions selected through GPIOA_AFR registers for port B . . . . . . . . . . . . . . . 34

Table 16.

STM32F051x peripheral register boundary addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 17.

Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Table 18.

Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table 19.

Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table 20.

General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 21.

Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 22.

Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 23.

Programmable voltage detector characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 24.

Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Table 25.

Typical and maximum current consumption from VDD supply at VDD = 3.6 V . . . . . . . . . . 46

Table 26.

Typical and maximum current consumption from the VDDA supply . . . . . . . . . . . . . . . . . . 47

Table 27.

Typical and maximum VDD consumption in Stop and Standby modes . . . . . . . . . . . . . . . 48

Table 28.

Typical and maximum VDDA consumption in Stop and Standby modes . . . . . . . . . . . . . . 49

Table 29.

Typical and maximum current consumption from VBAT supply. . . . . . . . . . . . . . . . . . . . . . 49

Table 30.

Typical current consumption in Run mode, code with data processing

running from Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 31.

Typical current consumption in Sleep mode, code running from Flash or RAM . . . . . . . . . 51

Table 32.

Switching output I/O current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 33.

Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Table 34.

High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Table 35.

Low-speed external user clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 36.

HSE oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Table 37.

LSE oscillator characteristics (fLSE = 32.768 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Table 38.

HSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Table 39.

HSI14 oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 40.

LSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Table 41.

Low-power mode wakeup timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Table 42.

PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Table 43.

Flash memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 44.

Flash memory endurance and data retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Table 45.

EMS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Table 46.

EMI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Table 47.

ESD absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

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