STM32F051R4 datasheet(10/104 Pages) STMICROELECTRONICS

Part #	STM32F051R4

Description	Low- and medium-density advanced ARM??based 32-bit MCU with 16 to 64 Kbytes Flash, timers, ADC, DAC and comm. interfaces

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STM32F051x

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Doc ID 022265 Rev 3

Table 2.

STM32F051x family device features and peripheral counts

Peripheral

STM32F051Kx

STM32F051Cx

STM32F051Rx

Flash (Kbytes)

16

32

64

16

32

64

16

32

64

SRAM (Kbytes)

4

848

48

Timers

Advanced

control

1 (16-bit)

General

purpose

5 (16-bit)

1 (32-bit)

Basic

1 (16-bit)

Comm.

interfaces

SPI [I2S](1)

1[1] (2)

2[1]

1[1] (2)

2[1]

I2C1(3)

1(3)

21(3)

2

USART

1(4)

21(4)

2

CEC

1

12-bit synchronized

ADC

(number of channels)

1

(10 ext. + 3 int.)

1

(16 ext. + 3 int.)

GPIOs

25 (on LQFP32)

27 (on UFQFPN32)

39

55

Capacitive sensing

channels

13 (on LQFP32)

14 (on UFQFPN32)

17

18

12-bit DAC

(number of channels)

1

(1)

Analog comparator

2

Max. CPU frequency

48 MHz

Operating voltage

2.0 to 3.6 V

Operating temperature

Ambient operating temperature: -40 °C to 85 °C / -40 °C to 105 °C

Junction temperature: -40 °C to 125 °C

Packages

LQFP32

UFQFPN32

LQFP48

LQFP64

1.

The SPI1 interface can be used either in SPI mode or in I2S audio mode.

2.

SPI2 is not present

3.

I2C2 is not present

4.

USART2 is not present

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