STM32F051R4T6TR STMicroelectronics, STM32F051R4T6TR Datasheet - Page 32

• Manufacturer Part Number: STM32F051R4T6TR
• Description: ARM Microcontrollers - MCU ARM Cortex M0 16kB 48 MHz CPU 8kB Flash
• Manufacturer: STMicroelectronics

Specifications of STM32F051R4T6TR

• Rohs: yes

Pinouts and pin description
Table 13.
1. PC13, PC14 and PC15 are supplied through the power switch. Since the switch only sinks a limited amount of current
2. After the first backup domain power-up, PC13, PC14 and PC15 operate as GPIOs. Their function then depends on the
3. On LQFP32 package, PB2 and PB8 should be treated as unconnected pins (even when they are not available on the
4. After reset, these pins are configured as SWDAT and SWCLK alternate functions, and the internal pull-up on SWDAT pin
32/105
57
58
59
60
61
62
63
64
(3 mA), the use of GPIO 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 a current sources (e.g. to drive an LED).
content of the Backup registers which is not reset by the main reset. For details on how to manage these GPIOs, refer to
the Battery backup domain and BKP register description sections in the reference manual.
package, they are not forced to a defined level by hardware).
and internal pull-down on SWCLK pin are activated.
Pin number
41
42
43
44
45
46
47
48
28
29
30
31
32
1
-
-
Pin definitions (continued)
28
29
30
32
31
0
1
-
(function after
Pin name
BOOT0
reset)
VDD
VSS
PB5
PB6
PB7
PB8
PB9
I/O
I/O
I/O
I/O
I/O
S
S
I
Doc ID 022265 Rev 3
FTf
FTf
FTf
FTf
FT
B
Notes
(3)
I2C1_SMBA, TIM16_BKIN,
I2C1_SDA, USART1_RX,
TIM17_CH1, EVENTOUT
I2C1_SCL, USART1_TX,
TIM16_CH1, TSC_SYNC
SPI1_MOSI/I2S1_SD,
Alternate functions
I2C1_SDA, IR_OUT,
I2C1_SCL, CEC,
TIM16_CH1N,
TIM17_CH1N,
TSC_G5_IO3
TSC_G5_IO4
TIM3_CH2
Boot memory selection
Digital power supply
Pin functions
Ground
Additional functions
STM32F051x