STM32F051K4U6 STMicroelectronics, STM32F051K4U6 Datasheet - Page 24

• Manufacturer Part Number: STM32F051K4U6
• Description: ARM Microcontrollers - MCU Entry-Level ARM M0 16kB 2.0V to 3.6V
• Manufacturer: STMicroelectronics

Specifications of STM32F051K4U6

• Product Category: ARM Microcontrollers - MCU
• Rohs: yes
• Core: ARM Cortex M0
• Processor Series: STM32F051xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 16 KB
• Data Ram Size: 8 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: UFQFN-48
• Mounting Style: SMD/SMT

Functional overview
3.17
3.18
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Universal synchronous/asynchronous receiver transmitters
(USART)
The device embeds up to two universal synchronous/asynchronous receiver transmitters
(USART1 and USART2), which communicate at speeds of up to 6 Mbit/s.
They provide hardware management of the CTS, RTS and RS485 DE signals,
multiprocessor communication mode, master synchronous communication and single-wire
half-duplex communication mode. The USART1 supports also SmartCard communication
(ISO 7816), IrDA SIR ENDEC, LIN Master/Slave capability, auto baud rate feature and has a
clock domain independent from the CPU clock, allowing the USART1 to wake up the MCU
from Stop mode.
The USART interfaces can be served by the DMA controller.
Refer to
Table 10.
1. X = supported.
Serial peripheral interface (SPI)/Inter-integrated sound
interfaces (I
Up to two SPIs are able to communicate up to 18 Mbits/s in slave and master modes in full-
duplex and simplex communication modes. The 3-bit prescaler gives 8 master mode
frequencies and the frame size is configurable from 4 bits to 16 bits.
One standard I
can operate as master or slave at simplex communication mode. It can be configured to
transfer 16 and 24 or 32 bits with16-bit or 32-bit data resolution and synchronized by a
specific signal. Audio sampling frequency from 8 kHz up to 192 kHz can be set by 8-bit
Hardware flow control for modem
Continuous communication using DMA
Multiprocessor communication
Synchronous mode
Smartcard mode
Single-wire half-duplex communication
IrDA SIR ENDEC block
LIN mode
Dual clock domain and wakeup from Stop mode
Receiver timeout interrupt
Modbus communication
Auto baud rate detection
Driver Enable
Table 10
STM32F051x USART implementation
2
USART modes/features
S interface (multiplexed with SPI1) supporting four different audio standards
for the differences between USART1 and USART2.
2
S)
Doc ID 022265 Rev 3
(1)
USART1
X
X
X
X
X
X
X
X
X
X
X
X
X
STM32F051x
USART2
X
X
X
X
X
X