MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 673

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RM0008
3
4
It is advised that TE and RE are set in the same instruction in order to minimize the setup
and the hold time of the receiver.
The USART supports master mode only: it cannot receive or send data related to an input
clock (SCLK is always an output).
Figure 248. USART example of synchronous transmission
Figure 249. USART data clock timing diagram (M=0)
Clock (CPOL=0, CPHA=0)
Clock (CPOL=0, CPHA=1)
Clock (CPOL=1, CPHA=0)
Clock (CPOL=1, CPHA=1)
Capture Strobe
Data on RX
(from slave)
Data on TX
(from master)
Idle or preceding
transmission
Universal synchronous asynchronous receiver transmitter (USART)
USART
Start
Start
Doc ID 13902 Rev 9
SCLK
LSB
LSB
RX
0
0
TX
1
1
M=0 (8 data bits)
2
2
Data out
Data in
Clock
Synchronous device
(e.g. slave SPI)
3
3
4
4
5
5
* LBCL bit controls last data clock pulse
6
6
MSB Stop
MSB
*
*
7
7
*
*
*
Stop
Idle or next
transmission
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