RM0312 datasheet(241/275 Pages) STMICROELECTRONICS

241 / 275 page

DocID022352 Rev 3

241/275

RM0312

Universal synchronous/asynchronous receiver transmitter (USART)

249

Figure 91. USART data clock timing diagram (M=0)

Figure 92. USART data clock timing diagram (M=1)

Figure 93. RX data setup/hold time

M=0 (8 data bits)

Clock (CPOL=0, CPHA=1)

Clock (CPOL=1, CPHA=0)

Clock (CPOL=1, CPHA=1)

Start

LSB

MSB Stop

* LBCL bit controls last data clock pulse

Start

Idle or preceding

transmission

Data

Stop

Clock (CPOL=0, CPHA=0)

Idle or next

transmission

Idle or next

M=1 (9 data bits)

Clock (CPOL=0, CPHA=1)

Clock (CPOL=1, CPHA=0)

Clock (CPOL=1, CPHA=1)

Start

LSB

MSB Stop

* LBCL bit controls last data clock pulse

Start

Idle or preceding

transmission

Data

Stop

Clock (CPOL=0, CPHA=0)

transmission

valid DATA bit

tSETUP

tHOLD

USART_CK (capture strobe on USART_CK

rising edge in this example)

Data on USART_RX

(from slave)

tSETUP = tHOLD 1/16 bit time = 1/16*fUSART_CK

RM0312 데이터시트(PDF) 241 Page - STMicroelectronics

RM0312 데이터시트(HTML) 241 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL