RM0319 datasheet(216/368 Pages) STMICROELECTRONICS

216 / 368 page

Controller area network ports (CAN)

RM0319

216/368

Doc ID 022640 Rev 3

In this example, the concatenated bit time parameters are (2-1)3&(7-1)4&(1-1)2&(1-1)6, the

Bit Timing register is programmed to= 0x1600.

Example for Bit Timing at low Baudrate

In this example, the frequency of CAN_CLK is 2 MHz, BRP is 1, the bit rate is 100 KBits/s.

In this example, the concatenated bit time parameters are (4-1)3&(5-1)4&(4-1)2&(2-1)6, the

Bit Timing register is programmed to= 0x34C1.

tSync-Seg

100

1 * tq

bit time

1000

tSync-Seg + tTSeg1 + tTSeg2

tolerance for CAN_CLK

0.39

µs

2 * tCAN_CLK

delay of bus driver

200

delay of receiver circuit

delay of bus line (40m)

220

tProp

1µs

1 * tq

tSJW

4µs

4 * tq

tTSeg1

5µs

tProp + tSJW

tTSeg2

µs

Information Processing Time + 3 * tq

tSync-Seg

1µs

1 * tq

bit time

µs

tSync-Seg + tTSeg1 + tTSeg2

tolerance for CAN_CLK

1.58

min PB1 PB2

()

2x 13xbittime

PB2

–

()

------------------------------------------------------------

0.1

μs

2x 13x1

μs0.2μs

–

()

------------------------------------------------------

min PB1 PB2

()

2x 13xbittime

PB2

–

()

------------------------------------------------------------

μs

2x 13x10

μs4μs

–

()

----------------------------------------------------

RM0319 데이터시트(PDF) 216 Page - STMicroelectronics

RM0319 데이터시트(HTML) 216 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