Rainbow Electronics ATmega64M1 User Manual
Page 198
198
8209A–AVR–08/09
ATmega16M1/32M1/64M1
Table 20-2.
Examples of CAN Baud Rate Settings for Commonly Frequencies
f
CLK
IO
(MHz)
CAN
Rate
(Kbps)
Description
Segments
Registers
Sampling
Point
TQ
(µs)
Tbit
(TQ)
Tprs
(TQ)
Tph1
(TQ)
Tph2
(TQ)
Tsjw
(TQ)
CANBT1
CANBT2
CANBT3
16.000
1000
69 %
0.0625
16
7
4
4
1
0x00
0x0C
0x36
75 %
0.125
8
3
2
2
1
0x02
0x04
0x13
500
75 %
0.125
16
7
4
4
1
0x02
0x0C
0x37
0.250
8
3
2
2
1
0x06
0x04
0x13
250
75 %
0.250
16
7
4
4
1
0x06
0x0C
0x37
0.500
8
3
2
2
1
0x0E
0x04
0x13
200
75 %
0.3125
16
7
4
4
1
0x08
0x0C
0x37
0.625
8
3
2
2
1
0x12
0x04
0x13
125
75 %
0.500
16
7
4
4
1
0x0E
0x0C
0x37
1.000
8
3
2
2
1
0x1E
0x04
0x13
100
75 %
0.625
16
7
4
4
1
0x12
0x0C
0x37
1.250
8
3
2
2
1
0x26
0x04
0x13
12.000
1000
67 %
0.083333
12
5
3
3
1
0x00
0x08
x
- - - n o d a t a - - -
500
75 %
0.166666
12
5
3
3
1
0x02
0x08
0x25
0.250
8
3
2
2
1
0x04
0x04
0x13
250
75 %
0.250
16
7
4
4
1
0x04
0x0C
0x37
0.500
8
3
2
2
1
0x0A
0x04
0x13
200
75 %
0.250
20
8
6
5
1
0x04
0x0E
0x4B
0.416666
12
5
3
3
1
0x08
0x08
0x25
125
75 %
0.500
16
7
4
4
1
0x0A
0x0C
0x37
1.000
8
3
2
2
1
0x16
0x04
0x13
100
75 %
0.500
20
8
6
5
1
0x0A
0x0E
0x4B
0.833333
12
5
3
3
1
0x12
0x08
0x25