M16CSLASH1N datasheet(159/238 Pages) RENESAS

159 / 238 page

Rev.1.00

Oct 20, 2004

page 147 of 222

M16C/1N Group

16. CAN Module

REJ09B0007-0100Z

16.6.2 Baud Rate

Baud rate depends on XIN, the division value of the CAN module system clock, the division value of

the prescaler for baud rate, and the number of Tq of one bit.

Table 16.2 shows the examples of baud rate.

Table 16.2 Examples of Baud Rate

Calculation of Baud Rate

Note 1: fCAN division value = 1, 2, 4, 8, 16

fCAN division value: a value selected in the CCLKR register

Note 2: Division value of prescaler for baud rate = P + 1 (P: 0 to 15)

P: a value selected in the BRP bit of the C0CONR register

2 X fCAN division value (Note 1) X division value of prescaler for baud rate (Note 2) X number of Tq of one bit

XIN

Baud rate

16 MHz

10 MHz

8 MHz

1 Mbps

8Tq (1)

500 kbps

8Tq (2)

10Tq (1)

8Tq (1)

16Tq (1)

125 kbps

8Tq (8)

10Tq (4)

8Tq (4)

16Tq (4)

20Tq (2)

16Tq (2)

83.3 kbps

8Tq (12)

10Tq (6)

8Tq (6)

16Tq (6)

20Tq (3)

16Tq (3)

33.3 kbps

8Tq (30)

10Tq (15)

8Tq (15)

16Tq (15)

Note 1: The number in ( ) indicates a value of fCAN division value multiplied by division value of the prescaler

for baud rate.

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