beautypg.com

Freescale Semiconductor MC68HC908MR32 User Manual

Page 179

background image

I/O Registers

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

Freescale Semiconductor

179

Table 13-7. SCI Baud Rate Selection Examples

SCP1:SCP0

Prescaler

Divisor (PD)

SCR2:SCR1:SCR0

Baud Rate

Divisor (BD)

Baud Rate

(f

OP

= 7.3728 MHz)

Baud Rate

(f

OP

= 4.9152 MHz)

00

1

000

1

115,200

76,800

00

1

001

2

57,600

38,400

00

1

010

4

28,800

19,200

00

1

011

8

14,400

9600

00

1

100

16

7200

4800

00

1

101

32

3600

2400

00

1

110

64

1800

1200

00

1

111

128

900

600

01

3

000

1

38,400

25,600

01

3

001

2

19,200

12,800

01

3

010

4

9600

6400

01

3

011

8

4800

3200

01

3

100

16

2400

1600

01

3

101

32

1200

800

01

3

110

64

600

400

01

3

111

128

300

200

10

4

000

1

28,800

19,200

10

4

001

2

14,400

9600

10

4

010

4

7200

4800

10

4

011

8

3600

2400

10

4

100

16

1800

1200

10

4

101

32

900

600

10

4

110

64

450

300

10

4

111

128

225

150

11

13

000

1

8861.5

5907.7

11

13

001

2

4430.7

2953.8

11

13

010

4

2215.4

1476.9

11

13

011

8

1107.7

738.5

11

13

100

16

553.8

369.2

11

13

101

32

276.9

184.6

11

13

110

64

138.5

92.3

11

13

111

128

69.2

46.2

This manual is related to the following products: