PIC16F870-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F870-I/SO

28/40-Pin, 8-Bit CMOS FLASH Microcontrollers

Microchip Technology 

PIC16F870/871

TABLE 9-3: BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 0)

BAUD

RATE

(K)

FOSC = 20 MHz

KBAUD

%

ERROR

SPBRG

value

(decimal)

FOSC = 16 MHz

KBAUD

%

ERROR

SPBRG

value

(decimal)

FOSC = 10 MHz

KBAUD

%

ERROR

SPBRG

value

(decimal)

0.3

-

-

-

-

-

-

-

-

-

1.2 1.221

1.75

255

1.202

0.17

207

1.202

0.17

129

2.4 2.404

0.17

129

2.404

0.17

103

2.404

0.17

64

9.6 9.766

1.73

31

9.615

0.16

25

9.766

1.73

15

19.2 19.531

1.72

15

19.231 0.16

12

19.531 1.72

7

28.8 31.250 8.51

9

27.778 3.55

8

31.250 8.51

4

33.6 34.722 3.34

8

35.714 6.29

6

31.250 6.99

4

57.6 62.500 8.51

4

62.500 8.51

3

52.083 9.58

2

HIGH 1.221

-

255

0.977

-

255

0.610

-

255

LOW 312.500

-

0

250.000

-

0

156.250

-

0

BAUD

RATE

(K)

FOSC = 4 MHz

KBAUD

%

ERROR

SPBRG

value

(decimal)

FOSC = 3.6864 MHz

KBAUD

%

ERROR

SPBRG

value

(decimal)

0.3 0.300

1.2 1.202

2.4 2.404

9.6 8.929

19.2 20.833

28.8 31.250

33.6

-

57.6 62.500

HIGH 0.244

LOW 62.500

-

TABLE 9-4:

0

207

0.301

0.33

185

0.17

51

1.216

1.33

46

0.17

25

2.432

1.33

22

6.99

6

9.322

2.90

5

8.51

2

18.643 2.90

2

8.51

1

-

-

-

-

-

-

-

-

8.51

0

55.930 2.90

0

-

255

0.218

-

255

-

0

55.930

-

0

BAUD RATES FOR ASYNCHRONOUS MODE (BRGH = 1)

BAUD

RATE

(K)

0.3

1.2

2.4

9.6

19.2

28.8

33.6

57.6

HIGH

LOW

FOSC = 20 MHz

FOSC = 16 MHz

KBAUD

-

-

-

9.615

19.231

29.070

33.784

59.524

4.883

1250.000

%

ERROR

-

-

-

0.16

0.16

0.94

0.55

3.34

-

-

SPBRG

value

(decimal)

KBAUD

-

-

-

-

-

-

129

9.615

64

19.231

42

29.412

36

33.333

20

58.824

255

3.906

0

1000.000

%

ERROR

-

-

-

0.16

0.16

2.13

0.79

2.13

-

SPBRG

value

(decimal)

-

-

-

103

51

33

29

16

255

0

FOSC = 10 MHz

KBAUD

-

-

2.441

9.615

19.531

28.409

32.895

56.818

2.441

625.000

%

ERROR

-

-

1.71

0.16

1.72

1.36

2.10

1.36

-

-

SPBRG

value

(decimal)

-

-

255

64

31

21

18

10

255

0

BAUD

RATE

(K)

0.3

1.2

2.4

9.6

19.2

28.8

33.6

57.6

HIGH

LOW

FOSC = 4 MHz

KBAUD

-

1.202

2.404

9.615

19.231

27.798

35.714

62.500

0.977

250.000

%

ERROR

-

0.17

0.17

0.16

0.16

3.55

6.29

8.51

-

-

SPBRG

value

(decimal)

-

207

103

25

12

8

6

3

255

0

FOSC = 3.6864 MHz

KBAUD

-

1.203

2.406

9.727

18.643

27.965

31.960

55.930

0.874

273.722

%

ERROR

-

0.25

0.25

1.32

2.90

2.90

4.88

2.90

-

-

SPBRG

value

(decimal)

-

185

92

22

11

7

6

3

255

0

DS30569A-page 66

Preliminary

© 1999 Microchip Technology Inc.

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