PIC17C42AT View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC17C42AT

High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

Microchip Technology 

PIC17C4X

TABLE 13-3: BAUD RATES FOR SYNCHRONOUS MODE

FOSC = 33 MHz

BAUD

RATE

(K) KBAUD %ERROR

FOSC = 25 MHz

SPBRG

value

(decimal) KBAUD %ERROR

FOSC = 20 MHz

SPBRG

value

(decimal) KBAUD %ERROR

FOSC = 16 MHz

SPBRG

value

(decimal) KBAUD %ERROR

SPBRG

value

(decimal)

0.3

NA

—

—

NA

—

—

NA

—

—

NA

—

—

1.2

NA

—

—

NA

—

—

NA

—

—

NA

—

—

2.4

NA

—

—

NA

—

—

NA

—

—

NA

—

—

9.6

NA

—

—

NA

—

—

NA

—

—

NA

—

—

19.2 NA

—

—

NA

—

—

19.53

+1.73

255

19.23

+0.16

207

76.8 77.10

+0.39

106

77.16

+0.47

80

76.92

+0.16

64

76.92

+0.16

51

96 95.93

-0.07

85

96.15

+0.16

64

96.15

+0.16

51

95.24

-0.79

41

300 294.64

-1.79

27

297.62 -0.79

20

294.1

-1.96

16

307.69 +2.56

12

500 485.29

-2.94

16

480.77 -3.85

12

500

0

9

500

0

7

HIGH 8250

—

0

6250

—

0

5000

—

0

4000

—

0

LOW 32.22

—

255

24.41

—

255

19.53

—

255

15.625

—

255

BAUD

RATE

(K)

0.3

1.2

2.4

9.6

19.2

76.8

96

300

500

HIGH

LOW

BAUD

RATE

(K)

0.3

1.2

2.4

9.6

19.2

76.8

96

300

500

HIGH

LOW

FOSC = 10 MHz

KBAUD

NA

NA

NA

9.766

19.23

75.76

96.15

312.5

500

2500

9.766

%ERROR

—

—

—

+1.73

+0.16

-1.36

+0.16

+4.17

0

—

—

FOSC = 3.579 MHz

KBAUD

NA

NA

NA

9.622

19.04

74.57

99.43

298.3

NA

894.9

3.496

%ERROR

—

—

—

+0.23

-0.83

-2.90

_3.57

-0.57

—

—

—

SPBRG

value

(decimal)

—

—

—

255

129

32

25

7

4

0

255

FOSC = 7.159 MHz

KBAUD

NA

NA

NA

9.622

19.24

77.82

94.20

298.3

NA

1789.8

6.991

%ERROR

—

—

—

+0.23

+0.23

+1.32

-1.88

-0.57

—

—

—

SPBRG

value

(decimal)

—

—

—

92

46

11

8

2

—

0

255

FOSC = 1 MHz

KBAUD

NA

1.202

2.404

9.615

19.24

83.34

NA

NA

NA

250

0.976

%ERROR

—

+0.16

+0.16

+0.16

+0.16

+8.51

—

—

—

—

—

SPBRG

value

(decimal)

—

—

—

185

92

22

18

5

—

0

255

FOSC = 5.068 MHz

KBAUD

NA

NA

NA

9.6

19.2

79.2

97.48

316.8

NA

1267

4.950

%ERROR

—

—

—

0

0

+3.13

+1.54

+5.60

—

—

—

SPBRG

value

(decimal)

—

207

103

25

12

2

—

—

—

0

255

FOSC = 32.768 kHz

KBAUD

0.303

1.170

NA

NA

NA

NA

NA

NA

NA

8.192

0.032

%ERROR

+1.14

-2.48

—

—

—

—

—

—

—

—

—

SPBRG

value

(decimal)

—

—

—

131

65

15

12

3

—

0

255

SPBRG

value

(decimal)

26

6

—

—

—

—

—

—

—

0

255

© 1996 Microchip Technology Inc.

DS30412C-page 87

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