PIC18LF4420T-I/SO 查看數據表（PDF） - Microchip Technology

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PIC18LF4420T-I/SO

28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2420/2520/4420/4520

TABLE 18-3: BAUD RATES FOR ASYNCHRONOUS MODES

BAUD

RATE

(K)

SYNC = 0, BRGH = 0, BRG16 = 0

FOSC = 40.000 MHz

FOSC = 20.000 MHz

FOSC = 10.000 MHz

FOSC = 8.000 MHz

Actual

Rate

(K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG

value

(decimal)

0.3

—

—

—

—

—

—

—

—

—

—

—

—

1.2

—

—

—

1.221 1.73

255 1.202 0.16

129

1201 -0.16

103

2.4 2.441 1.73

255 2.404 0.16

129 2.404 0.16

64

2403 -0.16

51

9.6 9.615 0.16

64

9.766 1.73

31

9.766 1.73

15

9615 -0.16

12

19.2 19.531 1.73

31 19.531 1.73

15 19.531 1.73

7

—

—

—

57.6 56.818 -1.36

10 62.500 8.51

4

52.083 -9.58

2

—

—

—

115.2 125.000 8.51

4 104.167 -9.58

2

78.125 -32.18

1

—

—

—

BAUD

RATE

(K)

0.3

1.2

2.4

9.6

19.2

57.6

115.2

SYNC = 0, BRGH = 0, BRG16 = 0

FOSC = 4.000 MHz

Actual

Rate

(K)

%

Error

SPBRG

value

(decimal)

FOSC = 2.000 MHz

Actual

Rate

(K)

%

Error

SPBRG

value

(decimal)

FOSC = 1.000 MHz

Actual

Rate

(K)

%

Error

SPBRG

value

(decimal)

0.300 0.16

207

300

-0.16

103

300 -0.16

51

1.202 0.16

51

1201 -0.16

25

1201 -0.16

12

2.404 0.16

25

2403 -0.16

12

—

—

—

8.929 -6.99

6

—

—

—

—

—

—

20.833 8.51

2

—

—

—

—

—

—

62.500 8.51

0

—

—

—

—

—

—

62.500 -45.75

0

—

—

—

—

—

—

BAUD

RATE

(K)

SYNC = 0, BRGH = 1, BRG16 = 0

FOSC = 40.000 MHz

FOSC = 20.000 MHz

FOSC = 10.000 MHz

FOSC = 8.000 MHz

Actual

Rate

(K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG

value

(decimal)

0.3

—

—

—

—

—

—

—

—

—

—

—

—

1.2

—

—

—

—

—

—

—

—

—

—

—

—

2.4

—

—

—

—

—

—

2.441 1.73

255

2403 -0.16

207

9.6 9.766 1.73

255 9.615 0.16

129 9.615 0.16

64

9615 -0.16

51

19.2 19.231 0.16

129 19.231 0.16

64 19.531 1.73

31

19230 -0.16

25

57.6 58.140 0.94

42 56.818 -1.36

21 56.818 -1.36

10

55555 3.55

8

115.2 113.636 -1.36

21 113.636 -1.36

10 125.000 8.51

4

—

—

—

BAUD

RATE

(K)

SYNC = 0, BRGH = 1, BRG16 = 0

FOSC = 4.000 MHz

FOSC = 2.000 MHz

FOSC = 1.000 MHz

Actual

Rate

(K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG Actual

value Rate

(decimal) (K)

%

Error

SPBRG

value

(decimal)

0.3

—

—

—

—

—

—

300

-0.16

207

1.2 1.202 0.16

207

1201 -0.16

103

1201 -0.16

51

2.4 2.404 0.16

103

2403 -0.16

51

2403 -0.16

25

9.6 9.615 0.16

25

9615 -0.16

12

—

—

—

19.2 19.231 0.16

12

—

—

—

—

—

—

57.6 62.500 8.51

3

—

—

—

—

—

—

115.2 125.000 8.51

1

—

—

—

—

—

—

 2004 Microchip Technology Inc.

Preliminary

DS39631A-page 207

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