MSP430F5529 datasheet(59/115 Pages) TI

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Typical DCO Frequency, V

= 3.0 V, T = 25°C

DCORSEL

100

0.1

DCOx = 31

DCOx = 0

MSP430F551x

MSP430F552x

www.ti.com

SLAS590D – OCTOBER 2009 – REVISED APRIL 2010

DCO Frequency

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fDCO(0,0)

DCO frequency (0, 0)

DCORSELx = 0, DCOx = 0, MODx = 0

0.07

0.20

MHz

fDCO(0,31)

DCO frequency (0, 31)

DCORSELx = 0, DCOx = 31, MODx = 0

0.70

1.70

MHz

fDCO(1,0)

DCO frequency (1, 0)

DCORSELx = 1, DCOx = 0, MODx = 0

0.15

0.36

MHz

fDCO(1,31)

DCO frequency (1, 31)

DCORSELx = 1, DCOx = 31, MODx = 0

1.47

3.45

MHz

fDCO(2,0)

DCO frequency (2, 0)

DCORSELx = 2, DCOx = 0, MODx = 0

0.32

0.75

MHz

fDCO(2,31)

DCO frequency (2, 31)

DCORSELx = 2, DCOx = 31, MODx = 0

3.17

7.38

MHz

fDCO(3,0)

DCO frequency (3, 0)

DCORSELx = 3, DCOx = 0, MODx = 0

0.64

1.51

MHz

fDCO(3,31)

DCO frequency (3, 31)

DCORSELx = 3, DCOx = 31, MODx = 0

6.07

14.0

MHz

fDCO(4,0)

DCO frequency (4, 0)

DCORSELx = 4, DCOx = 0, MODx = 0

1.3

3.2

MHz

fDCO(4,31)

DCO frequency (4, 31)

DCORSELx = 4, DCOx = 31, MODx = 0

12.3

28.2

MHz

fDCO(5,0)

DCO frequency (5, 0)

DCORSELx = 5, DCOx = 0, MODx = 0

2.5

6.0

MHz

fDCO(5,31)

DCO frequency (5, 31)

DCORSELx = 5, DCOx = 31, MODx = 0

23.7

54.1

MHz

fDCO(6,0)

DCO frequency (6, 0)

DCORSELx = 6, DCOx = 0, MODx = 0

4.6

10.7

MHz

fDCO(6,31)

DCO frequency (6, 31)

DCORSELx = 6, DCOx = 31, MODx = 0

39.0

88.0

MHz

fDCO(7,0)

DCO frequency (7, 0)

DCORSELx = 7, DCOx = 0, MODx = 0

8.5

19.6

MHz

fDCO(7,31)

DCO frequency (7, 31)

DCORSELx = 7, DCOx = 31, MODx = 0

135

MHz

Frequency step between range

SDCORSEL

SRSEL = fDCO(DCORSEL+1,DCO)/fDCO(DCORSEL,DCO)

1.2

2.3

ratio

DCORSEL and DCORSEL + 1

Frequency step between tap

SDCO

SDCO = fDCO(DCORSEL,DCO+1)/fDCO(DCORSEL,DCO)

1.02

1.12

ratio

DCO and DCO + 1

Duty cycle

Measured at SMCLK

dfDCO/dT

DCO frequency temperature drift

fDCO = 1 MHz,

0.1

%/°C

dfDCO/dVCC

DCO frequency voltage drift

fDCO = 1 MHz

1.9

%/V

Figure 10. Typical DCO frequency

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