MSP430F673X Datasheet, PDF (57/121 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

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MSP430F673x
MSP430F672x
SLAS731A – DECEMBER 2011 – REVISED APRIL 2012
DCO Frequency
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
f_DCO(0,0)
f_DCO(0,31)
f_DCO(1,0)
f_DCO(1,31)
f_DCO(2,0)
f_DCO(2,31)
f_DCO(3,0)
f_DCO(3,31)
f_DCO(4,0)
f_DCO(4,31)
f_DCO(5,0)
f_DCO(5,31)
f_DCO(6,0)
f_DCO(6,31)
f_DCO(7,0)
f_DCO(7,31)
S_DCORSEL
DCO frequency (0, 0)
DCO frequency (0, 31)
DCO frequency (1, 0)
DCO frequency (1, 31)
DCO frequency (2, 0)
DCO frequency (2, 31)
DCO frequency (3, 0)
DCO frequency (3, 31)
DCO frequency (4, 0)
DCO frequency (4, 31)
DCO frequency (5, 0)
DCO frequency (5, 31)
DCO frequency (6, 0)
DCO frequency (6, 31)
DCO frequency (7, 0)
DCO frequency (7, 31)
Frequency step between range
DCORSEL and DCORSEL + 1
DCORSELx = 0, DCOx = 0, MODx = 0
DCORSELx = 0, DCOx = 31, MODx = 0
DCORSELx = 1, DCOx = 0, MODx = 0
DCORSELx = 1, DCOx = 31, MODx = 0
DCORSELx = 2, DCOx = 0, MODx = 0
DCORSELx = 2, DCOx = 31, MODx = 0
DCORSELx = 3, DCOx = 0, MODx = 0
DCORSELx = 3, DCOx = 31, MODx = 0
DCORSELx = 4, DCOx = 0, MODx = 0
DCORSELx = 4, DCOx = 31, MODx = 0
DCORSELx = 5, DCOx = 0, MODx = 0
DCORSELx = 5, DCOx = 31, MODx = 0
DCORSELx = 6, DCOx = 0, MODx = 0
DCORSELx = 6, DCOx = 31, MODx = 0
DCORSELx = 7, DCOx = 0, MODx = 0
DCORSELx = 7, DCOx = 31, MODx = 0
S_RSEL = f_{DCO(DCORSEL+1,DCO)}/f_{DCO(DCORSEL,DCO)}
0.07
0.70
0.15
1.47
0.32
3.17
0.64
6.07
1.3
12.3
2.5
23.7
4.6
39.0
8.5
60
1.2
S_DCO
Frequency step between tap
DCO and DCO + 1
S_DCO = f_{DCO(DCORSEL,DCO+1)}/f_{DCO(DCORSEL,DCO)}
1.02
Duty cycle
Measured at SMCLK
40
50
df_DCO/dT
DCO frequency temperature drift f_DCO = 1 MHz
0.1
df_DCO/dV_CORE DCO frequency voltage drift
f_DCO = 1 MHz
1.9
MAX
0.20
1.70
0.36
3.45
0.75
7.38
1.51
14.0
3.2
28.2
6.0
54.1
10.7
88.0
19.6
135
UNIT
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
2.3 ratio
1.12 ratio
60 %
%/°C
%/V
Typical DCO Frequency, V_CC = 3.0 V, T_A = 25°C
100
10
DCOx = 31
1
DCOx = 0
0.1
0
1
2
3
4
5
6
7
DCORSEL
Figure 10. Typical DCO Frequency
Copyright © 2011–2012, Texas Instruments Incorporated
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