MSP430FG42X0 Datasheet, PDF (26/65 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430FG42x0
MIXED SIGNAL MICROCONTROLLER
SLAS556A − JULY 2007 − REVISED AUGUST 2007
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted)
DCO
PARAMETER
TEST CONDITIONS
f_(DCOCLK)
N_(DCO)=01Eh, FN_8=FN_4=FN_3=FN_2=0, D = 2, DCOPLUS= 0,
f_Crystal = 32.768 kHz
f_(DCO=2)
FN_8 = FN_4 = FN_3 = FN_2 = 0, DCOPLUS = 1
f_(DCO=27)
FN_8 = FN_4 = FN_3 = FN_2 = 0, DCOPLUS = 1
f_(DCO=2)
FN_8 = FN_4 = FN_3 = 0, FN_2 = 1, DCOPLUS = 1
f_(DCO=27)
FN_8 = FN_4 = FN_3 = 0, FN_2 = 1, DCOPLUS = 1
f_(DCO=2)
FN_8 = FN_4 = 0, FN_3 = 1, FN_2 = x, DCOPLUS = 1
f_(DCO=27)
FN_8 = FN_4 = 0, FN_3 = 1, FN_2 = x, DCOPLUS = 1
f_(DCO=2)
FN_8 = 0, FN_4 = 1, FN_3 = FN_2 = x, DCOPLUS = 1
f_(DCO=27)
FN_8 = 0, FN_4 = 1, FN_3 = FN_2 = x, DCOPLUS = 1
f_(DCO=2)
FN_8 = 1, FN_4 = FN_3 = FN_2 = x, DCOPLUS = 1
f_(DCO=27)
S_n
D_t
D_V
FN_8= 1, FN_4 = FN_3 = FN_2 = x, DCOPLUS = 1
Step size between adjacent DCO taps:
S_n = f_{DCO(Tap n+1)} / f_{DCO(Tap n)} (see Figure 10 for taps 21 to 27)
Temperature drift, N_(DCO) = 01Eh, FN_8 = FN_4 = FN_3 = FN_2 = 0,
D = 2, DCOPLUS = 0 (see Note 2)
Drift with V_CC variation, N_(DCO) = 01Eh,
FN_8 = FN_4 = FN_3 = FN_2 = 0, D = 2, DCOPLUS = 0
V_CC
MIN TYP MAX UNIT
2.2 V/3 V
1
MHz
2.2 V
3V
0.3 0.65 1.25
MHz
0.3 0.7 1.3
2.2 V 2.5 5.6 10.5
MHz
3 V 2.7 6.1 11.3
2.2 V 0.7 1.3 2.3
MHz
3 V 0.8 1.5 2.5
2.2 V
3V
5.7 10.8
6.5 12.1
18
MHz
20
2.2 V 1.2
2
3
MHz
3 V 1.3 2.2 3.5
2.2 V
9 15.5
25
MHz
3 V 10.3 17.9 28.5
2.2 V 1.8 2.8 4.2
MHz
3 V 2.1 3.4 5.2
2.2 V 13.5 21.5
3V
16 26.6
33
MHz
41
2.2 V 2.8 4.2 6.2
MHz
3 V 4.2 6.3 9.2
2.2 V
21
32
46
MHz
3V
30
46
70
1 < TAP ≤ 20 1.06
1.11
TAP = 27 1.07
1.17
2.2 V –0.2 –0.3 –0.4
3 V –0.2 –0.3 –0.4 ^%/_C
0
5
15 %/V
f(DCO)
f(DCO3V)
f(DCO)
f(DCO20_5C)
1.0
1.0
0 1.8
2.4
3.0
3.6
V_CC − V
−40 −20
0
20
40
60
Figure 9. DCO Frequency vs Supply Voltage V_CC and vs Ambient Temperature
85
T_A − °C
26
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