Datasheet

T
A
− °CV
CC
− V
f
(DCO)
f
(DCO20 C)
f
(DCO)
f
(DCO3V)
1.8 3.02.4 3.6
1.0
20 6040 85
1.0
0−20−400
MSP430FW42x
www.ti.com SLAS383D –OCTOBER 2003–REVISED JANUARY 2011
DCO
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
N
(DCO)
= 01Eh, FN_8 = FN_4 = FN_3 = FN_2 = 0, D = 2;
f
(DCOCLK)
2.2 V/3 V 1 MHz
DCOPLUS = 0, f
Crystal
= 32.768 kHz
2.2 V 0.3 0.65 1.25
f
(DCO = 2)
FN_8 = FN_4 = FN_3 = FN_2 = 0; DCOPLUS = 1 MHz
3 V 0.3 0.7 1.3
2.2 V 2.5 5.6 10.5
f
(DCO = 27)
FN_8 = FN_4 = FN_3 = FN_2 = 0; DCOPLUS = 1 MHz
3 V 2.7 6.1 11.3
2.2 V 0.7 1.3 2.3
f
(DCO = 2)
FN_8 = FN_4 = FN_3 = FN_2 = 1; DCOPLUS = 1 MHz
3 V 0.8 1.5 2.5
2.2 V 5.7 10.8 18
f
(DCO = 27)
FN_8 = FN_4 = FN_3 = FN_2 = 1; DCOPLUS = 1 MHz
3 V 6.5 12.1 20
2.2 V 1.2 2 3
f
(DCO = 2)
FN_8 = FN_4 = 0, FN_3 = 1, FN_2 = x; ; DCOPLUS = 1 MHz
3 V 1.3 2.2 3.5
2.2 V 9 15.5 25
f
(DCO = 27)
FN_8 = FN_4 = 0, FN_3 = 1, FN_2 = x; ; DCOPLUS = 1 MHz
3 V 10.3 17.9 28.5
2.2 V 1.8 2.8 4.2
f
(DCO = 2)
FN_8 = 0, FN_4 = 1, FN_3 = FN_2 = x; ; DCOPLUS = 1 MHz
3 V 2.1 3.4 5.2
2.2 V 13.5 21.5 33
f
(DCO = 27)
FN_8 = 0, FN_4 = 1, FN_3 = FN_2 = x; ; DCOPLUS = 1 MHz
3 V 16 26.6 41
2.2 V 2.8 4.2 6.2
f
(DCO = 2)
FN_8 = 1, FN_4 = 1 = FN_3 = FN_2 = x; ; DCOPLUS = 1 MHz
3 V 4.2 6.3 9.2
2.2 V 21 32 46
f
(DCO = 27)
FN_8 = 1, FN_4 = 1 = FN_3 = FN_2 = x; ; DCOPLUS = 1 MHz
3 V 30 46 70
1 < TAP ≤ 20 1.06 1.11
Step size between adjacent DCO taps:
S
n
S
n
= f
DCO(Tap n+1)
/f
DCO(Tap n)
(see Figure 16 for taps 21 to 27)
TAP = 27 1.07 1.17
Temperature drift, N
(DCO)
= 01Eh, FN_8 = FN_4 = FN_3 = 2.2 V -0.2 -0.3 -0.4
D
t
FN_2 = 0 %/°C
3 V -0.2 -0.3 -0.4
D = 2; DCOPLUS = 0
Drift with V
CC
variation, N
(DCO)
= 01Eh, FN_8 = FN_4 = FN_3
D
V
= FN_2 = 0 2.2 V/3 V 0 5 15 %/V
D = 2; DCOPLUS = 0
Figure 15. DCO Frequency vs Supply Voltage V
CC
and vs Ambient Temperature
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