Datasheet

MSP430F42x0
MIXED SIGNAL MICROCONTROLLER
SLAS455D − MARCH 2005 − REVISED APRIL 2007
25
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted)
DCO
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
f
(DCOCLK)
N
(DCO)
=01Eh, FN_8=FN_4=FN_3=FN_2=0, D = 2; DCOPLUS= 0,
f
Crystal
= 32.768 kHz
2.2 V/3 V 1 MHz
f
FN 8 FN 4 FN 3 FN 2 0 ; DCOPLUS 1
2.2 V 0.3 0.65 1.25
MHz
f
(DCO=2)
FN_8=FN_4=FN_3=FN_2=0 ; DCOPLUS = 1
3 V 0.3 0.7 1.3
MHz
f
FN 8 FN 4 FN 3 FN 2 0; DCOPLUS 1
2.2 V 2.5 5.6 10.5
MHz
f
(DCO=27)
FN_8=FN_4=FN_3=FN_2=0; DCOPLUS = 1
3 V 2.7 6.1 11.3
MHz
f
FN 8 FN 4 FN 3 0 FN 2 1; DCOPLUS 1
2.2 V 0.7 1.3 2.3
MHz
f
(DCO=2)
FN_8=FN_4=FN_3=0, FN_2=1; DCOPLUS = 1
3 V 0.8 1.5 2.5
MHz
f
FN 8 FN 4 FN 3 0 FN 2 1; DCOPLUS 1
2.2 V 5.7 10.8 18
MHz
f
(DCO=27)
FN_8=FN_4=FN_3=0, FN_2=1; DCOPLUS = 1
3 V 6.5 12.1 20
MHz
f
FN 8 FN 4 0 FN 3 1 FN 2 x; DCOPLUS 1
2.2 V 1.2 2 3
MHz
f
(DCO=2)
FN_8=FN_4=0, FN_3= 1, FN_2=x; DCOPLUS = 1
3 V 1.3 2.2 3.5
MHz
f
FN 8 FN 4 0 FN 3 1 FN 2 x; DCOPLUS 1
2.2 V 9 15.5 25
MHz
f
(DCO=27)
FN_8=FN_4=0, FN_3= 1, FN_2=x; DCOPLUS = 1
3 V 10.3 17.9 28.5
MHz
f
FN 8 0 FN 4 1 FN 3 FN 2 x; DCOPLUS 1
2.2 V 1.8 2.8 4.2
MHz
f
(DCO=2)
FN_8=0, FN_4= 1, FN_3= FN_2=x; DCOPLUS = 1
3 V 2.1 3.4 5.2
MHz
f
FN 8 0 FN 4 1 FN 3 FN 2 x; DCOPLUS 1
2.2 V 13.5 21.5 33
MHz
f
(DCO=27)
FN_8=0, FN_4=1, FN_3= FN_2=x; DCOPLUS = 1
3 V 16 26.6 41
MHz
f
FN 8 1 FN 4 FN 3 FN 2 x; DCOPLUS 1
2.2 V 2.8 4.2 6.2
MHz
f
(DCO=2)
FN_8=1, FN_4=FN_3=FN_2=x; DCOPLUS = 1
3 V 4.2 6.3 9.2
MHz
f
FN 8 1 FN 4 FN 3 FN 2 x; DCOPLUS 1
2.2 V 21 32 46
MHz
f
(DCO=27)
FN_8=1,FN_4=FN_3=FN_2=x; DCOPLUS = 1
3 V 30 46 70
MHz
S
Step size between adjacent DCO taps:
1 < TAP ≤ 20 1.06 1.11
S
n
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)
TAP = 27 1.07 1.17
D
Temperature drift, N
(
D
CO)
= 01Eh, FN_8=FN_4=FN_3=FN_2=0
2.2 V –0.2 –0.3 –0.4
%/_C
D
t
Temperature
drift
,
N
(DCO)
=
01Eh
,
FN
_
8=FN
_
4=FN
_
3=FN
_
2=0
D = 2; DCOPLUS = 0, (see Note 2)
3 V –0.2 –0.3 –0.4
%/_C
D
V
Drift with V
CC
variation, N
(DCO)
= 01Eh, FN_8=FN_4=FN_3=FN_2=0
D = 2; DCOPLUS = 0
0 5 15 %/V
T
A
− °CV
CC
− V
f
(DCO)
f
(DCO20
5
C)
f
(DCO)
f
(DCO3V)
1.8 3.02.4 3.6
1.0
20 6040 85
1.0
0−20−400
Figure 9. DCO Frequency vs Supply Voltage V
CC
and vs Ambient Temperature