MSP430F42x
MIXED SIGNAL MICROCONTROLLER
SLAS421A − APRIL 2004 − REVISED JUNE 2007
26
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
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ÎÎÎÎÎÎÎÎÎÎÎÎÎ
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1
27
20
1.11
1.17
DCO Tap
S
n
- Stepsize Ratio between DCO T
aps
Min
Max
1.07
1.06
Figure 12. DCO Tap Step Size
DCO Frequency
Adjusted by Bits
2
9
to 2
5
in SCFI1 {N
{DCO}
}
FN_2=0
FN_3=0
FN_4=0
FN_8=0
FN_2=1
FN_3=0
FN_4=0
FN_8=0
FN_2=x
FN_3=1
FN_4=0
FN_8=0
FN_2=x
FN_3=x
FN_4=1
FN_8=0
FN_2=x
FN_3=x
FN_4=x
FN_8=1
Legend
Tolerance at Tap 27
Tolerance at Tap 2
Overlapping DCO Ranges:
Uninterrupted Frequency Range
f
(DCO)
Figure 13. Five Overlapping DCO Ranges Controlled by FN_x Bits
