NUTINY-SDK-100 Nuvoton Technology Corporation of America, NUTINY-SDK-100 Datasheet - Page 45
NUTINY-SDK-100
Manufacturer Part Number
NUTINY-SDK-100
Description
BOARD EVALUATION NUC100 SERIES
Manufacturer
Nuvoton Technology Corporation of America
Series
NuMicro™r
Type
MCUr
Specifications of NUTINY-SDK-100
Contents
Board, Cable
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
NUC100 Series
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5.3.6
This device is equipped a power-of-2 frequency divider which is composed by16 chained divide-
by-2 shift registers. One of the 16 shift register outputs selected by a sixteen to one multiplexer is
reflected to CLKO function pin. Therefore there are 16 options of power-of-2 divided clocks with
the frequency from F
The output formula is F
divider output frequency and N is the 4-bit value in FSEL (FRQDIV[3:0]).
When write 1 to DIVIDER_EN (FRQDIV[4]), the chained counter starts to count. When write 0 to
DIVIDER_EN (FRQDIV[4]), the chained counter continuously runs till divided clock reaches low
state and stay in low state.
Frequency Divider Output
in
/2
Figure 5-8 Block Diagram of Frequency Divider
Figure 5-7 Clock Source of Frequency Divider
1
out
to F
= F
in
/2
in
16
/2
where Fin is input clock frequency to the clock divider.
(N+1)
, where F
- 45 -
NuMicro™ NUC100 Data Sheet
in
is the input clock frequency, F
Publication Release Date: Nov 11, 2010
Revision V2.00
out
is the clock
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