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FS970X Datasheet(PDF) 14 Page - Fortune Semiconductor Corp.

No. de pieza FS970X
Descripción Electrónicos  5,000/50,000 counts DMM analog front end.
PDF  46 Pages
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Fabricante Electrónico  FORTUNE [Fortune Semiconductor Corp.]
Página de inicio  https://www.ic-fortune.com/eng/index.asp
Logo FORTUNE - Fortune Semiconductor Corp.

FS970X Datasheet(HTML) 14 Page - Fortune Semiconductor Corp.

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FS970X
Rev. 4.4
14/46
9.
Clock and Buzzer Generator
Clock Generator
4.0000 MHz
FS
FS
F
TB
1/FS
1/FTB
ENOSCO_
ENXTL_
FTB
TBDIV
FSDIV
Buzzer
VBAT
ENBP
CNTBP
FBP
CLK
DIVIDER
OSCO
2
XTALI
3
XTALO
4
BZR
58
OSCO
Graph 4 Clock Generator.
Clock generator is shown in Graph 4. It can be connected to a 4.000 MHz crystal oscillator to produce 4.000
MHz clock frequency. It can then be divided to FS, FTB, and FBP frequencies by a divider. Among these, FS is
used by ADC. (please refer to 8.4 for details.) FTB is used by digital circuits, such as the reference frequency of
frequency counter (please refer to section 9.1). FBP is used by buzzer to initiate buzzing.
FTB and FS are respectively controlled by ENXTAL_. TBDIV and FSDIV. The true value Chart is shown in
Chart 3:
ENXTAL_ TBDIV
FTB
FSDIV
FS
L
L
1.0000 MHz
L
166.67 kHz
L
L
1.0000 MHz
H
83.33 kHz
L
H
125.0 kHz
L
166.67 kHz
L
H
125.0 kHz
H
83.33 kHz
H
X
0, (L)
X
0, (L)
Chart 3. FTB / FS generator true value Chart.



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