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7643 Datasheet(PDF) 291 Page - Renesas Technology Corp

Part # 7643
Description  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  424 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7643 Datasheet(HTML) 291 Page - Renesas Technology Corp

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Rev.2.00
Aug 28, 2006
page 170 of 202
7643 Group
REJ09B0133-0200
APPLICATION
2.7 PLL
Fig. 2.7.6 Structure of Frequency synthesizer divide register
Frequency synthesizer divide register
b7 b6 b5 b4 b3 b2 b1 b0
Frequency synthesizer divide register
(FSD: address 6F16)
b
0
1
Functions
At reset R W
1
1
2
1
3
1
4
1
5
1
6
1
7
1
qfSYN clock is generated by dividing fVCO clock by the contents of this
register:
fSYN = fVCO / {2(m +1)}, m: value set to FSD



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