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7906 Datasheet(PDF) 504 Page - Renesas Technology Corp

Part # 7906
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  531 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7906 Datasheet(HTML) 504 Page - Renesas Technology Corp

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APPENDIX
Appendix 7. Countermeasure against noise
7906 Group User’s Manual Rev.2.0
20-99
(2)
Processing for analog power source pins, etc.
q Use independent power sources for the Vcc, AVcc and VREF pins.
q Insert capacitors between the AVcc and AVss pins, and between the VREF and AVss pins.
Reasons: Prevents the A-D converter and D-A converter from noise on the Vcc line.
Fig. 7 Processing for analog power source pins, etc.
AVcc
AVss
M37906
Reference values
C1
≥ 0.47 µF
C2
≥ 0.47 µF
Note : Connect capacitors using the
thickest, shortest wiring possible.
VREF
ANi
C1
C2
(sensor, etc.)



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