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2 POWER SUPPLY
A-12 EPSON S1C33210 PRODUCT PART
2.3 Power Supply for Analog Circuits (AVDD)
The analog power supply pin (AVDD) is provided separately from the VDD and VDD pins in order that the digital
circuits do not affect the analog circuit (A/D converter). The AV
DD pin is used to supply an analog power voltage and
the V
SS pin is used as the analog ground.
Supply the same voltage level as the V
DD to the AVDD pin.
AV
DD = VDD, VSS = GND
Note: Be sure to supply V
DD to the AVDD pin even if the analog circuit is not used.
Noise on the analog power lines decrease the A/D converting precision, so use a stabilized power supply and make
the board pattern with consideration given to that.