3-3 cautions, Xv - 16 – Panasonic MN101C77C User Manual

Page 490

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Chapter 15 A/D Converter

Operation

XV - 16

15-3-3

Cautions

A/D conversion can be damaged by noise easily, therefore, anti-noise measures should be taken ad-

equately .

„

Anti-noise measures

To A/D input (analog input pin), add condenser near the V

SS

pins of micro controller.

Figure 15-3-2 A/D Converter Recommended Example 1

Figure 15-3-3 A/D Converter Recommended Example 2

V

DD

Digital V

DD

Analog V

DD

Power supply

Digital V

SS

Analog V

SS

Set near the V

SS

pin

V

SS

V

REF+

V

REF-

AN0

to

AN6

V

DD

V

DD

V

SS

Power supply

Set near the V

SS

pin.

V

SS

V

REF+

V

REF-

AN0

to

AN6

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