Panasonic MN101C77C - Manual (Page 490)

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