HD404339 Datasheet, PDF (65/78 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer with large-capacity memory

1. When not using an A/D converter.
V_CC
0.1 µF
GND
HD404339 Series
AV_CC
AN₀
AN₁
to
AN₁₁
AV_SS
2. When using pins AN₀ and AN₁ but not using AN₂ to AN₁₁.
V_CC
GND
0.1 µF × 3
AV_CC
AN₀
AN₁
AN₂ to
AN₁₁
AV_SS
3. When using all analog pins.
V_CC
AV_CC
AN ₀
AN ₁
AN ₂ to
AN ₁₁
GND
0.1 µF × 13
AV_SS
Figure 54 Example of Connections (AV_CC to AV_SS)
Between the V_CC and GND lines, connect capacitors designed for use in ordinary power supply circuits.
An example connection is described in figure 54.
No resistors can be inserted in series in the power supply circuit, so the capacitors should be connected in
parallel. The capacitors are a large capacitance C₁ and a small capacitance C₂.
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