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| HD404318 Datasheet, PDF (54/66 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer | |||
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HD404318 Series
Notes on Mounting
Assemble all parts including the HD404318 Series on a board, noting the points described below.
1. Connect layered ceramic type capacitors (about 0.1 µF) between AVCC and AVSS, between VCC and
GND, and between used analog pins and AVSS.
2. Connect unused analog pins to AVSS.
1. When not using an A/D converter.
VCC
GND
0.1 µF
AVCC
AN0
AN1
to
AN7
AVSS
2. When using pins AN0 and AN1 but not using AN2 to AN7.
VCC
GND
0.1 µF à 3
AVCC
AN0
AN1
AN2 to
AN7
AVSS
3. When using all analog pins.
VCC
AVCC
AN 0
AN 1
AN 2 to
AN 7
GND
0.1 µF à 9
AVSS
Figure 49 Example of Connections (1)
54
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