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| HD404449 Datasheet, PDF (101/123 Pages) Hitachi Semiconductor – HD404449 SERIES | |||
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HD404449 Series
Notes on Mounting
Assemble all parts including the HD404449 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.
⢠When not using an A/D converter
VCC
GND
0.1 µF
AVCC
AN0
AN1
AN2
AN3
AVSS
⢠When using pins AN0 and AN1 but not using AN2 and AN3
VCC
GND
0.1 µF à 3
AVCC
AN0
AN1
AN2
AN3
AVSS
⢠When using all analog pins
VCC
AVCC
AN 0
AN 1
AN 2
AN 3
GND
0.1 µF à 5
AVSS
Figure 87 Example of Connections (1)
101
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