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Is it OK that AVcc pins and AVss pins are in the release state?

Latest Updated:03/23/2009

Question:

When A/D converter is not used, is it OK that AVcc pins and AVss pins are in the release state?

Answer:

No, it is not OK.

Do not put AVcc pins and AVss pins in the release state even when converter is not used.

When A/D converter is not used, set as follows; AVcc=Vcc, AVss=Vss, AVref=Vcc.

If the product has AVref pins, set as follows; AVref=Vcc.

Suitable Products
SH7124, SH7125
SH7146, SH7149
SH7144, SH7145
SH7083, SH7084, SH7085, SH7086
SH7065
SH7047, SH7049, SH7105, SH7107, SH7109
SH7046, SH7148, SH7101, SH7048, SH7104, SH7106, SH7108
SH7040, SH7041, SH7042, SH7043, SH7044, SH7045
SH7032, SH7034, SH7034B
SH7032
SH7018
SH7014, SH7016, SH7017
SH7011