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| HD6432345 Datasheet, PDF (545/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual | |||
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DADR0
write cycle
DACR
write cycle
DADR0
write cycle
DACR
write cycle
ø
Address
DADR0
DAOE0
Conversion data 1
Conversion data 2
DA0
High-impedance state
tDCONV
Conversion
result 1
Conversion
result 2
tDCONV
Legend
tDCONV: D/A conversion time
Figure 15.2 Example of D/A Converter Operation
15.4 Usage Notes
Setting range for pins other than analog power pin
(1) Relationship between AVCC, VCC, AVSS, and Vss
The relationship between AVCC, VCC, AVSS, and VSS is AVCC = VCC and AVSS = VSS. Also, the
AVCC and AVSS pins should never be left open, even if the D/A converter is not used.
(2) Vref setting range
The setting range for the reference voltage from the Vref pin is Vref ⤠AVCC.
Note: Failure to observe (1) and (2) above could have an adverse effect on the reliability of the
LSI.
532
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