HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 545

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

15.4
Setting range for pins other than analog power pin
(1) Relationship between AV
(2) Vref setting range
Note: Failure to observe (1) and (2) above could have an adverse effect on the reliability of the
532
The relationship between AV
AV
The setting range for the reference voltage from the Vref pin is Vref AV
ø
Address
DADR0
DAOE0
DA0
Legend
t
DCONV
CC
LSI.
and AV
Usage Notes
: D/A conversion time
High-impedance state
write cycle
SS
DADR0
pins should never be left open, even if the D/A converter is not used.
Figure 15.2 Example of D/A Converter Operation
CC
, V
write cycle
CC
DACR
CC
, V
, AV
Conversion data 1
CC
, AV
SS
t
, and Vss
DCONV
SS
, and V
Conversion
SS
result 1
is AV
write cycle
DADR0
CC
= V
CC
t
DCONV
and AV
Conversion data 2
CC
Conversion
SS
result 2
.
write cycle
= V
DACR
SS
. Also, the