Datasheet

Section 20 D/A Converter
Rev. 3.00 Mar 21, 2006 page 583 of 788
REJ09B0300-0300
DADR0
write cycle
DACR
write cycle
DADR0
write cycle
DACR
write cycle
Address
φ
DADR0
DAOE0
DA
0
Conversion data (1) Conversion data (2)
High impedance state
Conversion result (1)
Conversion
result (2)
t
DCONV
t
DCONV
Legend:
t
DCONV
: D/A conversion time
Figure 20.2 D/A Converter Operation Example
20.5 Usage Note
When this LSI enters software standby mode with D/A conversion enabled, the D/A output is
retained, and the analog power supply current is equal to as during D/A conversion. If the analog
power supply current needs to be reduced in software standby mode, clear the DAOE1, DAOE0,
and DAE bits all to 0 to disable D/A output.
20.5.1 Module Stop Mode Setting
D/A converter operation can be enabled or disabled using the module stop control register. The
initial setting is for D/A converter operation to be halted. Register access is enabled by canceling
module stop mode. For details, refer to section 26, Power-Down Modes.