Datasheet

Section 17 D/A Converter
Rev.6.00 Sep. 27, 2007 Page 727 of 1268
REJ09B0220-0600
Bit 6—D/A Output Enable 0 (DAOE0): Controls D/A conversion and analog output.
Bit 6
DAOE0 Description
0 Analog output DA0 is disabled (Initial value)
1 Channel 0 D/A conversion is enabled; analog output DA0 is enabled
Bit 5—D/A Enable (DAE): Used together with the DAOE0 and DAOE1 bits to control D/A
conversion. When the DAE bit is cleared to 0, channel 0 and 1 D/A conversions are controlled
independently. When the DAE bit is set to 1, channel 0 and 1 D/A conversions are controlled
together.
Output of conversion results is always controlled independently by the DAOE0 and DAOE1 bits.
Bit 7
DAOE1
Bit 6
DAOE0
Bit 5
DAE Description
0 0 * Channel 0 and 1 D/A conversions disabled
1 0 Channel 0 D/A conversion enabled
Channel 1 D/A conversion disabled
1 Channel 0 and 1 D/A conversions enabled
1 0 0 Channel 0 D/A conversion disabled
Channel 1 D/A conversion enabled
1 Channel 0 and 1 D/A conversions enabled
1 * Channel 0 and 1 D/A conversions enabled
*: Don’t care
If the chip enters software standby mode when D/A conversion is enabled, the D/A output is held
and the analog power current is the same as during D/A conversion. When it is necessary to reduce
the analog power current in software standby mode, clear both the DAOE0 and DAOE1 bits to 0
to disable D/A output.
Bits 4 to 0—Reserved: These bits cannot be modified and are always read as 1.