R01UH0823EJ0100 Rev.1.00 Page 1630 of 1823
Jul 31, 2019
RX23W Group 45. 12-Bit D/A Converter (R12DAA)
45.6 Usage Notes
45.6.1 Module Stop Function Setting
Operation of the 12-bit D/A converter can be disabled or enabled using the module stop control register. The initial
setting is for operation of the 12-bit D/A converter to be stopped. Register access is enabled by releasing the module stop
state. For details, refer to
section 11, Low Power Consumption.
45.6.2 Operation of the D/A Converter in Module Stop State
When the MCU enters the module stop state with D/A conversion enabled, the D/A converter outputs are retained, and
the analog power supply current is the same as during D/A conversion. If the analog power supply current has to be
reduced in the module stop state, disable D/A conversion by setting the DACR.DAOE1, and DAOE0 bits to 0.
45.6.3 Operation of the D/A Converter in Software Standby Mode
When the MCU enters software standby mode with D/A conversion enabled, the D/A converter outputs are retained, and
the analog power supply current is the same as during D/A conversion. If the analog power supply current has to be
reduced in software standby mode, disable D/A conversion by setting the DACR.DAOE1, and DAOE0 bits to 0.
45.6.4 Note on Usage When Measure against Interference between D/A and A/D
Conversion is Enabled
When the DAADSCR.DAADST bit is 1 (measure against interference between D/A and A/D conversion is enabled), do
not place the 12-bit A/D converter in the module stop state. It may halt D/A conversion in addition to A/D conversion.
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