HD64F2149 Datasheet, PDF (659/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Bit 6—D/A Output Enable 0 (DAOE0): Controls D/A conversion and analog output.
Bit 6
DAOE0
0
1
Description
Analog output DA0 is disabled
(Initial value)
D/A conversion is enabled on channel 0. Analog output DA0 is enabled
Bit 5—D/A Enable (DAE): Controls D/A conversion, in combination with bits DAOE0 and
DAOE1. D/A conversion is controlled independently on channels 0 and 1 when DAE = 0.
Channels 0 and 1 are controlled together when DAE = 1.
Output of the converted results is always controlled independently by DAOE0 and DAOE1.
Bit 7
DAOE1
0
Bit 6
DAOE0
0
1
1
0
1
*: Don’t care
Bit 5
DAE
*
0
1
0
1
*
D/A conversion
Disabled on channels 0 and 1
Enabled on channel 0
Disabled on channel 1
Enabled on channels 0 and 1
Disabled on channel 0
Enabled on channel 1
Enabled on channels 0 and 1
Enabled on channels 0 and 1
If the chip enters software standby mode while D/A conversion is enabled, the D/A output is
retained and the analog power supply current is the same as during D/A conversion. If it is
necessary to reduce the analog power supply current in software standby mode, disable D/A
output by clearing the DAOE0, DAOE1 and DAE bits to 0.
Bits 4 to 0—Reserved: These bits cannot be modified and are always read as 1.
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