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20.2
Register Descriptions
20.2.1
D/A Data Registers 0 to 3 (DADR0 to DADR3)
Bit
:
Initial value
:
R/W
:
D/A data registers 0 to 3 (DADR0 to DADR3) are 8-bit readable/writable registers that store data
to be converted. When analog output is enabled, the value in the D/A data register is converted
and output continuously at the analog output pin.
The D/A data registers are initialized to H'00 by a reset and in hardware standby mode.
20.2.2
D/A Control Register 01 and 23 (DACR01 and DACR23)
Bit
:
DAOE1
Initial value
:
R/W
:
DACR01 and DACR23 are an 8-bit readable/writable register that controls the operation of the
D/A converter module.
DACR01 and DACR23 are initialized to H'1F by a reset and in hardware standby mode.
Bit 7—D/A Output Enable 1 (DAOE1): Controls D/A conversion and analog output.
Bit 7
DAOE1
Description
0
Analog output DA1 (DA3) is disabled
1
D/A conversion is enabled on channel 1. Analog output DA1 (DA3) is enabled
772
7
6
0
0
R/W
R/W
7
6
DAOE0
0
0
R/W
R/W
5
4
0
0
R/W
R/W
5
4
DAE
—
0
1
R/W
—
3
2
0
0
R/W
R/W
3
2
—
—
1
1
—
—
1
0
0
0
R/W
R/W
1
0
—
—
1
1
—
—
(Initial value)
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