HD6433044 Datasheet, PDF (557/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

16.2 Register Descriptions
16.2.1 D/A Data Registers 0 and 1 (DADR0/1)
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
0
0
R/W R/W
The D/A data registers (DADR0 and DADR1) are 8-bit readable/writable registers that store the
data to be converted. When analog output is enabled, the D/A data register values are constantly
converted and output at the analog output pins.
The D/A data registers are initialized to H'00 by a reset and in standby mode.
16.2.2 D/A Control Register (DACR)
Bit
7
6
5
4
3
2
1
0
DAOE1 DAOE0 DAE
—
—
—
—
—
Initial value
0
0
0
1
1
1
1
1
Read/Write
R/W
R/W
R/W
—
—
—
—
—
D/A enable
Controls D/A conversion
D/A output enable 0
Controls D/A conversion and analog output
D/A output enable 1
Controls D/A conversion and analog output
DACR is an 8-bit readable/writable register that controls the operation of the D/A converter.
DACR is initialized to H'1F by a reset and in standby mode.
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