HD64F2149 Datasheet, PDF (658/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

19.2 Register Descriptions
19.2.1 D/A Data Registers 0 and 1 (DADR0, DADR1)
Bit
7
6
5
4
3
2
1
0
Initial value
Read/Write
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
D/A data registers 0 and 1 (DADR0 and DADR1) 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.
19.2.2 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
—
—
—
—
—
DACR is an 8-bit readable/writable register that controls the operation of the D/A converter
module.
DACR is 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
0
1
Description
Analog output DA1 is disabled
(Initial value)
D/A conversion is enabled on channel 1. Analog output DA1 is enabled
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