h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 636

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 20 D/A Converter
Table 20.2 D/A Channel Enable
Bit 7
DAOE1
0
1
20.4
The D/A converter incorporates two channels of the D/A circuits and can be converted
individually.
When the DAOE bit in DACR is set to 1, D/A conversion is enabled and conversion results are
output.
An example of D/A conversion of channel 0 is shown below. The operation timing is shown in
figure 20.2.
1. Write conversion data to DADR0.
2. When the DAOE0 bit in DACR is set to 1, D/A conversion starts. After the interval of t
3. Conversion starts immediately after DADR0 is modified. After the interval of t
4. When the DAOE0 bit is cleared to 0, analog output is disabled.
Rev. 3.00 Mar 21, 2006 page 582 of 788
REJ09B0300-0300
conversion results are output from the analog output pin DA0. The conversion results are
output continuously until DADR0 is modified or the DAOE0 bit is cleared to 0. The output
value is calculated by the following formula:
conversion results are output.
DADR contents/256
Operation
Bit 6
DAOE0
0
1
0
1
Bit 5
DAE
—
0
1
0
1
—
AVref
Description
Disables D/A conversion
Enables D/A conversion for channel 0
Disables D/A conversion for channel 1
Enables D/A conversion for channels 0 and 1
Disables D/A conversion for channel 0
Enables D/A conversion for channel 1
Enables D/A conversion for channels 0 and 1
Enables D/A conversion for channels 0 and 1
DCONV
,
DCONV
,