R5S72611 RENESAS [Renesas Technology Corp], R5S72611 Datasheet - Page 1073

• Manufacturer Part Number: R5S72611
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

23.4
The D/A converter includes D/A conversion circuits for two channels, each of which can operate
independently. When the DAOE bit in DACR is set to 1, D/A conversion is enabled and the
conversion result is output.
An operation example of D/A conversion on channel 0 is shown below. Figure 23.2 shows the
timing of this operation.
1. Write the conversion data to DADR0.
2. Set the DAOE0 bit in DACR to 1 to start D/A conversion. The conversion result is output from
3. If DADR0 is written to again, the conversion is immediately started. The conversion result is
4. If the DAOE0 bit is cleared to 0, analog output is disabled.
the analog output pin DA0 after the conversion time t
continues to be output until DADR0 is written to again or the DAOE0 bit is cleared to 0. The
output value is expressed by the following formula:
output after the conversion time t
Contents of DADR
Operation
φ
Address
DADR0
DAOE0
DA0
[Legend]
t
DCONV
256
: D/A conversion time
High-impedance state
Figure 23.2 Example of D/A Converter Operation
DADR0
write cycle
× AVref
DACR
write cycle
DCONV
Conversion data 1
t
DCONV
has elapsed.
Conversion
result 1
DADR0
write cycle
DCONV
Rev. 2.00 Sep. 07, 2007 Page 1041 of 1312
has elapsed. The conversion result
t
DCONV
Conversion data 2
Section 23 D/A Converter (DAC)
Conversion
result 2
DACR
write cycle
REJ09B0320-0200