HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 485

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

An example of D/A conversion on channel 0 is given next. Timing is indicated in figure 15.2.
1. Data to be converted is written in DADR0.
2. Bit DAOE0 is set to 1 in DACR. D/A conversion starts and DA
3. If the DADR0 value is modified, conversion starts immediately, and the result is output after
4. When the DAOE0 bit is cleared to 0, DA0 becomes an input pin.
φ
Address
DADR0
DAOE0
DA
Legend:
t
DCONV
converted result is output after the conversion time.
The output value is
Output of this conversion result continues until the value in DADR0 is modified or the
DAOE0 bit is cleared to 0.
the conversion time.
0
: D/A conversion time
DADR0
write cycle
High-impedance state
Figure 15.2 Example of D/A Converter Operation
DADR contents
DACR
write cycle
256
Conversion data 1
t
DCONV
× V
REF
Conversion
result 1
Rev.4.00 Aug. 20, 2007 Page 441 of 638
DADR0
write cycle
0
becomes an output pin. The
t
DCONV
Conversion data 2
15. D/A Converter
REJ09B0395-0400
Conversion
result 2
DACR
write cycle