HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 366

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Start
Set A/D conversion speed
and input channels
Enable A/D conversion
end interrupt
Start A/D conversion
Yes
A/D conversion
end interrupt?
No
Clear bit IRRAD to
0 in IRR2
Read ADRR data
Yes
Perform A/D
conversion?
No
End
Figure 12.5 Flow Chart of Procedure for Using A/D Converter (2) (Interrupts Used)
12.6
Application Notes
Data in the A/D result register (ADRR) should be read only when the A/D start flag (ADSF) in
the A/D start register (ADSR) is cleared to 0.
Changing the digital input signal at an adjacent pin during A/D conversion may adversely
affect conversion accuracy.
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