Datasheet

Section 12 A/D Converter
Rev. 6.00 Aug 04, 2006 page 426 of 680
REJ09B0145-0600
6. The A/D interrupt handling routine ends.
If ADSF is set to 1 again afterward, A/D conversion starts and steps 2 to 6 take place.
Figures 12.4 and 12.5 show flow charts of procedures for using the A/D converter.
Idle A/D conversion (1) Idle A/D conversion (2) Idle
Interrupt
(IRRAD)
IENAD
ADSF
Channel 1 (AN
1
)
operation state
ADRRH
ADRRL
Set *
Set * Set *
Read conversion result Read conversion result
A/D conversion result (1) A/D conversion result (2)
A/D conversion starts
Note: ( ) indicates instruction execution b
y
software.*
Figure 12.3 Typical A/D Converter Operation Timing