6. The A/D interrupt handling routine ends.
If ADSF is set to 1 again afterward, A/D conversion starts and steps 2 through 6 take place.
Figures 12-4 and 12-5 show flow charts of procedures for using the A/D converter.
Interrupt
(IRRAD)
Set *
IENAD
Set *
Set *
A/D conversion starts
ADSF
Channel 1 (AN1)
operation state
Idle
A/D conversion (1)
Idle
A/D conversion (2)
Idle
Read conversion result
A/D conversion result (1)
Read conversion result
A/D conversion result (2)
ADRRH
ADRRL
Note: * ( ) indicates instruction execution by software.
Figure 12-3 Typical A/D Converter Operation Timing
340
ETC [ ETC ]
