Epson S1C17624 Technical Manual page 268

ADEN
Trigger
ADIBS
A/D operation
ADD[15:0]
ADCF
Conversion result read
ADOWE
Interrupt request
(2) Multi-channel (AIN0–AIN2) one-time conversion mode (ADCS = 0, ADCE = 2, ADMS = 0)
ADEN
Trigger
ADIBS
A/D operation
ADD[15:0]
ADCF
Conversion result read
ADOWE
Interrupt request
(3) Single channel (AIN0) continuous conversion mode (ADCS = 0, ADCE = 0, ADMS = 1)
ADEN
Trigger
ADIBS
A/D operation
ADD[15:0]
ADCF
Conversion result read
ADOWE
Interrupt request
(4) Multi-channel (AIN0–AIN1) continuous conversion mode (ADCS = 0, ADCE = 1, ADMS = 1)
24.5 a/D Converter interrupts
The A/D converter includes a function for generating the following two different types of interrupts.
• Conversion completion interrupt
• Conversion data overwrite error interrupt
The A/D converter outputs one interrupt signal shared by the two above interrupt causes to the interrupt controller
(ITC). Inspect the status flag to determine the interrupt cause occurred.
S1C17624/604/622/602/621 TeChniCal Manual
Ch.0
Sampling Conversion Sampling
AIN0 AIN0 AIN1
AIN0 converted data AIN1 converted data
Clear
Ch.0
Sampling Conversion Sampling
AIN0 AIN0 AIN0
AIN0 converted data AIN0 converted data
Clear
Ch.0
Sampling Conversion Sampling
AIN0 AIN0 AIN1
AIN0 converted data AIN1 converted data
Clear
Figure 24. 4.5.1 A/D Converter Operations
Seiko epson Corporation
Ch.1 Ch.2
Conversion Sampling Conversion
AIN1 AIN2
Ch.0 Ch.0
Conversion Sampling Conversion
AIN0 AIN0 invalid
Clear
Ch.1 Ch.0
Conversion Sampling Conversion
AIN1 AIN0 invalid
Clear
24 a/D COnVeRTeR (aDC10)
AIN2
AIN2 converted data
ADD[15:0] is overwritten
0 is written to ADCTL
to stop conversion.
0 is written to ADCTL
to stop conversion.
24-7