A/D CONVERTER S3C8245/P8245/C8249/P8249
15-4
BLOCK DIAGRAM
Input Pins
ADC0-ADC7
(P2.0-P2.7)
Clock
Selector
Conversion
Result (ADDATAH/L
F8, F9H, Set 1, Bank 1)
-
+
Upper 8-bit is loaded to
A/D Conversion
Data Register
To ADCON.3
(EOC Flag)
Successive
Approximation
Logic & Register
AV
REF
AV
SS
Analog
Comparator
10-bit D/A
Converter
M
U
X
ADCON.4-.6
(Select one input pin of the assigned pins)
ADCEN.0-.7
(Assign Pins to ADC Input)
ADCON.0
(AD/C Enable)
ADCON.0
(AD/C Enable)
.
.
.
ADCON.2-.1
Figure 15-3. A/D Converter Functional Block Diagram