MC81F4104 Datasheet, PDF (83/118 Pages) Finechips – ABOV SEMICONDUCTOR

MC81F4104
19. 12-BIT ADC
ADCH
(Select one input pin
of the assigned pins)
Input Pins
AN0
AN1
AN2
AN4
AN5
AN6
AN7
BGR
M
U
+
X
-
Reference
Voltage
ADCLK
Clock
Selector
Comparator
Control
Logic
EOC Flag
ADDRH (R), ADDRL (R)
Vref AVss
Figure 19-1 A/D Converter Block Diagram
The 12-bit A/D converter (ADC) module uses successive approximation logic to convert analog levels
entering at one of the 1` input channels to equivalent 12-bit digital values. The analog input level must
lie between the V_REF and V_SS values. The A/D converter has the analog comparator with successive
approximation logic, D/A converter logic (resistor string type), A/D mode register (ADMR), 8
multiplexed analog data input pins (AD0-AD2,AD4-AD7,BGR), and 12-bit A/D conversion data output
register (ADDRH/ADDRL).
October 19, 2009 Ver.1.35
83