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ADIS3 ADIS2 ADIS1 ADIS0
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
ANI6/P16
ANI7/P17
INTP3/P03
Trigger Enable
A/D Converter Mode Register
Notes
1.
Selector to select the number of channels to be used for analog input
2.
Selector to select the channel for A/D conversion
Figure 14-1. A/D Converter Block Diagram
Internal Bus
A/D Converter Input Selection Register
4
Sample and Hold Circuit
3
ADM1 to ADM3
Falling Edge
Detection
Circuit
3
CS
TRG
FR1
FR0 ADM3 ADM2 ADM1
Internal Bus
Series Resistor String
Voltage Comparator
Successive Approxi-
mation Register
Control
Circuit
A/D Conversion
Result Register (ADCR)
AV
DD
AV
REF
AV
SS
INTAD
INTP3
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