IBM uPD78082 - Manual (Page 143)

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CHAPTER 10 A/D CONVERTER
Figure 10-1. A/D Converter Block Diagram
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.
3. External interrupt mode register 1 (INTM1) bits 0 and 1.
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
ANI6/P16
ANI7/P17
Selector
A /D Converter Mode Register
3
Trigger Enable
ES40, ES41 Note 3
Sample & Hold Circuit
CS
ADIS3
4
Internal Bus
Internal Bus
Edge
Detector
Control
Circuit
Series Resistor String
AV DD
Voltage
Comparator
Tap Selector
INTAD
INTP3
Successive
Approximation
Register (SAR)
A / D Converter Input Select Register
ADIS2 ADIS1 ADIS0
Note 1 Note 2
INTP3/P03
TRG FR1 FR0 ADM3 ADM2 ADM1
A / D Conversion
Result Register
(ADCR)
AV REF
AV SS
Selector
HSC