NEC uPD78P078 - Manual (Page 294)

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CHAPTER 15 A/D CONVERTER
ANI0/P10
ANI1/P11
ANI2/P12
ANI3/P13
ANI4/P14
ANI5/P15
ANI6/P16
ANI7/P17
Selector
A /D Converter Mode Register
Selector
Trigger
Enable
ES40, ES41
Note 3
Sample & Hold Circuit
3
CS
Internal Bus
Edge
Detector
Control
Circuit
Series Resistor String
AV DD
Voltage
Comparator
Tap Selector
INTAD
INTP3
Successive
Approximation
Register (SAR)
ADIS3
4
Internal Bus
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 REF0
AV SS
Figure 15-1. 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. Bits 0, 1 of external interrupt mode register 1 (INTM1)