Справочник Пользователя для IBM uPD78082(A)

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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

Trigger Enable

ES40, ES41

Note 3

Sample & Hold Circuit

ADIS3

Internal Bus

Edge
Detector

Control

Circuit

Series Resistor String

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)

REF

Selector

HSC