Microchip Technology DM183037 Data Sheet

PIC18F97J94 FAMILY

DS30575A-page 474

 2012 Microchip Technology Inc.

For this reason, users must always carefully consider
the allocation and use of the upper analog channels
(both external and internal) when using Windowed
Compare modes. Wherever possible, exclude the
upper analog channels for Threshold Detect
operations, and convert and test those channels in a
separate routine.

FIGURE 22-14:

OUTSIDE WINDOW COMPARISON OPERATION (OVER THRESHOLD 2)

ADC1BUF15

—

ADC1BUF14

—

ADC1BUF13

—

ADC1BUF12

—

ADC1BUF11

—

ADC1BUF10

Threshold 2

ADC1BUF9

—

ADC1BUF8

—

ADC1BUF7

—

ADC1BUF6

—

ADC1BUF5

—

ADC1BUF4

—

ADC1BUF3

—

ADC1BUF2

Threshold 1

ADC1BUF1

—

ADC1BUF0

—

Before Conversion and Comparison

AD1CHITL

After Conversion and Comparison

Compare Only

(‘10’)

Compare and

Store (‘01’)