Datasheet

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
15 14 13 12 11 10 98
000001 00
765432 10
000001 00
After Conversion and Comparison
Compare Only
(‘10’)
Compare and
Store (‘01’)
ADC1BUF15 — —
ADC1BUF14 — —
ADC1BUF13 — —
ADC1BUF12 — —
ADC1BUF11 — —
ADC1BUF10 Threshold 2 Conversion Value
ADC1BUF9 — —
ADC1BUF8 — —
ADC1BUF7 — —
ADC1BUF6 — —
ADC1BUF5 — —
ADC1BUF4 — —
ADC1BUF3 — —
ADC1BUF2 Threshold 1 Threshold 1
ADC1BUF1 — —
ADC1BUF0 — —
AD1CHITL
15 14 13 12 11 10 9 8
00000000
76543210
00000000