PIC14000T-04/SS View Datasheet(PDF) - Microchip Technology
Part Name
Description
MFG CO.
'PIC14000T-04/SS' PDF : 153 Pages View PDF
PIC14000
8.4 A/D Comparator
The PIC14000 includes a high gain comparator for
A/D conversions. The positive input terminal of the A/D
comparator is connected to the output of an analog
mux through an RC low-pass filter. The nominal
time-constant for the RC filter is 3.5 µs. The negative
input terminal is connected to the external 0.1 µF (nom-
inal) ramp capacitor.
8.5 Analog Mux
A total of 16 channels are internally multiplexed to the
single A/D comparator positive input. Four
configuration bits (ADCON0<7:4>) select the channel
to be converted. Refer to Table 8-1 for channel assign-
ments.
TABLE 8-1:
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A/D CHANNEL ASSIGNMENT
ADCON0(7:4)
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
A/D Channel
0
RA0/AN0 pin
1
RA1/AN1 pin
0
RA2/AN2 pin
1
RA3/AN3 pin
0
Bandgap reference voltage
1
Slope reference SREFHI
0
Slope reference SREFLO
1
Internal temperature sensor
0
Programmable reference A output
1
Programmable reference B output
0
RD4/AN4 pin
1
RD5/AN5 pin
0
RD6/AN6 pin
1
RD7/AN7 pin
0
Reserved
1
Reserved
DS40122B-page 60
Preliminary
© 1996 Microchip Technology Inc.
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