PIC14000-04 Microchip Technology, PIC14000-04 Datasheet - Page 60

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PIC14000-04

Manufacturer Part Number
PIC14000-04
Description
28-Pin Programmable Mixed Signal Controller
Manufacturer
Microchip Technology
Datasheet

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PIC14000
8.4
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 s. The negative
input terminal is connected to the external 0.1 F (nom-
inal) ramp capacitor.
TABLE 8-1:
DS40122B-page 60
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A/D Comparator
A/D CHANNEL ASSIGNMENT
ADCON0(7:4)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Preliminary
RA0/AN0 pin
RA1/AN1 pin
RA2/AN2 pin
RA3/AN3 pin
Bandgap reference voltage
Slope reference SREFHI
Slope reference SREFLO
Internal temperature sensor
Programmable reference A output
Programmable reference B output
RD4/AN4 pin
RD5/AN5 pin
RD6/AN6 pin
RD7/AN7 pin
Reserved
Reserved
8.5
A total of 16 channels are internally multiplexed to the
single
configuration bits (ADCON0<7:4>) select the channel
to be converted. Refer to Table 8-1 for channel assign-
ments.
A/D
Analog Mux
A/D Channel
comparator
1996 Microchip Technology Inc.
positive
input.
Four

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