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PIC16F72/P Fiches technique(PDF) 57 Page - Microchip Technology

No de pièce PIC16F72/P
Description  28-Pin, 8-Bit CMOS FLASH MCU with A/D Converter
PDF  136 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F72/P Fiches technique(HTML) 57 Page - Microchip Technology

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 2002 Microchip Technology Inc.
DS39597B-page 55
PIC16F72
FIGURE 10-1:
A/D BLOCK DIAGRAM
FIGURE 10-2:
ANALOG INPUT MODEL
(Input Voltage)
VAIN
VREF
(Reference
Voltage)
VDD
PCFG2:PCFG0
CHS2:CHS0
000
or
010
or
100
001
or
011
or
101
RA5/AN4
RA3/AN3/VREF
RA2/AN2
RA1/AN1
RA0/AN0
100
011
010
001
000
A/D
Converter
CPIN
VA
Rs
ANx
5 pF
VDD
VT = 0.6 V
VT = 0.6 V
I leakage
RIC
≤ 1 k
Sampling
Switch
SS
RSS
CHOLD
= DAC capacitance
VSS
6V
Sampling Switch
5V
4V
3V
2V
567 8 9 10 11
( k
Ω )
VDD
= 51.2 pF
± 500 nA
Legend: CPIN
VT
I leakage
RIC
SS
CHOLD
= input capacitance
= threshold voltage
= leakage current at the pin due to
= interconnect resistance
= sampling switch
= sample/hold capacitance (from DAC)
various junctions



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