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| PIC18F45K80-I Datasheet, PDF (365/622 Pages) Microchip Technology – 28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN and nanoWatt XLP Technology | |||
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FIGURE 23-4:
A/D BLOCK DIAGRAM
PIC18F66K80 FAMILY
CHS<4:0>
11111
11110
11101
11100
11011
11010
11001
11000
1.024V Band Gap
VDDCORE
Reserved
Temperature Diode
(MUX Disconnected)(3)
(Unimplemented)
(Unimplemented)
(Unimplemented)
(Unimplemented)
12-Bit
A/D
Converter
01110
01101
AN14(1)
AN13(1)
Positive Input Voltage
00100
AN4
00011
AN3
00010
AN2
00001
AN1
00000
AN0
CHSN<2:0>
Negative Input Voltage
111
110
Reference
Voltage
VCFG<1:0>
VREF-
VREF+
VNCFG
Internal VREF+
11
(4.1V)
001
10
Internal VREF+
(2.0V)
000
01
AN3
00
VDD(4)
AN2
AN6
AN5
AN0
AVSS(4)
VSS(2,4)
Note 1: Channels, AN14 through AN11, and AN7 through AN5, are implemented only on 40/44-pin and 64-pin devices.
For 28-pin devices, the corresponding ANSELx bits are still implemented for those channels, but have no effect.
2: I/O pins have diode protection to VDD and VSS.
3: Channel 28 turns off analog MUX switches to allow for minimum capacitive loading of A/D inputs for finer
resolution CTMU time measurements.
4: I/O pins have diode protection to VDD and VSS.
ï£ 2010-2012 Microchip Technology Inc.
DS39977F-page 365
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