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32GA002 Datasheet(PDF) 196 Page - Microchip Technology

Part # 32GA002
Description  28/44-Pin General Purpose, 16-Bit Flash Microcontrollers
PDF  268 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

32GA002 Datasheet(HTML) 196 Page - Microchip Technology

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DS39881D-page 196
 2010 Microchip Technology Inc.
REGISTER 21-4:
AD1CHS: A/D INPUT SELECT REGISTER
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NB
—
—
—
CH0SB3(1,2) CH0SB2(1,2) CH0SB1(1,2) CH0SB0(1,2)
bit 15
bit 8
R/W-0
U-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NA
—
—
—
CH0SA3(1,2) CH0SA2(1,2) CH0SA1(1,2) CH0SA0(1,2)
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
CH0NB:
Channel 0 Negative Input Select for MUX B Multiplexer Setting bit
1
= Channel 0 negative input is AN1
0
= Channel 0 negative input is VR-
bit 14-12
Unimplemented:
Read as ‘0’
bit 11-8
CH0SB3:CH0SB0:
Channel 0 Positive Input Select for MUX B Multiplexer Setting bits(1,2)
1111
= Channel 0 positive input is AN15 (band gap voltage reference)
1100
= Channel 0 positive input is AN12
1011
= Channel 0 positive input is AN11
·····
0001
= Channel 0 positive input is AN1
0000
= Channel 0 positive input is AN0
bit 7
CH0NA:
Channel 0 Negative Input Select for MUX A Multiplexer Setting bit
1
= Channel 0 negative input is AN1
0
= Channel 0 negative input is VR-
bit 6-4
Unimplemented:
Read as ‘0’
bit 3-0
CH0SA3:CH0SA0:
Channel 0 Positive Input Select for MUX A Multiplexer Setting bits(1,2)
1111
= Channel 0 positive input is AN15 (band gap voltage reference)
1100
= Channel 0 positive input is AN12
1011
= Channel 0 positive input is AN11
·····
0001
= Channel 0 positive input is AN1
0000
= Channel 0 positive input is AN0
Note 1:
Combinations ‘1101’ and ‘1110’ are unimplemented; do not use.
2:
Analog channels AN6, AN7 and AN8 are unavailable on 28-pin devices; do not use.



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