Microchip Technology DV320032 Data Sheet
2012-2013 Microchip Technology Inc.
DS60001185C-page 237
PIC32MX330/350/370/430/450/470
REGISTER 22-4:
AD1CHS: ADC INPUT SELECT REGISTER
Bit
Range
Bit
31/23/15/7
Bit
30/22/14/6
Bit
29/21/13/5
Bit
28/20/12/4
Bit
27/19/11/3
Bit
26/18/10/2
Bit
25/17/9/1
Bit
24/16/8/0
31:24
R/W-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NB
—
—
CH0SB<4:0>
23:16
R/W-0
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
CH0NA
—
—
CH0SA<4:0>
15:8
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
7:0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
—
—
—
—
—
—
—
Legend:
R = Readable bit
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 31
CH0NB: Negative Input Select bit for Sample B
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is V
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is V
REFL
bit 30-29
Unimplemented: Read as ‘0’
bit 28-24
CH0SB<4:0>: Positive Input Select bits for Sample B
11110 = Channel 0 positive input is Open
11110 = Channel 0 positive input is Open
(1)
11101 = Channel 0 positive input is CTMU temperature sensor (CTMUT)
(2)
11100 = Channel 0 positive input is IV
REF(3)
11011 = Channel 0 positive input is AN27
•
•
•
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
•
•
•
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
bit 23
CH0NA: Negative Input Select bit for Sample A Multiplexer Setting
(3)
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is V
0 = Channel 0 negative input is V
REFL
bit 22-21
Unimplemented: Read as ‘0’
bit 20-16
CH0SA<4:0>: Positive Input Select bits for Sample A Multiplexer Setting
11110 = Channel 0 positive input is Open
11110 = Channel 0 positive input is Open
(1)
11101 = Channel 0 positive input is CTMU temperature sensor (CTMUT)
(2)
11100 = Channel 0 positive input is IV
REF(3)
11011 = Channel 0 positive input is AN27
•
•
•
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
•
•
•
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
bit 15-0
Unimplemented: Read as ‘0’
Note 1:
This selection is only used with CTMU capacitive and time measurement.
2:
See
for more information.
3:
See
for more information.