Datasheet

dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, AND dsPIC33FJ128GPX02/X04
DS70292G-page 274 © 2007-2012 Microchip Technology Inc.
REGISTER 21-6: AD1CHS0: ADC1 INPUT CHANNEL 0 SELECT REGISTER
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>
bit 15 bit 8
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>
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 Sample B bit
Same definition as bit 7.
bit 14-13 Unimplemented: Read as ‘0’
bit 12-8 CH0SB<4:0>: Channel 0 Positive Input Select for Sample B bits
01100 = Channel 0 positive input is AN12
01011 = Channel 0 positive input is AN11
•
•
•
01000 = Channel 0 positive input is AN8
(1)
00111 = Channel 0 positive input is AN7
(1)
00110 = Channel 0 positive input is AN6
(1)
•
•
•
00010 = Channel 0 positive input is AN2
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
bit 7 CH0NA: Channel 0 Negative Input Select for Sample A bit
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VREF-
bit 6-5 Unimplemented: Read as ‘0’
bit 4-0 CH0SA<4:0>: Channel 0 Positive Input Select for Sample A bits
01100 = Channel 0 positive input is AN12
01011 = Channel 0 positive input is AN11
•
•
•
01000 = Channel 0 positive input is AN8
(1)
00111 = Channel 0 positive input is AN7
(1)
00110 = Channel 0 positive input is AN6
(1)
•
•
•
00010 = Channel 0 positive input is AN2
00001 = Channel 0 positive input is AN1
00000 = Channel 0 positive input is AN0
Note 1: These bit settings are reserved on dsPIC33FJ128GPX02, dsPIC33FJ64GPX02 and dsPIC33FJ32GPX02
(28-pin) devices.