PIC24FJ16MC101_12 Datasheet, PDF (198/350 Pages) Microchip Technology – 16-bit Microcontrollers (up to 32 KB Flash and 2 KB SRAM)

PIC24FJ16MC101/102 AND PIC24FJ32MC101/102/104
REGISTER 19-2: AD1CON2: ADC1 CONTROL REGISTER 2
R/W-0
R/W-0
R/W-0
U-0
U-0
VCFG<2:0>
—
—
bit 15
R/W-0
CSCNA
R/W-0
R/W-0
CHPS<1:0>
bit 8
R-0
BUFS
bit 7
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
SMPI<3:0>
BUFM
ALTS
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-13
bit 12-11
bit 10
bit 9-8
bit 7
bit 6
bit 5-2
bit 1
bit 0
VCFG<2:0>: Converter Voltage Reference Configuration bits
ADREF+
xxx
AVDD
ADREF-
AVSS
Unimplemented: Read as ‘0’
CSCNA: Scan Input Selections for CH0+ during Sample A bit
1 = Scan inputs
0 = Do not scan inputs
CHPS<1:0>: Select Channels Utilized bits
1x = Converts CH0, CH1, CH2 and CH3
01 = Converts CH0 and CH1
00 = Converts CH0
BUFS: Buffer Fill Status bit (valid only when BUFM = 1)
1 = ADC is currently filling second half of buffer, user should access data in the first half
0 = ADC is currently filling first half of buffer, user application should access data in the second half
Unimplemented: Read as ‘0’
SMPI<3:0>: Sample/Convert Sequences Per Interrupt Selection bits
1111 = Interrupts at the completion of conversion for each 16th sample/convert sequence
1110 = Interrupts at the completion of conversion for each 15th sample/convert sequence
•
•
•
0001 = Interrupts at the completion of conversion for each 2nd sample/convert sequence
0000 = Interrupts at the completion of conversion for each sample/convert sequence
BUFM: Buffer Fill Mode Select bit
1 = Starts filling first half of buffer on first interrupt and the second half of buffer on next interrupt
0 = Always starts filling buffer from the beginning
ALTS: Alternate Input Sample Mode Select bit
1 = Uses channel input selects for Sample A on first sample and Sample B on next sample
0 = Always uses channel input selects for Sample A
DS39997C-page 198
Preliminary
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