Specifications

dsPIC33F Family Reference Manual
DS70183A-page 16-8 © 2006 Microchip Technology Inc.
Register 16-3: ADxCON3: ADCx Control Register 3
(1)
R/W-0 U-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
ADRC — — SAMC<4:0>
bit 15 bit 8
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
ADCS<7:0>
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 ADRC: ADC Conversion Clock Source bit
1 = ADC Internal RC Clock
0 = Clock Derived From System Clock
bit 14-13 Unimplemented: Read as ‘0’
bit 12-8 SAMC<4:0>: Auto Sample Time bits
11111 = 31 T
AD
• • •
00001 = 1 T
AD
00000 = 0 TAD
bit 7-0 ADCS<7:0>: ADC Conversion Clock Select bits
11111111 = TCY · (ADCS<7:0> + 1) = 256 · TCY = TAD
• • •
00000010 = T
CY · (ADCS<7:0> + 1) = 3 · TCY = TAD
00000001 = T
CY · (ADCS<7:0> + 1) = 2 · TCY = TAD
00000000 = TCY · (ADCS<7:0> + 1) = 1 · TCY = TAD
Note 1: The ‘x’ in ADxCON3 and ADCx refers to ADC 1 or ADC 2.