70592C Datasheet, PDF (213/314 Pages) Microchip Technology – High-Performance, 16-bit Microcontrollers

PIC24HJXXXGPX06A/X08A/X10A
REGISTER 20-1: ADxCON1: ADCx CONTROL REGISTER 1(where x = 1 or 2) (CONTINUED)
bit 3
SIMSAM: Simultaneous Sample Select bit (only applicable when CHPS<1:0> = 01 or 1x)
When AD12B = 1, SIMSAM is: U-0, Unimplemented, Read as ‘0’
1 = Samples CH0, CH1, CH2, CH3 simultaneously (when CHPS<1:0> = 1x); or
Samples CH0 and CH1 simultaneously (when CHPS<1:0> = 01)
0 = Samples multiple channels individually in sequence
bit 2
ASAM: ADC Sample Auto-Start bit
1 = Sampling begins immediately after last conversion. SAMP bit is auto-set
0 = Sampling begins when SAMP bit is set
bit 1
SAMP: ADC Sample Enable bit
1 = ADC sample/hold amplifiers are sampling
0 = ADC sample/hold amplifiers are holding
If ASAM = 0, software may write ‘1’ to begin sampling. Automatically set by hardware if ASAM = 1.
If SSRC = 000, software may write ‘0’ to end sampling and start conversion. If SSRC ≠ 000,
automatically cleared by hardware to end sampling and start conversion.
bit 0
DONE: ADC Conversion Status bit
1 = ADC conversion cycle is completed.
0 = ADC conversion not started or in progress
Automatically set by hardware when analog-to-digital conversion is complete. Software may write ‘0’
to clear DONE status (software not allowed to write ‘1’). Clearing this bit will NOT affect any operation
in progress. Automatically cleared by hardware at start of a new conversion.
© 2011 Microchip Technology Inc.
DS70592C-page 213