43.2 Features

The following are key features of the ADC module:

Up to 12-bit resolution of the numerical output, signed or unsigned (Higher resolutions possible with oversampling).

• Signed/Unsigned results
• Left or Right aligned result
• Fractional or integer results
• Throughput rates (refer to the Electrical Specifications):
  Note:

  Assumes GCLK_ADC = 50 MHz, TAD = 1/50 MHz = 20 ns.

  12-bit resolution: Up to 3.125 Msps

  10-bit resolution: Up to 3.571429 Msps

  8-bit resolution: Up to 4.166667 Msps

• Maximum of 12 unique external analog input channels
  • AIN[11:0] ADC Module 0
• Internal inputs:
  • Temperature Sensor internal analog channel AIN12
  • IVREF 1.2v, internal analog channel AIN13
  Note: The minimum sample rate for ADC is Ftpr >= 100 ksps.
• ADC 12 single ended external analog inputs or up to three differential inputs plus 2 internal channels
• Up to 16 trigger sources, off-chip hardware or on-chip hardware or software generated per analog input channel
• Edge or level active triggering modes, generating single conversions or bursts of conversions
• A scan trigger to start a scan cycle which can individually include or not include any of the analog inputs
• Any of the 16 trigger sources or the scan triggers can be assigned to individual analog input channels
• The scan trigger itself can select any of the 16 trigger sources as its own source
• Programmable sampling time, CORCTRL.SAMC
• Each analog input/channel output register can be read from a general dedicated output register (Write to the CORDYID and CHRDYID registers, then reads the CHRDYDATA register)
• 16 sample deep FIFO supporting all channels
• Digital Comparator for monitoring output values in relation to user-specified ADC result threshold
• Digital filter; providing averaging/oversampling for increased noise immunity and are assignable to any analog input