STLUX385A Datasheet, PDF (25/99 Pages) STMicroelectronics – Digital controller for lighting and power conversion applications

STLUX385A
Product overview
of 1 or 4 times. The analog-to-digital converter can operate either in single or in
continuous/circular modes. The ADC unit has the following main features:
• 8 ADC input channel
• 10-bit resolution
• Single and continuous conversion mode
• Independent channel gain value x1 or x4 to extend dynamic range and resolution to 12-
bit equivalent
• Interrupt events:
– EoC interrupt asserted on end of conversion cycle
– EoS interrupt asserted on end of conversion sequences
– SEQ_FULL_EN interrupt assert on sequencer buffer full
• ADC input voltage range dependent on selected gain value
• Selectable conversion data alignment
• Individual registers for up to 8 successive conversions
3.9
Analog comparators
The STLUX385A includes four independent fast analog comparator units (COMP3-0). Each
comparator has an internal reference voltage. COMP3 can be also configured to use an
external reference voltage connected to CPM3 input pin.
Each comparator reference voltage is generated by a dedicated internal-only 4-bit DAC unit.
The main characteristics of the analog comparator unit (ACU) are the following:
• Each comparator has an internally configurable reference
• Internal reference voltages configurable in 16 steps with 83 mV voltage grain from 0 V
(GND) to 1.24 V (voltage reference)
• Two stage comparator architecture is used to reach a high gain
• Comparator output stage value accessible from processor interface
• Continuous fast cycle comparison time
DocID024387 Rev 2
25/98