Any smart DAC output channel can be individually configured as a programmable comparator with output buffer being a comparator, VFB node an input to the comparator and an internal DAC ladder as an programmable threshold. Internal features allow the user to set up programmable hysteresis by adjusting internal register values. The GPI can be used as a comparator input and act as a latching comparator. The GPI behavior can be programmed as desired (turn the device on/off, bring the device output to a safety level state, etc. ). All of the configurations can be stored in the non-volatile memory for software-free operation. This simple design enables control of critical modules and in case of a major failure to quick response to the failure without the latency of software processing.

Table 5-12 Design Implementation

Figure 5-12 Hardware Block Diagram
Design Benefits	Suggested device
Programmable hysteresis and latching functions independent from MCU Programmable threshold independent from hardware GPOI for latching comparator function NVM to store all configurations	DAC53701 DAC43204
End Equipment	Design help
Medical equipment Appliances	Programmable comparator using smart DAC Programmable comparator with hysterisis