Table 109. Comp1 Input Plus Assignment; Table 110. Comp1 Input Minus Assignment; Figure 138. Comparators Block Diagram; Comp Functional Description - ST STM32L4x6 Reference Manual

Comparator (COMP)
19.3

COMP functional description

19.3.1 COMP block diagram
The block diagram of the comparators is shown in
19.3.2 COMP pins and internal signals
The I/Os used as comparators inputs must be configured in analog mode in the GPIOs
registers.
The comparator output can be connected to the I/Os using the alternate function channel
given in "Alternate function mapping" table in the datasheet.
The output can also be internally redirected to a variety of timer input for the following
purposes:
•
Emergency shut-down of PWM signals, using BKIN and BKIN2 inputs
•
Cycle-by-cycle current control, using OCREF_CLR inputs
•
Input capture for timing measures
It is possible to have the comparator output simultaneously redirected internally and
externally.
PC5
PB2
¼ V
REFINT
½ V
REFINT
578/1693

Figure 138. Comparators block diagram

Table 109. COMP1 input plus assignment

COMP1_INP

Table 110. COMP1 input minus assignment

COMP1_INM
DocID024597 Rev 3
Figure 138: Comparators block
COMP1_INPSEL
0
1
COMP1_INMSEL[2:0]
000
001
RM0351
diagram.