The
Up/Down Counter/Totalizer (UP/DOWN COUNT)
mode counts the number of rising edges until the
Reset input is activated. Additionally, the direction of the counter may be controlled using the Direction
input (Pin 4) so that it counts up when
Active
and down when
Inactive
. Note the Direction input replaces
the functionality of the Enable input. The Reset and Direction input can be configured to be
active high
or
active low
. See the
Input Configuration Diagrams
section for details.
PULSE
RESET
Counts up the number of
pulses while reset is inactive
and direction is active
Figure 15: Up/Down Counter/Totalizer example with Active High Reset and Direction
Counter resets to 0 when
reset is active
DIR
Counts down the number of
pulses while reset is inactive
and direction is inactive
1
4
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P a g e
