EVAL-ADM1063LFEB AD [Analog Devices], EVAL-ADM1063LFEB Datasheet - Page 15

• Manufacturer Part Number: EVAL-ADM1063LFEB
• Description: Multisupply Supervisor/Sequencer with ADC and Temperature Monitoring
• Manufacturer: AD [Analog Devices]

VXn PINS AS DIGITAL INPUTS
As discussed in the Supply Supervision with VXn Inputs, the
VXn input pins on the ADM1063 have dual functionality. The
second function is as a digital input to the device. Therefore, the
ADM1063 can be configured for up to five digital inputs. These
inputs are TTL-/CMOS-compatible. Standard logic signals
can be applied to the pins: RESET from reset generators,
POWER_GOOD signals, fault flags, manual resets, and so on.
These signals are available as inputs to the SE and, therefore,
can be used to control the status of the PDOs. The inputs can
be configured to detect either a change in level or an edge.
When configured for level detection, the output of the digital
block is a buffered version of the input. When configured for
edge detection, a pulse of programmable width is output from
the digital block once the logic transition is detected. The width
is programmable from 0 µs to 100 µs.
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The digital blocks feature the same glitch filter function that is
available on the SFDs. This enables the user to ignore spurious
transitions on the inputs. For example, the filter can be used to
debounce a manual reset switch.
When configured as digital inputs, each of the VXn pins has a
weak (10 µA) pull-down current source available for placing the
input into a known condition, even if left floating. The current
source, if selected, weakly pulls the input to GND.
(DIGITAL INPUT)
VXn
VREF = 1.4V
Figure 24. VXn Digital Input Function
+
–
DETECTOR
GLITCH
FILTER
ADM1063
TO
SEQUENCING
ENGINE