Data Sheet

ISM14585-L35 Specification
DOC-DS-14585-201807-3.0
Confidential Inventek Systems
Page 20
9.4 External Reset
The ISM14585-L35 comprises an RST pad which is active high. It contains an RC filter
for spikes suppression with 400kΩ and 2.8pF for the resistor and the capacitor
respectively. It also contains a 25kΩ pull-down resistor. This pad should be connected
to ground if not needed by the application.
The response is illustrated in the Figure 4 which displays the voltage (V) on the vertical
axis and the time (μs) on the horizontal axis:.
Figure 4. RST Pad Latency
The typical latency of the RST pad is in the range of 2us.
9.4.1 POR, HW AND SW RESET
The Power-On Reset (POR) signal is generated:
● Internally and will release the system’s flip flops as soon as the VDD voltage crosses
the minimum threshold value.
● Externally by a Power-On Reset source (RST pad or GPIO).
There are three main reset signals in the ISM14585-L35: