Specifications

WM_PRJ_Q2501_PTS_002 - 001
March 2004
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3.2.3 Reset function (~RST)
The ~RST input (pin 34) is used to force a reset procedure by providing low
level during at least 500 µs.
This signal has to be considered as an emergency reset only: a reset procedure
is automatically driven by an internal hardware during the power-up sequence.
This signal can also be used to provide a reset to an external device (it then
behaves as an output).
If no external reset is necessary this input can be left open.
If used (emergency reset), it has to be driven by an open collector or an open
drain output (due to the 4.7 kΩ internal pull-up resistor embedded into the
module) as shown in the diagram hereunder.
~RST: Pin 34
Switch RESET
Figure 8: Example of ~RST pin connection
Switch RESET ~RST pin Operating mode
1 0 Reset activated
0 1 Reset inactive