10.5 Reset Signal
The nRST pin is an input pin.
The nRST pin can be used to generate a reset on the A1035-H module. Resetting
the module will result in a restart of the complete firmware. All information stored in
SRAM will still be valid.
10.5.1 Internal Reset Circuit
The A1035-H is already equipped with a voltage monitoring device that generates a
proper power-on reset at the appropriate threshold and delay. Additionally it ad-
dresses the brown-out protection issue. Usually there is no need to deal with the
reset input externally; therefore, the general advice is to leave this pin open.
10.5.2 External Reset Circuit
If, for some reason(s), an external reset input is really desired, the following instruc-
tions are recommended:
Only use an open drain/collector device (e.g. a bipolar NPN transistor to ground,
see below) to pull the nRST pin low in order to issue a reset.
Figure 17: Application note: Recommended external reset circuit
V1.5 – Dec-09
User’s Manual
Page 31 of 37
