SBC-C23
SBC-C23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: S.B. - Reviewed by L.B. -Copyright © 2020 SECO S.p.A.
29
3.3.10
Factory reset button connector
To allow the integration of a SBC-C23 based system inside a box PC-like, there is an optional
connector on the carrier board that allows to remote signals for Factory reset.
The dedicated connector is a 2-pin male connector, type MOLEX p/n 53398-0271 or equivalent, with
pinout shown in the table on the left.
Mating connector: MOLEX 51021-0200 crimp housing with MOLEX 50079-8000 crimp terminals.
Signals Description:
Factory_RST#: Reset switch input signal. This signal has to be connected to an external momentary pushbutton (contacts normally open). When the pushbutton is
pressed (i.e., the signal is connected to GND), the pulse of Reset signal will cause the reset of the board.
Please be aware that the factory reset input signal is also managed directly on the carrier board by the pushbutton SW2, so it is not mandatory to connect them
externally using J33.
3.3.11
Boot Mode Selection jumper JP7
The onboard 2-way jumper JP7 can be used to select boot mode for the SBC-C23 module.
When the jumper is inserted, then the processor will search for the USB OTG connection to be established, in order to download a program image to the chip.
When the jumper is not inserted, the processor will continue to execute the boot code from the internal boot ROM.
3.3.12
Boot Selection jumper JP8
The on-board 2-way jumper JP8 can be used to select boot source for the SBC-C23 module.
When the jumper is inserted, then the boot will be performed from the uSD Card, otherwise, if the jumper is not placed, the boot will be performed from the internal
eMMC.
Factory reset button connector J33
Pin Signal
1
Factory_RST#
2
GND
