Nebusens n-Core Sirius A Device, Руководство пользователя

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6
Sirius A User Manual
5.1. GPO
Sirius A device has four general-purpose opto-coupled
digital outputs (LTV847S
1
), accessible from the block E2
(pins 1 - 4).
Voltage and current characteristics for each GPO are
determined by the transistors of the opto-coupler LTV847S.
Next, it is shown the connections for each of the outputs.
The GPO_VCC_IN (block E2, pin 5) is the union of all the collectors of the opto-transistors of the LTV847S.
Each GPO output corresponds with the emitter of an opto-transitor of the LTV847S. In order to activate the
GPO is necessary to supply a voltage between 3.3V and 5V (recommended) to GPO_VCC_IN input. This
voltage will be transmitted to each GPO, considering the losses of each LTV847S opto-transistor.
5.2. GPI
Sirius A device has four general-purpose opto-coupled
digital inputs (LTV847S
1
), accessible from the block E2 (pins
8 - 11). GPI3 (pin 10) and GPI4 (pin 11) can be configured
as external interruptions (IRQs).
Voltage and current characteristics for each GPI are
determined by the LEDs of the opto-coupler LTV847S.
Next, it is shown the connections for each of the opto-coupled digital inputs.
1
http://www.us.liteon.com/downloads/LTV-817-827-847.PDF
IMPORTANT NOTE: In order to use the GPOs is necessary
that reference pins (GND) of both the Sirius A device
(block E2, pins 6 and 7) and the input device (for
example, an actuator) are connected to each other.