15
4.6
Common Features
General Purpose Outputs
Figure 14: GPO Header
Table 13: GPO Pinout
Pin Function Pin Function
1
GPO 1
8
Gnd
2
GPO 2
9
Gnd
3
GPO 3
10
Gnd
4
GPO 4
11
Gnd
5
GPO 5
12
Gnd
6
GPO 6
13
Gnd
7
Vcc
14
Gnd
A unique feature of the GLK240128-25/GLT240128 is the ability to control relays
*
and other external
devices using one of six General Purpose Outputs. Each can source up to 10mA of current at five volts
when on or sink 20mA at zero volts when off. The two row, fourteen pin header can be interfaced to a
number of female connectors to provide control to any peripheral devices required.
*Note:
If connecting a relay, be sure that it is fully clamped using a diode and capacitor in order to absorb any
electro-motive force (EMF) which will be generated.
Dallas One-Wire Connector
Figure 15: Dallas One-Wire Connector
Table 14: Dallas One-Wire Pinout
Pin
Function
1
Vcc
2
D
3
Gnd
In addition to the six general purpose outputs the GLK24064-25-1U/GLT24064-1U offers an Optional
Dallas One-Wire bridge, to allow for an additional thirty two one-wire devices to be connected to the
display. This header can be populated with a Tyco 173979 connector at an added cost by custom order
only. Please use the Contact section to request more information from the Matrix Orbital sales team.
