Kontron EPIC/CE, User Manual

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17 General Purpose Inputs/outputs
Kontron User's Guide EPIC/CE 49
17 General Purpose Inputs/outputs
The EPIC/CE Board comes with 26 General Purpose Input/Outputs (GPIOs). Each pin is individually
configurable as an input or open-drain output. When configured as output the user must provide a pull-
up resistor to the desired output voltage level. All output pins have 12mA drive strength. (See the
connector table in Appendix E for detailed information on each pin). The output low level is max. 0,4V.
17.1 Connector
The GPIOs are available on the 2mm grid 2 row connector X3 (28 pins). To find the location of the
Connector on the EPIC/CE board, please see the Appendix E: Connector Layout chapter.
The following table shows the pin-out of the connector.
GPIO Pin
Connector
Top View
Pin GPIO
GP0
*(12csu)
1 2 GP14
*(12t)
GP1
*(12csu)
3 4 GP15
*(12t)
GP2
*(12cs)
5 6 GP16
*(12t)
GP3
*(12cs)
7 8 GP17
*(12t)
GP4
*(12cs)
9 10 GP18
*(24t)
GP5
*(12cs)
11 12 GP19
*(12t)
GP6
*(12cs)
13 14 GP20
*(12t)
GP7
*(12csu)
15 16 GP21
*(24t)
GP8
*(24t)
17 18 GP22
*(12csu)
GP9
*(12t)
19 20 GP23
*(12cs)
GP10
*(12t)
21 22 GP24
*(12cs)
GP11
*(12t)
23 24 GP25
*(12cs)
GP12
*(12t)
25 26 GND
GP13
*(12t)
27 28 GND
Notes:
*(12cs) CMOS level Schmitt-trigger bi-directional pin and open-drain output with 12mA sink
capability
*(12csu)
CMOS level Schmitt-trigger bi-directional pin with internalpull up resistor and open-drain
output with 12mA sink capability
*(12t) TTL level bi-directional pin and open-drain output with 12mA sink capability
*(24t) TTL level bi-directional pin and open-drain output with 24mA sink capability
All of these signals are not galvanically isolated from the board. To ensure that the EPIC/CE Board is
protected from electrical damage, implement external protection circuitry such as optocouplers at
each signal.