Kontron KTA55-pITX - Manual (Page 27)

KTD-S0031-E Page 23 Digital I/O Interface
KTA55/pITX User's Guide
12 Digital I/O Interface
The KTA55/pITX features eight bidirectional I/O lines.
12.1 Electrical Specifications
Digital Inputs
Parameter Min. Typ. Max. Units
Input LOW voltage +1.5 V
Input HIGH voltage +1.5 +3.45 V
Input rate (direct access) 1.6 MHz
Digital Outputs
Parameter Min. Typ. Max. Units
Output LOW voltage +0.4 V
Output HIGH voltage +2.4 +3.3 V
Output LOW/HIGH current 8 mA
Switching rate (direct access) 1.6 MHz
12.2 Connector
The digital I/O interface is available through the connector J1804 (10 pins).
Header Pin Signal Name Function
1 VCC 1) Power +3.3V
2 GPIO4 Bidirectional I/O 4
3 GPIO0 Bidirectional I/O 0
4 GPIO5 Bidirectional I/O 5
5 GPIO1 Bidirectional I/O 1
6 GPIO6 Bidirectional I/O 6
7 GPIO2 Bidirectional I/O 2
8 GPIO7 Bidirectional I/O 7
9 GPIO3 Bidirectional I/O 3
1 2
9 10
10 GND Ground
Note: 1) To protect the external power lines of peripheral devices make sure that
- the wires have the right diameter to withstand the maximum available current.
- the enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.