Kontron JRexplus-DC - Manual (Page 38)

KTD-S0008-F Page 33 Digital I/O Interface
JRexplus-DC User's Guide
16 Digital I/O Interface
The JRexplus-DC features eight bidirectional I/O lines. All I/O lines are TTL tolerant. Inputs can be driven
from either +3.3V or +5V devices. This feature allows a mixed +3.3V / +5V system environment.
16.1 Electrical Specifications
Digital Inputs
Parameter Min. Typ. Max. Units
Input LOW voltage +0.8 V
Input HIGH voltage +1.7 +5.5 V
Input rate (direct access) 100 kHz
Digital Outputs
Parameter Min. Typ. Max. Units
Output LOW voltage +0.45 V
Output HIGH voltage +2.4 +3.3 V
Output LOW/HIGH current 16 mA
Switching rate (direct access) 100 kHz
16.2 Connector
The digital I/O interface is available through the connector J33 (10 pins).
Header Pin Signal Name Function
1 VCC 1) Power +3.3V
2 GPIO0 Bidirectional I/O 0
3 GPIO1 Bidirectional I/O 1
4 GPIO2 Bidirectional I/O 2
5 GPIO3 Bidirectional I/O 3
6 GPIO4 Bidirectional I/O 4
7 GPIO5 Bidirectional I/O 5
8 GPIO6 Bidirectional I/O 6
9 GPIO7 Bidirectional I/O 7
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.
- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.
2) The voltage level is not specified by the manufacturer