Altera DE2-115 User Manual page 47

GND pins. Figure 4-15
consumption of the daughter card that connects to GPIO port is shown in
Supplied Voltage
5V
3.3V
Each pin on the expansion headers is connected to two diodes and a resistor that provides protection
against high and low voltages.
the header, but this circuitry is included for all 36 data pins.
Figure 4-16 Connections between the GPIO connector and Cyclone IV E FPGA
shows the I/O distribution of the GPIO connector. The maximum power
Figure 4-15 GPIO Pin Arrangement
Table 4-10 Power Supply of the Expansion Header
Figure 4-16
Max. Current Limit
1A
1.5A
shows the protection circuitry for only one of the pin on
46
Table 4-10.