Selectable I/O Standards in Cyclone II Devices
Table 10–6. Programmable Drive Strength (Part 2 of 2)
OH/IOL Current Strength Setting (mA)
Top and Bottom I/O Pins Side I/O Pins
I
I/O Standard
SSTL-2 class I
8
8
12
16
—
—
6
12
16
20
24
6
SSTL-2 class II
SSTL-18 class I
8
8
10
12
16
18
8
10
—
—
—
8
SSTL-18 class II
HSTL-18 class I
10
12
16
18
20
8
10
12
N/A
—
—
8
HSTL-18 class II
HSTL-15 class I
HSTL-15 class II
10
12
16
—
—
N/A
These drive-strength settings are programmable on a per-pin basis using
the Quartus II software.
Altera Corporation
February 2008
10–25
Cyclone II Device Handbook, Volume 1