EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 161

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Altera Corporation-Preliminary
March 2007
f
Refer to the Assignment Editor chapter in volume 2 of the Quartus II
Handbook for more information about how to set the current strength
feature.
Table 7–1
strength control. These programmable current-strength settings are a
valuable tool in helping decrease the effects of simultaneously switching
outputs (SSO) in conjunction with reducing system noise. The supported
settings ensure that the device driver meets the specifications for I
I
1
1.2-V LVCMOS
1.5-V LVCMOS
1.8-V LVTTL/LVCMOS
OL
Table 7–1. Programmable Current Strength
of the corresponding I/O standard.
I/O Standard
When you use programmable current strength, on-chip series
termination is not available.
shows the possible settings for the I/O standards with current
Top and Bottom I/O Pins
I
OH
/I
OL
Cyclone III Device Handbook, Volume 1
10
12
10
12
16
10
12
16
2
2
4
6
8
2
4
6
8
4
6
8
Current Strength Setting (mA)
(1)
(Part 1 of 3)
Left and Right I/O Pins
I/O Element Features
10
10
12
16
10
12
16
—
2
4
6
8
2
4
6
8
2
4
6
8
OH
and
7–9