EP2C5F256C7N Datasheet, PDF (64/168 Pages) Altera Corporation – Section I. Cyclone II Device Family Data Sheet

I/O Structure & Features
Advanced I/O Standard Support
Table 2–17 shows the I/O standards supported by Cyclone II devices and
which I/O pins support them.
Table 2–17. Cyclone II Supported I/O Standards & Constraints (Part 1 of 2)
I/O Standard
Type
3.3-V LVTTL and LVCMOS
(1)
2.5-V LVTTL and LVCMOS
Single ended
Single ended
1.8-V LVTTL and LVCMOS Single ended
1.5-V LVCMOS
Single ended
SSTL-2 class I
SSTL-2 class II
SSTL-18 class I
SSTL-18 class II
HSTL-18 class I
HSTL-18 class II
HSTL-15 class I
HSTL-15 class II
PCI and PCI-X (1) (3)
Voltage
referenced
Voltage
referenced
Voltage
referenced
Voltage
referenced
Voltage
referenced
Voltage
referenced
Voltage
referenced
Voltage
referenced
Single ended
Differential SSTL-2 class I or Pseudo
class II
differential (4)
Differential SSTL-18 class I Pseudo
or class II
differential (4)
V_CCIO Level
Top & Bottom
I/O Pins
Side I/O Pins
Input
Output
CLK,
DQS
User I/O
Pins
CLK,
DQS
PLL_OUT
User I/O
Pins
3.3 V/ 3.3 V
2.5 V
v
v
v
v
v
3.3 V/ 2.5 V
2.5 V
v
v
v
v
v
1.8 V/ 1.8 V
1.5 V
v
v
v
v
v
1.8 V/ 1.5 V
1.5 V
v
v
v
v
v
2.5 V 2.5 V _v
v
v
v
v
2.5 V 2.5 V _v
v
v
v
v
1.8 V 1.8 V _v
v
v
v
v
1.8 V 1.8 V _v
v
(2)
(2)
(2)
1.8 V 1.8 V _v
v
v
v
v
1.8 V 1.8 V _v
v
(2)
(2)
(2)
1.5 V 1.5 V _v
v
v
v
v
1.5 V 1.5 V _v
v
(2)
(2)
(2)
3.3 V 3.3 V
(5) 2.5 V
2.5 V (5) v
(6)
(5) 1.8 V
1.8 V (5) v
(6)
v
v
v
v
v
(6)
v (7)
v
(6)
2–52
Cyclone II Device Handbook, Volume 1
Altera Corporation
February 2007