Operating Conditions
Table 5–2 specifies the recommended operating conditions for Cyclone II
devices. It shows the allowed voltage ranges for VCCINT, VCCIO, and the
operating junction temperature (TJ). The LVTTL and LVCMOS inputs are
powered by VCCIO only. The LVDS and LVPECL input buffers on
dedicated clock pins are powered by VCCINT. The SSTL, HSTL, LVDS
input buffers are powered by both VCCINT and VCCIO
.
Table 5–2. Recommended Operating Conditions
Symbol
Parameter
Conditions
Minimum
Maximum
Unit
VCCINT
Supply voltage for internal
logic and input buffers
(1)
1.15
1.25
V
VCCIO (2)
Supply voltage for output
buffers, 3.3-V operation
(1)
(1)
(1)
(1)
3.135 (3.00)
2.375
3.465 (3.60)
V
V
V
V
(3)
Supply voltage for output
buffers, 2.5-V operation
2.625
Supply voltage for output
buffers, 1.8-V operation
1.71
1.89
Supply voltage for output
buffers, 1.5-V operation
1.425
1.575
TJ
Operating junction
temperature
For commercial use
For industrial use
0
85
°C
°C
°C
–40
–40
100
125
For extended
temperature use
For automotive use
–40
125
°C
Notes to Table 5–2:
(1) The VCC must rise monotonically. The maximum VCC (both VCCIO and VCCINT) rise time is 100 ms for non-A devices
and 2 ms for A devices.
(2) The VCCIO range given here spans the lowest and highest operating voltages of all supported I/O standards. The
recommended VCCIO range specific to each of the single-ended I/O standards is given in Table 5–6, and those
specific to the differential standards is given in Table 5–8.
(3) The minimum and maximum values of 3.0 V and 3.6 V, respectively, for VCCIO only applies to the PCI and PCI-X
I/O standards. Refer to Table 5–6 for the voltage range of other I/O standards.
5–2
Altera Corporation
February 2008
Cyclone II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
