Lattice Semiconductor
ispXPLD 5000MX Family Data Sheet
26
sysIO Recommended Operating Conditions
Standard
VCCO (V)
2
VREF (V)
Min.
Typ.
Max.
Min.
Typ.
Max.
LVCMOS 3.3
3.0
3.3
3.6
—
LVCMOS 2.5
2.3
2.5
2.7
—
LVCMOS 1.8
1
1.65
1.8
1.95
—
LVTTL
3.0
3.3
3.6
—
PCI 3.3
3.0
3.3
3.6
—
AGP-1X
3.15
3.3
3.45
—
SSTL 2
2.3
2.5
2.7
1.15
1.25
1.35
SSTL 3
3.0
3.3
3.6
1.3
1.5
1.7
CTT 3.3
3.0
3.3
3.6
1.35
1.5
1.65
CTT 2.5
2.3
2.5
2.7
1.35
1.5
1.65
HSTL Class I
1.4
1.5
1.6
0.68
0.75
0.9
HSTL Class III
1.4
1.5
1.6
—
0.9
—
HSTL Class IV
1.4
1.5
1.6
—
0.9
—
GTL+
1.4
—
3.6
0.882
1.0
1.122
LVDS
2.3
2.5/3.3
3.6
—
1. Design tools default setting.
2. Inputs are independent of VCCO setting. However, VCCO must be set within the valid operating range for one of the supported standards.
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