ProASIC3 DC and Switching Characteristics
v1.1
2 - 17
Overview of I/O Performance
Summary of I/O DC Input and Output Levels – Default I/O Software
Settings
Table 2-14 Summary of Maximum and Minimum DC Input and Output Levels Applicable to Commercial and
Industrial Conditions—Software Default Settings
Applicable to Advanced I/O Banks
I/O Standard
Drive
Strength
Slew
Rate
VIL
VIH
VOL
VOH
IOL IOH
Min, V
Max, V
Min, V
Max, V
Min, V
mA mA
3.3 V LVTTL /
3.3 V LVCMOS
12 mA
High
–0.3
0.8
2
3.6
0.4
2.4
12
2.5 V LVCMOS
12 mA
High
–0.3
0.7
1.7
3.6
0.7
1.7
12
1.8 V LVCMOS
12 mA
High
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45 12
12
1.5 V LVCMOS
12 mA
High
–0.3
0.30 * VCCI
0.7 * VCCI
3.6
0.25 * VCCI 0.75 * VCCI 12
12
3.3 V PCI
Per PCI specifications
3.3 V PCI-X
Per PCI-X specifications
Note: Currents are measured at 85°C junction temperature.
Table 2-15 Summary of Maximum and Minimum DC Input and Output Levels Applicable to Commercial and
Industrial Conditions—Software Default Settings
Applicable to Standard Plus I/O Banks
I/O Standard
Drive
Strength
Slew
Rate
VIL
VIH
VOL
VOH
IOL IOH
Min, V
Max, V
Min, V
Max, V
Min, V
mA mA
3.3 V LVTTL /
3.3 V LVCMOS
12 mA
High
–0.3
0.8
2
3.6
0.4
2.4
12
2.5 V LVCMOS
12 mA
High
–0.3
0.7
1.7
3.6
0.7
1.7
12
1.8 V LVCMOS
8 mA
High
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
8
1.5 V LVCMOS
4 mA
High
–0.3
0.30 * VCCI
0.7 * VCCI
3.6
0.25 * VCCI
0.75 * VCCI
4
3.3 V PCI
Per PCI specifications
3.3 V PCI-X
Per PCI-X specifications
Note: Currents are measured at 85°C junction temperature.
Table 2-16 Summary of Maximum and Minimum DC Input and Output Levels Applicable to Commercial and
Industrial Conditions—Software Default Settings
Applicable to Standard I/O Banks
I/O Standard
Drive
Strength
Slew
Rate
VIL
VIH
VOL
VOH
IOL IOH
Min, V
Max, V
Min, V
Max, V
Min, V
mA mA
3.3 V LVTTL /
3.3 V LVCMOS
8 mA
High
–0.3
0.8
2
3.6
0.4
2.4
8
2.5 V LVCMOS
8 mA
High
–0.3
0.7
1.7
3.6
0.7
1.7
8
1.8 V LVCMOS
4 mA
High
–0.3
0.35 * VCCI 0.65 * VCCI
3.6
0.45
VCCI – 0.45
4
1.5 V LVCMOS
2 mA
High
–0.3
0.30 * VCCI
0.7 * VCCI
3.6
0.25 * VCCI 0.75 * VCCI
22
Note: Currents are measured at 85°C junction temperature.