a3p250 Actel Corporation, a3p250 Datasheet - Page 33

• Manufacturer Part Number: a3p250
• Description: Proasic3 Flash Family Fpgas With Optional Soft Arm Support
• Manufacturer: Actel Corporation

Table 2-24 • Summary of I/O Timing Characteristics—Software Default Settings
Table 2-25 • Summary of I/O Timing Characteristics—Software Default Settings
I/O Standard
3.3 V LVTTL /
3.3 V LVCMOS
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
3.3 V PCI
3.3 V PCI-X
Notes:
1. For specific junction temperature and voltage supply levels, refer to
2. Resistance is used to measure I/O propagation delays as defined in PCI specifications. See
I/O Standard
3.3 V LVTTL /
3.3 V LVCMOS
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
Notes:
1. For specific junction temperature and voltage supply levels, refer to
2. Resistance is used to measure I/O propagation delays as defined in PCI specifications. See
values.
page 2-55
values.
page 2-55
–2 Speed Grade, Commercial-Case Conditions: T
V
Standard Plus I/O Banks
–2 Speed Grade, Commercial-Case Conditions: T
Worst Case V
Standard I/O Banks
for connectivity. This resistor is not required during normal operation.
for connectivity. This resistor is not required during normal operation.
CCI
Per PCI-X spec. High 10 pF 25
Per PCI spec.
= 3.0 V
12 mA
12 mA
8 mA
4 mA
8 mA High
8 mA High
4 mA High
2 mA High
CCI
= 3.0 V
High 35 pF
High 35 pF
High 35 pF
High 35 pF
High 10 pF 25
35 pF
35 pF
35 pF
35 pF
–
–
–
–
–
–
–
–
2
2
0.49 2.36 0.03 0.75 0.32 2.40 1.93 2.08 2.41 4.07 3.60 ns
0.49 2.39 0.03 0.97 0.32 2.44 2.35 2.11 2.32 4.11 4.02 ns
0.49 3.03 0.03 0.90 0.32 2.87 3.03 2.19 2.32 4.54 4.70 ns
0.49 3.61 0.03 1.06 0.32 3.35 3.61 2.26 2.34 5.02 5.28 ns
0.49 1.72 0.03 0.64 0.32 1.76 1.27 2.08 2.41 3.42 2.94 ns
0.49 1.72 0.03 0.64 0.32 1.76 1.27 2.08 2.41 3.42 2.94 ns
0.49 3.29 0.03 0.75 0.32 3.36 2.80 1.79 2.01
0.49 3.56 0.03 0.96 0.32 3.40 3.56 1.78 1.91
0.49 4.74 0.03 0.90 0.32 4.02 4.74 1.80 1.85
0.49 5.71 0.03 1.06 0.32 4.71 5.71 1.83 1.83
v1.2
J
J
= 70°C, Worst Case V
= 70°C, Worst Case V
ProASIC3 DC and Switching Characteristics
Table 2-6 on page 2-6
Table 2-6 on page 2-6
CC
CC
= 1.425 V, Worst Case
= 1.425 V,
Figure 2-10 on
Figure 2-10 on
for derating
for derating
2 - 21
ns
ns
ns
ns