A3P030 datasheet(36/220 Pages) MICROSEMI

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ProASIC3 DC and Switching Characteristics

2-22

Revision 13

Table 2-24 • Summary of I/O Timing Characteristics—Software Default Settings

–2 Speed Grade, Commercial-Case Conditions: TJ = 70°C, Worst Case VCC = 1.425 V,

Worst-Case VCCI (per standard)

Advanced I/O Banks

I/O Standard

3.3 V LVTTL /

3.3 V LVCMOS

12 mA 12 mA High 35

– 0.45 2.64 0.03 0.76 0.32 2.69 2.11 2.40 2.68 4.36 3.78 ns

3.3 V LVCMOS

Wide Range2

100 µA 12 mA High 35

– 0.45 4.08 0.03 0.76 0.32 4.08 3.20 3.71 4.14 6.61 5.74 ns

2.5 V LVCMOS

12 mA 12 mA High 35

– 0.45 2.66 0.03 0.98 0.32 2.71 2.56 2.47 2.57 4.38 4.23 ns

1.8 V LVCMOS

12 mA 12 mA High 35

– 0.45 2.64 0.03 0.91 0.32 2.69 2.27 2.76 3.05 4.36 3.94 ns

1.5 V LVCMOS

12 mA 12 mA High 35

– 0.45 3.05 0.03 1.07 0.32 3.10 2.67 2.95 3.14 4.77 4.34 ns

3.3 V PCI

Per

PCI

spec

–

High 10 25 4 0.45 2.00 0.03 0.65 0.32 2.04 1.46 2.40 2.68 3.71 3.13 ns

3.3 V PCI-X

Per

PCI-X

spec

–

High 10 25 4 0.45 2.00 0.03 0.62 0.32 2.04 1.46 2.40 2.68 3.71 3.13 ns

LVDS

24 mA

–

High

–

– 0.45 1.37 0.03 1.20

–

LVPECL

24 mA

–

High

–

– 0.45 1.34 0.03 1.05

–

Notes:

1. The minimum drive strength for any LVCMOS 3.3 V software configuration when run in wide range is ±100 µA. Drive

strength displayed in the software is supported for normal range only. For a detailed I/V curve, refer to the IBIS models.

2. All LVCMOS 3.3 V software macros support LVCMOS 3.3 V wide range as specified in the JESD-8B specification.

3. For specific junction temperature and voltage supply levels, refer to Table 2-6 on page 2-6 for derating values.

4. Resistance is used to measure I/O propagation delays as defined in PCI specifications. See Figure 2-10 on page 2-63 for

connectivity. This resistor is not required during normal operation.

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