A3P030 datasheet(35/220 Pages) MICROSEMI

35 / 220 page

ProASIC3 Flash Family FPGAs

Revision 13

2-21

Summary of I/O Timing Characteristics – Default I/O Software

Settings

Table 2-22 • Summary of AC Measuring Points

Standard

Measuring Trip Point (Vtrip)

3.3 V LVTTL / 3.3 V LVCMOS

1.4 V

3.3 V LVCMOS Wide Range

1.4 V

2.5 V LVCMOS

1.2 V

1.8 V LVCMOS

0.90 V

1.5 V LVCMOS

0.75 V

3.3 V PCI

0.285 * VCCI (RR)

0.615 * VCCI (FF)

3.3 V PCI-X

0.285 * VCCI (RR)

0.615 * VCCI (FF)

Table 2-23 • I/O AC Parameter Definitions

Parameter

Parameter Definition

tDP

Data to Pad delay through the Output Buffer

tPY

Pad to Data delay through the Input Buffer

tDOUT

Data to Output Buffer delay through the I/O interface

tEOUT

Enable to Output Buffer Tristate Control delay through the I/O interface

tDIN

Input Buffer to Data delay through the I/O interface

tHZ

Enable to Pad delay through the Output Buffer—High to Z

tZH

Enable to Pad delay through the Output Buffer—Z to High

tLZ

Enable to Pad delay through the Output Buffer—Low to Z

tZL

Enable to Pad delay through the Output Buffer—Z to Low

tZHS

Enable to Pad delay through the Output Buffer with delayed enable—Z to High

tZLS

Enable to Pad delay through the Output Buffer with delayed enable—Z to Low

A3P030 Datasheet(PDF) 35 Page - Microsemi Corporation

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