PROASIC3E datasheet(5/37 Pages) ACTEL

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I/O Structures in IGLOOe and Pro ASIC3E Devices

v1.4

Table 3 • VCCI Voltages and Compatible IGLOOe and ProASIC3E Standards

VCCI and VMV (typical)

Compatible Standards

3.3 V

LVTTL/LVCMOS 3.3, PCI 3.3, SSTL3 (Class I and II), GTL+ 3.3, GTL 3.3, LVPECL

2.5 V

LVCMOS 2.5, LVCMOS 2.5/5.0, SSTL2 (Class I and II), GTL+ 2.5, GTL 2.5, LVDS, DDR

LVDS, B-LVDS, and M-LVDS

1.8 V

LVCMOS 1.8

1.5 V

LVCMOS 1.5, HSTL (Class I and II)

Table 4 • VREF Voltages and Compatible IGLOOe and ProASIC3E Standards

VREF (typical)

Compatible Standards

1.5 V

SSTL3 (Class I and II)

1.25 V

SSTL2 (Class I and II)

1.0 V

GTL+ 2.5, GTL+ 3.3

0.8 V

GTL 2.5, GTL 3.3

0.75 V

HSTL (Class I and II)

Table 5 • Legal IGLOOe and ProASIC3E I/O Usage Matrix within the Same Bank

3.3 V

–

0.80 V

1.00 V

1.50 V

2.5 V

–

0.80 V

1.00 V

1.25 V

1.8 V

–

1.5 V

–

0.75 V

Note: White box: Allowable I/O standard combination

Gray box: Illegal I/O standard combination

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