AT40K datasheet(34/67 Pages) ATMEL

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AT40K/AT40KLV Series FPGA

0896C–FPGA–04/02

AC Timing Characteristics – 3.3V Operation AT40KLV

Delays are based on fixed loads and are described in the notes.

Maximum times based on worst case: VCC = 3.0V, temperature = 70°C

Minimum times based on best case: VCC = 3.6V, temperature = 0°C

Maximum delays are the average of tPDLH and tPDHL.

All input IO characteristics measured from a V

IH of 50% of VDD at the pad (CMOS threshold) to the internal VIH of 50% of

DD. All output IO characteristics are measured as the average of tPDLH and tPDHL to the pad VIH of 50% of VDD.

Cell Function

Parameter

Path

-3

Units

Notes

Repeaters

Repeater

PD (Maximum)

L -> E

2.2

1 unit load

Repeater

tPD (Maximum)

E -> E

2.2

1 unit load

Repeater

tPD (Maximum)

L -> L

2.2

1 unit load

Repeater

tPD (Maximum)

E -> L

2.2

1 unit load

Repeater

PD (Maximum)

E -> IO

1.4

1 unit load

Repeater

PD (Maximum)

L -> IO

1.4

1 unit load

All input IO characteristics measured from a VIH of 50% of VDD at the pad (CMOS threshold) to the internal VIH of 50% of

VDD. All output IO characteristics are measured as the average of tPDLH and tPDHL to the pad VIH of 50% of VDD.

Cell Function

Parameter

Path

-3

Units

Notes

Input

tPD (Maximum)

pad -> x/y

1.9

No extra delay

Input

tPD (Maximum)

pad -> x/y

5.8

1 extra delay

Input

tPD (Maximum)

pad -> x/y

11.5

2 extra delays

Input

PD (Maximum)

pad -> x/y

17.4

3 extra delays

Output, Slow

PD (Maximum)

x/y/E/L -> pad

9.1

50 pf load

Output, Medium

tPD (Maximum)

x/y/E/L -> pad

7.6

50 pf load

Output, Fast

tPD (Maximum)

x/y/E/L -> pad

6.2

50 pf load

Output, Slow

tPZX (Maximum)

oe -> pad

9.5

50 pf load

Output, Slow

tPXZ (Maximum)

oe -> pad

2.1

50 pf load

Output, Medium

PZX (Maximum)

oe -> pad

7.4

50 pf load

Output, Medium

PXZ (Maximum)

oe -> pad

2.7

50 pf load

Output, Fast

tPZX (Maximum)

oe -> pad

5.9

50 pf load

Output, Fast

tPXZ (Maximum)

oe -> pad

2.4

50 pf load

AT40K Datasheet(PDF) 34 Page - ATMEL Corporation

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