ATT3042 データシートの表示（PDF） - Unspecified

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ATT3042

Field-Programmable Gate Arrays

Unspecified 

Data Sheet

February 1997

ATT3000 Series Field-Programmable Gate Arrays

Performance (continued)

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

0.5

–55 –40

0 30

70 85

TEMPERATURE (°C)

125

5-3119(F)

Figure 28. Change in Speed Performance

1.2

1.1

1.0

0.9

4.0

4.5

5.0

5.5

6.0

VCC

5-3120(F)

Figure 29. Speed Performance of a CMOS Device

SWITCH MATRIX

R2

R3

REPOWERING

BUFFER

C1

C2

C3

C4

CLB

R1

TIMING: INCREMENTAL

IF R1 = R2 = R3 = R AND C1 = C2 = C3 = C,

THEN CUMULATIVE TIMING

R1(C1 + C2 + C3)

T1 = 3RC

= 3RC

+ R2(C2 + C3)

T2 = 3RC + 2RC

= 5RC

+ R3 + C3

T3 = 3RC + 2RC + RC

= 6RC

Figure 30. Interconnection Timing Example

6RC + BUFFER

5-3121(F)

Lucent Technologies Inc.

31

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