OR2T15B7BA352-DB View Datasheet(PDF) - Lattice Semiconductor

Part Name

Description

Manufacturer

OR2T15B7BA352-DB

ORCA® Series 2 Field-Programmable Gate Arrays

Lattice Semiconductor 

ORCA Series 2 FPGAs

Data Sheet

November 2006

Package Parasitics (continued)

These parameters are important in determining ground bounce noise and inductive crosstalk noise. Three capaci-

tances in pF are listed: CM, the mutual capacitance of the lead to the nearest neighbor lead; and C1 and C2, the

total capacitance of the lead to all other leads (all other leads are assumed to be grounded). These parameters are

important in determining capacitive crosstalk and the capacitive loading effect of the lead.

The parasitic values in Table 30 are for the circuit model of bond wire and package lead parasitics. If the mutual

capacitance value is not used in the designer’s model, then the value listed as mutual capacitance should be

added to each of the C1 and C2 capacitors.

S Table 30. Series 2 Package Parasitics

E Package Type

LSW

LMW

RW

C1

C2

CM

LSL

LML

84-Pin PLCC

3

1

140

1

1

0.5

7—11

3—6

IC 100-Pin TQFP

3

1

150

0.5

0.5

0.4

4—6

2—3

144-Pin TQFP

3

1

140

1

1

0.6

4—6 2—2.5

D 160-Pin QFP

4

1.5

180

1.5

1.5

1

10—13 6—8

V 208-Pin SQFP

4

2

200

1

1

1

7—10

4—6

E 208-Pin SQFP2

4

2

200

1

1

1

6—9

4—6

E 240-Pin SQFP

4

2

200

1

1

1

8—12

5—8

U 240-Pin SQFP2

4

2

200

1

1

1

7—11

4—7

256-Pin PBGA

5

2

220

1

1

1

5—8

2—4

D IN 304-Pin SQFP

5

2

220

1

1

1

12—18 7—12

304-Pin SQFP2

5

2

220

1

1

1

11—17 7—12

352-Pin PBGA

5

2

220

1.5

1.5

1.5

7—12

3—6

T T 432-Pin EBGA

4

1.5

500

1

1

0.3

3—5.5 0.5—1

C N LW

RW

PAD N

LE O LMW CM

LL

C1

LML

CIRCUIT

BOARD PAD

C2

E C PADN+1

S ISLW

RW

LL

D C1

C2

5-3862(F).r2

Figure 53. Package Parasitics

130

Lattice Semiconductor

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