28F640L30, 28F128L30, 28F256L30
Figure 40. Mechanical Specification for the 256-Mbit; 79-Ball VF BGA Package Drawing and
Dimensions
S1
A1 Index
Mark
A1 Index
Mark
D
1 2
3
4
5
6
7 8 9
10 11 1213
8
1312 11 10
9
7
6 5 4 3 2 1
S2
A
A
B
B
C
D
C
D
E
E
E
F
F
G
G
e
b
Top View - Ball Side Down
Bottom View - Ball Side Up
A1
A2
A
Seating
Plane
Y
Side View
Drawing not to scale
Dimensions Table
Millimeters
Nom
Inches
Nom
Dimensions
Symbol
Min
Max Notes
Min
Max
Package Height
Ball Height
A
A1
A2
b
D
E
e
N
Y
S1
S2
1.000
0.0394
0.150
0.0059
Package Body Thickness
Ball (Lead) Width
Package Body Length
Package Body Width
Pitch
Ball (Lead) Count
Seating Plane Coplanarity
Corner to Ball A1 Distance Along D
Corner to Ball A1 Distance Along E
0.665
0.375
11.000
9.000
0.750
79
0.0262
0.0148
0.4331
0.3543
0.0295
79
0.325
10.900
8.900
0.425
11.100
9.100
0.0128
0.4291
0.3504
0.0167
0.4370
0.3583
(256Mb)
(256Mb)
0.100
1.100
2.350
0.0039
0.0433
0.0925
0.900
2.150
1.000
2.250
0.0354
0.0846
0.0394
0.0886
94
Datasheet
INTEL [ INTEL ]
