M24256-A STMicroelectronics, M24256-A Datasheet - Page 18

• Manufacturer Part Number: M24256-A
• Description: 256 Kbit Serial I C Bus EEPROM With Two Chip Enable Lines
• Manufacturer: STMicroelectronics

M24256-A
Table 16. SBGA7 - 7 ball Shell Ball Grid Array
Note: 1. No ball is closer than D2 to any other ball, thus giving an arrangement of equilateral triangles in which:
Figure 15. SBGA7 (EA) – Underside view (ball side)
Note: 1. Drawing is not to scale.
18/20
Symb.
D2
FD
E1 = D2/2 ; E2 = D2 ; E3 = 3xD2/2
D3 = 3xD2/2 ; D1 = D2 + 3xD2/2
A1
FE
A
D
E
N
b
1
0.430
0.180
0.350
3.555
1.000
2.275
1.278
0.388
Typ.
D
BALL ”1”
b
0.380
0.150
0.320
3.525
0.970
2.245
A
Min.
mm
—
—
7
E3
E
E2
0.480
0.210
0.380
3.585
1.030
2.305
Max.
E1
—
—
FE
A1
D3
D2
0.017
0.007
0.014
0.140
0.039
0.090
0.050
0.015
Typ.
FD
D1
SBGA-01
inches
0.015
0.006
0.013
0.138
0.038
0.088
Min.
—
—
7
0.019
0.008
0.015
0.142
0.041
0.091
Max.
—
—