參數(shù)資料
型號: PC7447
廠商: Atmel Corp.
英文描述: PowerPC 7457 RISC Microprocessor
中文描述: 7457的PowerPC RISC微處理器
文件頁數(shù): 49/66頁
文件大?。?/td> 522K
代理商: PC7447
49
PC7457/47 [Preliminary]
5345B–HIREL–02/04
Mechanical Dimensions for the PC7457, 483 CBGA
Figure 25 provides the mechanical dimensions and bottom surface nomenclature for the PC7457, 483 CBGA package.
Figure 29.
Mechanical Dimensions and Bottom Surface Nomenclature for the PC7457, 483 CBGA Package
Notes:
1. Dimensioning and tolerancing per ASME Y14.5M, 1994
2. Dimensions in millimeters
3. Top side A1 corner index is a metallized feature with various shapes. Bottom side. A1 corner is designated with a ball miss-
ing from the array
C
A
483X
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
B
0.3
C
0.15
b
U
W
V
Y
AB
1 2 3 4 5 6 7 8 910111213141516171819202122
Capacitor Region
A
0.15 A
0.35 A
A
A1
A2
A3
DIM
A
A1
A2
A3
b
D
D1
D2
D3
D4
e
E
E1
E2
E3
E4
Millimeters
MIN
2.72
0.80
1.10
0.82
29 BSC
8.5
10.9
1.27 BSC
29 BSC
8.5
9.55
MAX
3.20
1
1.30
0.6
0.93
12.5
8.4
11.1
12.5
8.4
9.75
0.2
2X
C
A1 CORNER
B
0.2
2X
D
E
E3
E2
E1
E4
D2
D4
D3
D1
1
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