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MPC755 датащи(PDF) 32 Page - Motorola, Inc |
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MPC755 датащи(HTML) 32 Page - Motorola, Inc |
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32 / 56 page ![]() MPC755 RISC Microprocessor Hardware Specifications, Rev. 6.1 32 Freescale Semiconductor Package Description 7.2 Mechanical Dimensions for the MPC745 PBGA Figure 18 provides the mechanical dimensions and bottom surface nomenclature for the MPC745, 255 PBGA package. Figure 18. Mechanical Dimensions and Bottom Surface Nomenclature for the MPC745, 255 PBGA Package NOTES: 1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994. 2. DIMENSIONS IN MILLIMETERS. 3. TOP SIDE A1 CORNER INDEX IS A METALIZED FEATURE WITH VARIOUS SHAPES. BOTTOM SIDE A1 CORNER IS DESIGNATED WITH A BALL MISSING FROM THE ARRAY. 4. CAPACITOR PADS MAY BE UNPOPULATED. Millimeters DIM Min Max A 2.25 2.80 A1 0.50 0.70 A2 1.00 1.20 A3 — 0.60 b 0.60 0.90 D 21.00 BSC D1 6.75 E 21.00 BSC E1 7.87 e 1.27 BSC 0.2 D 2X A1 CORNER E 0.2 B A C 0.2 C B C 255X e 123456789 10 11 12 13 14 15 16 A B C D E F G H J K L M N P R T A 0.3 C 0.15 b E1 D1 A A1 A2 A3 |
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