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MPC852TZT66 Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc |
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MPC852TZT66 Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc |
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6 / 80 page  MPC852T Hardware Specifications, Rev. 3.1 6 Freescale Semiconductor Power Dissipation 5 Power Dissipation Table4 provides power dissipation information. The modes are 1:1, where CPU and bus speeds are equal, and 2:1 mode, where CPU frequency is twice bus speed. Table 3. MPC852T Thermal Resistance Data Rating Environment Symbol Value Unit Junction to ambient 1 1 Junction temperature is a function of on-chip power dissipation, package thermal resistance, mounting site (board) temperature, ambient temperature, air flow, power dissipation of other components on the board, and board thermal resistance. Natural convection Single layer board (1s) R JA 2 2 Per SEMI G38-87 and JEDEC JESD51-2 with the single layer board horizontal 49 °C/W Four layer board (2s2p)R JMA 3 3 Per JEDEC JESD51-6 with the board horizontal 32 Air flow (200 ft/min) Single layer board (1s)R JMA 3 41 Four layer board (2s2p)R JMA 3 29 Junction to board 4 4 Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on the top surface of the board near the package. R JB 24 Junction to case 5 5 Indicates the average thermal resistance between the die and the case top surface as measured by the cold plate method (MIL SPEC-883 Method 1012.1) with the cold plate temperature used for the case temperature. For exposed pad packages where the pad would be expected to be soldered, junction to case thermal resistance is a simulated value from the junction to the exposed pad without contact resistance. R JC 13 Junction to package top 6 6 Thermal characterization parameter indicating the temperature difference between package top and the junction temperature per JEDEC JESD51-2 Natural convection JT 3 Air flow (200 ft/min) JT 2 Table 4. Power Dissipation (PD) Die Revision Bus Mode Frequency (MHz) Typical 1 1 Typical power dissipation is measured at 1.9 V. Maximum 2 Unit 0 1:1 50 110 140 mW 66 150 180 mW 2:1 66 140 160 mW 80 170 200 mW 100 210 250 mW |
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Similar Description - MPC852TZT66 |
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