參數(shù)資料
型號: MSC8144EC
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數(shù)字信號處理
英文描述: 0-BIT, 133 MHz, OTHER DSP, PBGA783
封裝: 29 X 29 MM, PLASTIC, FCBGA-783
文件頁數(shù): 21/80頁
文件大小: 1239K
代理商: MSC8144EC
MSC8144EC Quad Core Digital Signal Processor Data Sheet, Rev. 10
Electrical Characteristics
Freescale Semiconductor
28
2.3
Default Output Driver Characteristics
Table 4 provides information on the characteristics of the output driver strengths.
Table 5 describes thermal characteristics of the MSC8144EC for the FC-PBGA packages.
Table 4. Output Drive Impedance
Driver Type
Output Impedance (
Ω)
DDR signal
18
DDR2 signal
18
35 (half strength mode)
Table 5. Thermal Characteristics for the MSC8144EC
Characteristic
Symbol
FC-PBGA
29
× 29 mm5
Unit
Natural
Convection
200 ft/min
(1 m/s) airflow
Junction-to-ambient1, 2
RθJA
20
15
°C/W
Junction-to-ambient, four-layer board1, 3
RθJA
15
12
°C/W
Junction-to-board (bottom)4
RθJB
7
°C/W
Junction-to-case5
RθJC
0.8
°C/W
Notes:
1.
Junction temperature is a function of die size, 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.
2.
Per JEDEC JESD51-2 with the single layer board (JESD51-3) horizontal.
3.
Per JEDEC JESD51-6 with the board (JESD51-7) horizontal.
4.
Thermal resistance between the die and the printed circuit board per JEDEC JESD 51-8. Board temperature is measured on
the top surface of the board near the package.
5.
Thermal resistance between the active surface of the die and the case top surface determined by the cold plate method (MIL
SPEC-883 Method 1012.1) with the calculated case temperature.
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