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MPC8358E bảng dữ liệu(PDF) 85 Page - Freescale Semiconductor, Inc |
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MPC8358E bảng dữ liệu(HTML) 85 Page - Freescale Semiconductor, Inc |
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85 / 96 page ![]() MPC8358E PowerQUICC™ II Pro Processor Revision 2.1 PBGA Silicon Hardware Specifications, Rev. 1 Freescale Semiconductor 85 Thermal 4. Insert the chosen SPMF, COREPLL, CEPMF and CEPDF to the RCWL fields respectively. Example: • To configure the device with CSB clock rate of 266 MHz, core rate of 400 MHz, and QUICC Engine clock rate 300 MHz while the input clock rate is 33 MHz. Conf No. “s10” and “c1” are selected from Table 74. SPMF is “1000,” CORPLL is “0000011,” CEPMF is “01001,” and CEPDF is “0.” 23 Thermal This section describes the thermal specifications of the MPC8358E. 23.1 Thermal Characteristics Table 75 provides the package thermal characteristics for the 668 29 mm x 29 mm PBGA package. SPMF CORE PLL CEPMF CEPDF Input Clock (MHz) CSB Freq (MHz) Core Freq (MHz) QUICC Engine Freq (MHz) 400 (MHz) 1000 0000011 01001 0 33 266 400 300 ∞ Table 75. Package Thermal Characteristics for the PBGA Package Characteristic Symbol Value Unit Notes Junction-to-ambient Natural Convection on single layer board (1s) RθJA 20 °C/W 1, 2 Junction-to-ambient Natural Convection on four layer board (2s2p) RθJA 14 °C/W 1, 2, 3 Junction-to-ambient (@1 m/s) on single layer board (1s) RθJMA 15 °C/W 1, 3 Junction-to-ambient (@ 1 m/s) on four layer board (2s2p) RθJMA 11 °C/W 1, 3 Junction-to-board thermal RθJB 6°C/W 4 Junction-to-case thermal RθJC 4°C/W 5 |
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