參數(shù)資料
型號(hào)： MPE603RRX300LX
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 300 MHz, RISC PROCESSOR, CBGA255
封裝： 21 X 21 MM, 3 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-255
文件頁(yè)數(shù)： 15/28頁(yè)
文件大?。?/td> 418K
代理商： MPE603RRX300LX
22
EC603e Microprocessor Hardware Specifications (PID7t), Rev. 2.0
MOTOROLA
In addition, the PID7t has three open-drain style outputs that require pull-up resistors (weak or stronger:
4.7 K
W10 KW) if they are used by the system. These signals areAPE, DPE, and CKSTP_OUT.
During inactive periods on the bus, the address and transfer attributes on the bus are not driven by any master
and may oat in the high-impedance state for relatively long periods of time. Since the PID7t must
continually monitor these signals for snooping, this oat condition may cause excessive power draw by the
input receivers on the PID7t. It is recommended that these signals be pulled up through weak (10 K
W) pull-
up resistors or restored in some manner by the system. The snooped address and transfer attribute inputs
areA[031], AP[03], TT[04], TBST, and GBL.
The data bus input receivers are normally turned off when no read operation is in progress and do not require
pull-up resistors on the data bus.
1.8.6 Thermal Management Information
This section provides thermal management information for the ceramic ball grid array (CBGA) package for
air-cooled applications. Proper thermal control design is primarily dependent upon the system-level
designthe heat sink, airow and thermal interface material. To reduce the die-junction temperature, heat
sinks may be attached to the package by several methodsadhesive, spring clip to holes in the printed-
circuit board or package, and mounting clip and screw assembly (CBGA package); see Figure 12. This
spring force should not exceed 5.5 pounds of force.
Figure 12. Package Exploded Cross-Sectional View with Several Heat Sink Options
Adhesive
or
Thermal Interface Material
Heat Sink
CBGA Package
Heat Sink
Clip
Printed-Circuit Board
Option
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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