參數(shù)資料
型號(hào)： MPC755BRX450LE
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 450 MHz, RISC PROCESSOR, CBGA360
封裝： 25 X 25 MM, 3.20 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-360
文件頁(yè)數(shù)： 35/52頁(yè)
文件大?。?/td> 1278K
代理商： MPC755BRX450LE
40
MPC755 RISC Microprocessor Hardware Specifications
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
System Design Information
The QACK signal shown in Figure 24 is usually connected to the PCI bridge chip in a system and is an input
to the MPC755 informing it that it can go into the quiescent state. Under normal operation this occurs during
a low-power mode selection. In order for COP to work, the MPC755 must see this signal asserted (pulled
down). While shown on the COP header, not all emulator products drive this signal. If the product does not,
a pull-down resistor can be populated to assert this signal. Additionally, some emulator products implement
open-drain type outputs and can only drive QACK asserted; for these tools, a pull-up resistor can be
implemented to ensure this signal is deasserted when it is not being driven by the tool. Note that the pull-up
and pull-down resistors on the QACK signal are mutually exclusive and it is never necessary to populate
both in a system. To preserve correct power-down operation, QACK should be merged via logic so that it
also can be driven by the PCI bridge.
1.8.8
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
design—the heat sink, airflow, and thermal interface material. To reduce the die-junction temperature, heat
sinks may be attached to the package by several methods—adhesive, spring clip to holes in the
printed-circuit board or package, and mounting clip and screw assembly; see Figure 25. This spring force
should not exceed 5.5 pounds of force.
Figure 25 describes the package exploded cross-sectional view with several heat sink options.
Figure 25. Package Exploded Cross-Sectional View with Several Heat Sink Options
The board designer can choose between several types of heat sinks to place on the MPC755. There are
several commercially-available heat sinks for the MPC755 provided by the following vendors:
Aavid Thermalloy
603-224-9988
80 Commercial St.
Concord, NH 03301
Internet: www.aavidthermalloy.com
Adhesive
or
Thermal Interface Material
Heat Sink
CBGA Package
Heat Sink
Clip
Printed-Circuit Board
Option
相關(guān)PDF資料
PDF描述
MPC755CPX400 32-BIT, 400 MHz, RISC PROCESSOR, PBGA360
MPC755BVT300 32-BIT, 300 MHz, RISC PROCESSOR, PBGA360
MPC745BVT300 32-BIT, 300 MHz, RISC PROCESSOR, PBGA255
MPC745BVT350 32-BIT, 350 MHz, RISC PROCESSOR, PBGA255
MPC755CRX400 32-BIT, 400 MHz, RISC PROCESSOR, CBGA360
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC755BVT300LE 功能描述:微處理器 - MPU RV2.8106C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC755BVT350LE 功能描述:微處理器 - MPU RV2.8,106C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC755CPX350LE 功能描述:微處理器 - MPU 360PBGA,RV2.8,6W RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC755CPX400LE 功能描述:微處理器 - MPU GF RV2.8360PBGA 4A105C RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324
MPC755CPX400LE 制造商:Freescale Semiconductor 功能描述:IC 32BIT MPU 400MHZ BGA-360
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