參數(shù)資料
型號(hào)： MPC7457
廠商： 飛思卡爾半導(dǎo)體(中國(guó))有限公司
英文描述： RISC Microprocessor Hardware Specifications
中文描述： RISC微處理器硬件規(guī)格
文件頁(yè)數(shù)： 58/68頁(yè)
文件大小： 1755K
代理商： MPC7457
MPC7457 RISC Microprocessor Hardware Specifications, Rev. 5
58
Freescale Semiconductor
System Design Information
interface thermal resistance. That is, the bare joint results in a thermal resistance approximately seven times greater
than the thermal grease joint.
Often, heat sinks are attached to the package by means of a spring clip to holes in the printed-circuit board (see
Figure 25
). Therefore, the synthetic grease offers the best thermal performance, considering the low interface
pressure and is recommended due to the high power dissipation of the MPC7457. Of course, the selection of any
thermal interface material depends on many factors—thermal performance requirements, manufacturability, service
temperature, dielectric properties, cost, etc.
Figure 29. Thermal Performance of Select Thermal Interface Material
The board designer can choose between several types of thermal interface. Heat sink adhesive materials should be
selected based on high conductivity, yet adequate mechanical strength to meet equipment shock/vibration
requirements. There are several commercially available thermal interfaces and adhesive materials provided by the
following vendors:
The Bergquist Company
18930 West 78
th
St.
Chanhassen, MN 55317
Internet: www.bergquistcompany.com
Chomerics, Inc.
77 Dragon Ct.
Woburn, MA 01888-4014
Internet: www.chomerics.com
800-347-4572
781-935-4850
0
0.5
1
1.5
2
0
10
20
30
40
50
60
70
80
Silicone Sheet (0.006 in.)
Bare Joint
Floroether Oil Sheet (0.007 in.)
Graphite/Oil Sheet (0.005 in.)
Synthetic Grease
Contact Pressure (psi)
S
2
/
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC7457EC 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:RISC Microprocessor Hardware Specifications
MPC745BPX300LE 功能描述:微處理器 - MPU 255 PBGAREV2.8105C 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
MPC745BPX350LE 功能描述:微處理器 - MPU 255 PBGAREV2.8105C 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
MPC745BVT300LE 功能描述:微處理器 - MPU GF REV2.8105C 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
MPC745BVT350LE 功能描述:微處理器 - MPU GF REV2.8105C 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
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