- 您现在的位置：买卖IC网 > PDF目录4081 > MPC8308ZQAFD (Freescale Semiconductor)MPU POWERQUICC II PRO 473MAPBGA PDF资料下载
参数资料
| 型号： | MPC8308ZQAFD |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 74/83页 |
| 文件大小： | 0K |
| 描述： | MPU POWERQUICC II PRO 473MAPBGA |
| 标准包装： | 84 |
| 系列： | MPC83xx |
| 处理器类型： | 32-位 MPC83xx PowerQUICC II Pro |
| 速度： | 333MHz |
| 电压： | 1V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 473-LFBGA |
| 供应商设备封装： | 473-MAPBGA（19x19） |
| 包装： | 托盘 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页当前第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
76
Freescale Semiconductor
Thermal
appropriate for a tightly packed printed-circuit board. The value obtained on the board with the internal
planes is usually appropriate if the board has low power dissipation and the components are well separated.
Test cases have demonstrated that errors of a factor of two (in the quantity TJ – TA) are possible.
22.2.2
Estimation of Junction Temperature with Junction-to-Board
Thermal Resistance
The thermal performance of a device cannot be adequately predicted from the junction-to-ambient thermal
resistance. The thermal performance of any component is strongly dependent on the power dissipation of
surrounding components. In addition, the ambient temperature varies widely within the application. For
many natural convection and especially closed box applications, the board temperature at the perimeter
(edge) of the package is approximately the same as the local air temperature near the device. Specifying
the local ambient conditions explicitly as the board temperature provides a more precise description of the
local ambient conditions that determine the temperature of the device.
At a known board temperature, the junction temperature is estimated using the following equation:
TJ = TB + (RJB PD)
where:
TJ = junction temperature (C)
TB = board temperature at the package perimeter (C)
RJB = junction-to-board thermal resistance (C/W) per JESD51–8
PD = power dissipation in the package (W)
When the heat loss from the package case to the air can be ignored, acceptable predictions of junction
temperature can be made. The application board should be similar to the thermal test condition: the
component is soldered to a board with internal planes.
22.2.3
Experimental Determination of Junction Temperature
To determine the junction temperature of the device in the application after prototypes are available, the
thermal characterization parameter (
JT) can be used to determine the junction temperature with a
measurement of the temperature at the top center of the package case using the following equation:
TJ = TT + (JT PD)
where:
TJ = junction temperature (C)
TT = thermocouple temperature on top of package (C)
JT = thermal characterization parameter (C/W)
PD = power dissipation in the package (W)
The thermal characterization parameter is measured per JESD51-2 specification using a 40 gauge type T
thermocouple epoxied to the top center of the package case. The thermocouple should be positioned so
that the thermocouple junction rests on the package. A small amount of epoxy is placed over the
thermocouple junction and over about 1 mm of wire extending from the junction. The thermocouple wire
is placed flat against the package case to avoid measurement errors caused by cooling effects of the
thermocouple wire.
相关PDF资料 |
PDF描述 |
|---|---|
| AMM43DRMI-S288 | CONN EDGECARD 86POS .156 EXTEND |
| AMM43DRMT | CONN EDGECARD 86POS .156 WW |
| IDT7024L20PFGI8 | IC SRAM 64KBIT 20NS 100TQFP |
| MPC8306CVMACDCA | IC PROCESSOR E300 369MAPBGA |
| MPC8309VMADDCA | IC PROCESSOR E300 489MAPBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8308ZQAFDA | 功能描述:微处理器 - MPU E300 MP Pb 333 RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MPC8308ZQAGD | 功能描述:微处理器 - MPU E300 MP Pb 400 RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MPC8308ZQAGDA | 功能描述:微处理器 - MPU E300 MP Pb 400 RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| MPC8309 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC II Pro Processors |
| MPC8309CVMADDC | 制造商:Freescale Semiconductor 功能描述:E300 MP EXT TMP 266 - Trays |
发布紧急采购，3分钟左右您将得到回复。