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参数资料
| 型号： | MPC8280ZUBX |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 66 MHz, RISC PROCESSOR, PBGA480 |
| 封装： | 37.5 X 37.5 MM, 1.55 MM, 1.27 MM PITCH, TBGA-480 |
| 文件页数： | 4/83页 |
| 文件大小： | 618K |
| 代理商： | MPC8280ZUBX |
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MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 2
12
Freescale Semiconductor
Thermal Characteristics
4
Thermal Characteristics
This table describes thermal characteristics for both the packages. See Table 2 for information on a given
SoC’s package. Discussions of each characteristic are provided in Section 4.1, “Estimation with
Junction-to-Ambient Thermal Resistance,” and Section 4.5, “Experimental Determination.” For the these
discussions, PD =(VDD × IDD) + PI/O, where PI/O is the power dissipation of the I/O drivers.
4.1
Estimation with Junction-to-Ambient Thermal Resistance
An estimation of the chip junction temperature, T
J, in
C can be obtained from the following equation:
TJ = TA + (RθJA × PD)
where:
TA = ambient temperature (C)
RθJA = package junction-to-ambient thermal resistance (C/W)
PD = power dissipation in package
The junction-to-ambient thermal resistance is an industry standard value that provides a quick and easy
estimation of thermal performance. However, the answer is only an estimate; test cases have demonstrated
that errors of a factor of two (in the quantity TJ – TA) are possible.
4 V
IL for IIC interface does not match IIC standard, but does meet IIC standard for VOL and should not cause any compatibility
issue.
5 MPC8280, MPC8275VR, MPC8275ZQ only.
Table 6. Thermal Characteristics
Characteristic
Symbol
Value
Unit
Air Flow
480 TBGA
516 PBGA
Junction to ambient—
single-layer board1
1 Assumes no thermal vias
RθJA
16
27
°C/W
Natural convection
11
21
1 m/s
Junction to ambient—
four-layer board
RθJA
12
19
°C/W
Natural convection
916
1 m/s
Junction to board2
2 Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on
the top surface of the board near the package.
RθJB
611
°C/W
—
Junction to case3
3 Thermal resistance between the die and the case top surface as measured by the cold plate method (MIL SPEC-883 Method
1012.1).
RθJC
28
°C/W
—
Junction-to-package top4
4 Thermal characterization parameter indicating the temperature difference between package top and the junction temperature
per JEDEC JESD51-2. When Greek letters are not available, the thermal characterization parameter is written as Psi-JT.
Ψ
JT
22
°C/W
—
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPC8280ZUE | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications |
| MPC8280ZUI | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications |
| MPC8280ZUM | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications |
| MPC8280ZUP | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:PowerQUICC II⑩ Family Hardware Specifications |
| MPC8280ZUQLDA | 功能描述:微处理器 - MPU PQ II HIP 7 REV A 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 |
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