參數(shù)資料
型號(hào)： MC8640THX1000HC
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1000 MHz, MICROPROCESSOR, CBGA1023
封裝： 33 X 33 MM, CERAMIC, FCBGA-1023
文件頁數(shù)： 19/130頁
文件大小： 1495K
代理商： MC8640THX1000HC
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
115
Thermal
Ideality factor is defined as the deviation from the ideal diode equation:
Another useful equation is:
Where:
Ifw = Forward current
Is = Saturation current
Vd = Voltage at diode
Vf = Voltage forward biased
VH = Diode voltage while IH is flowing
VL = Diode voltage while IL is flowing
IH = Larger diode bias current
IL = Smaller diode bias current
q
= Charge of electron (1.6 x 10 –19 C)
n
= Ideality factor (normally 1.0)
K = Boltzman’s constant (1.38 x 10–23 Joules/K)
T = Temperature (Kelvins)
The ratio of IH to IL is usually selected to be 10:1. The above simplifies to the following:
Solving for T, the equation becomes:
Ifw = Is e
– 1
qVf
___
nKT
VH – VL = n
ln
KT
__
q
IH
__
IL
VH – VL = 1.986 × 10
–4 × nT
nT =
VH – VL
__________
1.986
× 10–4
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC8640THX1000N 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications
MC8640THX1000NC 功能描述:微處理器 - MPU G8 REV2.1 0.95V -40/105C 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
MC8640THX1067H 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications Addendum for the MC8640xTxxyyyyaC Series
MC8640THX1067N 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Integrated Host Processor Hardware Specifications Addendum for the MC8640xTxxyyyyaC Series
MC8640THX1067NC 功能描述:微處理器 - MPU G8,REV2.1,0.95V,-40 105C 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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