參數(shù)資料
型號(hào)： MCF51CN128CGT
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, QCC48
封裝： 7 X 7 MM, 1 MM HEIGHT, 0.50 MM PITCH, MO-220VKKD-2, QFN-48
文件頁(yè)數(shù)： 5/48頁(yè)
文件大?。?/td> 3550K
代理商： MCF51CN128CGT
Electrical Characteristics
MCF51CN128 ColdFire Microcontroller Data Sheet, Rev. 4
Freescale Semiconductor
13
3.4
Thermal Characteristics
This section provides information about operating temperature range, power dissipation, and package thermal resistance. Power
dissipation on I/O pins is usually small compared to the power dissipation in on-chip logic and voltage regulator circuits, and
it is user-determined rather than being controlled by the MCU design. To take PI/O into account in power calculations, determine
the difference between actual pin voltage and VSS or VDD and multiply by the pin current for each I/O pin. Except in cases of
unusually high pin current (heavy loads), the difference between pin voltage and VSS or VDD will be very small.
The average chip-junction temperature (TJ) in °C can be obtained from:
TJ = TA + (PD × θJA)
Eqn. 1
where:
TA = Ambient temperature, °C
θJA = Package thermal resistance, junction-to-ambient, °C/W
PD = Pint + PI/O
Pint = IDD × VDD, Watts — chip internal power
PI/O = Power dissipation on input and output pins — user determined
For most applications, PI/O << Pint and can be neglected. An approximate relationship between PD and TJ (if PI/O is neglected)
is:
PD = K ÷ (TJ + 273°C)
Eqn. 2
Solving Equation 1 and Equation 2 for K gives:
K = PD × (TA + 273°C) + θJA × (PD)
2
Eqn. 3
where K is a constant pertaining to the particular part. K can be determined from equation 3 by measuring PD (at equilibrium)
for a known TA. Using this value of K, the values of PD and TJ can be obtained by solving Equation 1 and Equation 2 iteratively
for any value of TA.
Table 5. Thermal Characteristics
Rating
Symbol
Value
Unit
Operating temperature range
(packaged)
TA
TL to TH
(–40 to 85 or 0 to 70)1
1 Depending on device.
°C
Maximum junction temperature
TJM
95
°C
Thermal resistance
Single-layer board
48-pin QFN
θ
JA
81
°C/W
64-pin LQFP
69
80-pin LQFP
60
Thermal resistance
Four-layer board
48-pin QFN
θ
JA
26
°C/W
64-pin LQFP
50
80-pin LQFP
47
相關(guān)PDF資料
PDF描述
MCF51CN128CLK 32-BIT, FLASH, 50.33 MHz, MICROCONTROLLER, PQFP80
MCF52277CVM166 32-BIT, 166.67 MHz, RISC PROCESSOR, PBGA196
MCF5249LPV120 32-BIT, 120 MHz, RISC PROCESSOR, PQFP144
MCF5251VM140 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225
MCF5251CVM140 32-BIT, 140 MHz, MICROPROCESSOR, PBGA225
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCF51CN128CL 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MCF51CN128CLH 功能描述:32位微控制器 - MCU 32-Bit 128K Flash w/ On-Chip Ethernet RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
MCF51CN128CLH 制造商:Freescale Semiconductor 功能描述:IC 32BIT MCU COLDFIRE 50.33MHZ LQFP64
MCF51CN128CLK 功能描述:32位微控制器 - MCU 32-Bit 128K Flash w/ On-Chip Ethernet RoHS:否 制造商:Texas Instruments 核心:C28x 處理器系列:TMS320F28x 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:90 MHz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:26 KB 片上 ADC:Yes 工作電源電壓:2.97 V to 3.63 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:LQFP-80 安裝風(fēng)格:SMD/SMT
MCF51CN128CLK 制造商:Freescale Semiconductor 功能描述:IC 32BIT MCU COLDFIRE 50.33MHZ LQFP80
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