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| 型号： | MC9S08LL16CGT |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, QCC48 |
| 封装： | ROHS COMPLIANT, TQFN-48 |
| 文件页数： | 3/44页 |
| 文件大小： | 951K |
| 代理商： | MC9S08LL16CGT |
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Electrical Characteristics
MC9S08LL16 Series MCU Data Sheet, Rev. 6
Freescale Semiconductor
11
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 JA)
Eqn. 3-1
where:
TA = Ambient temperature, C
JA = 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 + 273C)
Eqn. 3-2
Solving Equation 3-1 and Equation 3-2 for K gives:
K = PD (TA + 273C) + JA (PD)
2
Eqn. 3-3
Table 5. Thermal Characteristics
Rating
Symbol
Value
Unit
Operating temperature range
(packaged)
TA
TL to TH
–40 to 85
C
Maximum junction temperature
TJM
95
C
Thermal resistance
Single-layer board
64-pin LQFP
JA
72
C/W
48-pin QFN
84
48-pin LQFP
81
Thermal resistance
Four-layer board
64-pin LQFP
JA
54
C/W
48-pin QFN
30
48-pin LQFP
57
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相关代理商/技术参数 |
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|---|---|
| MC9S08LL16CLF | 功能描述:8位微控制器 -MCU 8BIT16KFLASH 2KRAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| MC9S08LL16CLF | 制造商:Freescale Semiconductor 功能描述:IC 8BIT MCU HCS08 20MHZ LQFP-48 |
| MC9S08LL16CLFR | 制造商:Freescale Semiconductor 功能描述:8-BIT HCS08 CISC 16KB FLASH 2.5V/3.3V 48-PIN LQFP T/R - Tape and Reel |
| MC9S08LL16CLH | 功能描述:8位微控制器 -MCU 8BIT 16KFLASH 2KRAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| MC9S08LL36 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Technical Data |
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