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參數(shù)資料
| 型號： | SAK-TC1782-320F180HL |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 180 MHz, RISC MICROCONTROLLER, PQFP176 |
| 封裝： | GREEN, PLASTIC, LQFP-176 |
| 文件頁數(shù)： | 5/113頁 |
| 文件大?。?/td> | 3371K |
| 代理商： | SAK-TC1782-320F180HL |
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TC1782
Electrical ParametersPin Reliability in Overload
Target Data Sheet/ACDC Target Specification 61
V 0.7 Preliminary, 2010-03
1.5
Pin Reliability in Overload
1.5.1
Introduction
When receiving signals from the external world or higher voltage devices, low-voltage
devices experience overload currents and voltages that go beyond their own IO power
supply. In order to design cost-optimized high-reliability systems (close to 0 ppm fail-rate
in the whole lifetime), some design issues must be taken into account. This document
describes these issues. They are relevant only for the overloaded input pins/pins set to
input of the device/application.
There are two types of constraints for an input pad in overload: voltage and current
constraints. At 3.3V low voltage CMOS devices, the voltage constraints are more critical
than the current constraints. The reason for this effect is the thinner Gate Oxide layer at
low-voltage devices. This effect is intrinsic to the Gate Oxide and can not be avoided.
Two general cases are discussed in this document:
full life-time, normal operation, high/room temperature reliability (24000 h)
limited duration, error case, high/room temperature reliability (2400 h)
1.5.1.1
Pin Classes
All TC1782 pins include internal protection diodes connected to power supply voltage
and to ground. However, the voltage/current characteristics differs in case of different
types of pads. There are three classes of GPIO pads, regarding their input
characteristics:
A2 - Strong Driver Pad
A1, and Digital Inputs Only - Low Leakage Pads
LVDS Combo Pads
Generally, the Strong Driver Class has lower protection diode voltage drop than the Low
Leakage Class. This means that Strong Driver pins experience less voltage in overload
then the other pins.
1.5.1.2
External Influences
Apart from the input current, two other factors influence the voltage that will appear on
an input pin in overload: the power supply voltage and the die temperature.
Increasing the power supply voltage directly increases the voltage on all pins in overload.
When power supply voltage would increase from nominal 3.3 V to maximal 3.47 V,
voltage on all overloaded pins would increase for 0.17 V.
When the temperature goes lower, the PN-junction voltage goes higher, provided that
the current remains constant. For the automotive temperature range of -40
oC to +150oC
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| SAK-TC1793N-512F270EF AB | 制造商:Infineon Technologies AG 功能描述: |
| SAK-TC1796-256F150E | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:SK-TC179x Starter Kit |
| SAKTC1796256F150E BC | 功能描述:32位微控制器 - MCU 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 最大時鐘頻率:90 MHz 程序存儲器大小: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 |
| SAK-TC1796-256F150E BC | 功能描述:32位微控制器 - MCU 32-Bit Single-Chip MCU TriCore 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 最大時鐘頻率:90 MHz 程序存儲器大小: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 |
| SAK-TC1796-256F150E BD | 功能描述:32位微控制器 - MCU 32 BIT FLASH 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 最大時鐘頻率:90 MHz 程序存儲器大小: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 |
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