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): 10/113頁
文件大?。?/td> 3371K
代理商: SAK-TC1782-320F180HL
TC1782
Electrical ParametersPin Reliability in Overload
Target Data Sheet/ACDC Target Specification 66
V 0.7 Preliminary, 2010-03
Last Step 4 consists of multiplying the reliability with the corresponding number of pins
and summing the results. In this case:
Reliability [ppm] = 0.00017*10+0.01*5+0.03*4 =
= 0.0017
+0.05 + 0.12 = ca. 0.17 ppm
This calculation is done for 3.3 V nominal power supply, at 125
oC. If the upper maximum
power supply voltage of 3,47 V is taken into account, then 0.17 V should be added to the
overload voltages in Step 2. The corresponding number would not correspond to the
statistical reality, because most of the power supplies do not supply the maximum upper
limit voltage (see General Recommendations - Section 1.5.1.3).
Figure 20
Graphical Representation of the Calculation Process
The Figure 20 illustrates the concept behind the calculation. Starting point is the
overload current, and the ending point is the ppm rate. The total overload voltage on a
pin is a sum of the port supply voltage and the voltage of the protection diode in overload.
A1
14
50%
0,01
5
A2
13.78
50%
0,00017
10
Table 39
Step 3
Class
Current
[mA]
Voltage
[V]
Duration
[lifetime%]
Reliability
[ppm]
No. of
Pins
3.7V
0V
VIN [V]
ppm
I [mA]
0.5
1
2
3
1.5
2.5
U [V]
0.4
0.5
0.6
0.7
0.8
0.9
3.8
3.9
4.0
4.1
4.2
4.3
1
0.1
0.01
0.001
125 oC
50% duty cycle
A2 Pads
Others
Tj=125 oC
Start
End
Overload
Current
0.0001
<125 oC
A2 Pads
3.3V
5%
+-
VDDP=
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