The difference between PIC16F886-I/SS and PIC16F886-E/SS on a parameter

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lixiaoqing
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2012/07/17 19:28:50 (permalink)
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The difference between PIC16F886-I/SS and PIC16F886-E/SS on a parameter

Who can help me to check the difference between PIC16F886-I/SS and PIC16F886-E/SS on the parameter Ambient Temperature under bias, because they are not clearly defined in the datasheet. If you can help to explain the actual meaning of the parameter, i will be more thankful for you.
Similarly, the difference between 24LC64-I/SN and 24LC64-E/SN on the Ambient Temperature with Power Applied are not clearly given in their datasheets.
Thanks a lot before i has got the anwser.
post edited by lixiaoqing - 2012/10/29 01:39:24
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    lixiaoqing
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    Re:Please help me confirm the parameter about PIC16F886-I/SS 2012/10/29 01:31:04 (permalink)
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    Activate the message myself, thanks
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    Ian.M
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    Re:Please help me confirm the parameter about PIC16F886-I/SS 2012/10/29 02:02:52 (permalink)
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    Why do you think there should be a difference?
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    lixiaoqing
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    Re:Please help me confirm the parameter about PIC16F886-I/SS 2012/10/29 02:24:53 (permalink)
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    Because there is the difference on the operating temperature, as writen in the datasheet, the PIC16F886-I/SS is -40~85C and the PIC16F886-E/SS is -40~125C, so i think their Ambient Temperature under bias may also be different. How do you think?
    On the other hand, what is the difference between the Operating temperature and Ambient temperature under bias?
    Thanks in advance.
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    Ian.M
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    Re:Please help me confirm the parameter about PIC16F886-I/SS 2012/10/29 02:46:29 (permalink)
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    Max Ambient temperature under bias is the highest temperature that it is permitted to power the chip at  without immediate risk of damage.  Correct operation at this point is unlikely and you will probably have to cool the chip to its permitted operating temperature range and cycle power before it will recover. You might even have to reprogram it!
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    lixiaoqing
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    Re:Please help me confirm the parameter about PIC16F886-I/SS 2012/10/29 03:39:58 (permalink)
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    Thanks.
                              Ambient temperature under bias           Operating temperature
    PIC16F886-I/SS     -40~125C                                         -40~85C
    PIC16F886-E/SS    -40~125C                                         -40~125C
    So, Is the description above right?
    #6
    Ian.M
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    Re:Please help me confirm the parameter about PIC16F886-I/SS 2012/10/29 06:23:16 (permalink)
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    Yes, but see datasheet section 17.6.  Depending on the loads the PIC is driving, you may have to derate these temperatures further. 
    #7
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