Author Topic: TSOP in circuit reading tsop test clips  (Read 4868 times)

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Offline nandmanTopic starter

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TSOP in circuit reading tsop test clips
« on: April 25, 2015, 12:15:58 am »
Does anyone know if you can read a tsop in circuit?

Many sites say you can not but I see people selling tsop test clips to read tsops in circuit.

just wondering ???
 

Offline tggzzz

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Re: TSOP in circuit reading tsop test clips
« Reply #1 on: April 25, 2015, 09:00:25 am »
Does anyone know if you can read a tsop in circuit?

Many sites say you can not but I see people selling tsop test clips to read tsops in circuit.

just wondering ???

Links?
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline nandmanTopic starter

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Re: TSOP in circuit reading tsop test clips
« Reply #2 on: April 25, 2015, 10:45:28 pm »
Does anyone know if you can read a tsop in circuit?

Many sites say you can not but I see people selling tsop test clips to read tsops in circuit.

just wondering ???

Links?

Well I was looking at the Pomona test clips and the emulation.com test clips

http://www.amazon.com/Pomona-5514-SOIC-Clip-Test/dp/B005T617VQ

https://www.emulation.com/catalog/off-the-shelf_solutions/debugging_accessories/test_clips/tsop_test_clips/
 

Offline ManateeMafia

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Re: TSOP in circuit reading tsop test clips
« Reply #3 on: April 25, 2015, 10:51:54 pm »
Are you asking if you can read a device like an (e)eprom in-circuit?

 

Offline mikeselectricstuff

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Re: TSOP in circuit reading tsop test clips
« Reply #4 on: April 25, 2015, 11:56:48 pm »
It depends entirely on the nature of the circuitry in the system it's used in.
You may be lucky and the system might tristate its address bus & control lines when held in reset.
Or you may be able to force enough current to override the address drivers.
Or maybe not.
TSOPS are easy to desolder, so using a normal socket is going to be the most reliable way.
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 

Offline mikeselectricstuff

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Re: TSOP in circuit reading tsop test clips
« Reply #5 on: April 25, 2015, 11:59:12 pm »
Does anyone know if you can read a tsop in circuit?

Many sites say you can not but I see people selling tsop test clips to read tsops in circuit.

just wondering ???

Links?

Well I was looking at the Pomona test clips and the emulation.com test clips

http://www.amazon.com/Pomona-5514-SOIC-Clip-Test/dp/B005T617VQ

https://www.emulation.com/catalog/off-the-shelf_solutions/debugging_accessories/test_clips/tsop_test_clips/
What makes you think these have anything to do with programming?
The clue is in the name : test clip
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 

Offline nandmanTopic starter

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Re: TSOP in circuit reading tsop test clips
« Reply #6 on: April 26, 2015, 03:35:23 am »
Does anyone know if you can read a tsop in circuit?

Many sites say you can not but I see people selling tsop test clips to read tsops in circuit.

just wondering ???

Links?

Well I was looking at the Pomona test clips and the emulation.com test clips

http://www.amazon.com/Pomona-5514-SOIC-Clip-Test/dp/B005T617VQ

https://www.emulation.com/catalog/off-the-shelf_solutions/debugging_accessories/test_clips/tsop_test_clips/
What makes you think these have anything to do with programming?
The clue is in the name : test clip

How do we locate and use the tristate? I have seen tristate mentioned when using the test clip.  something about connecting tristate to ground.
 

Offline tggzzz

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Re: TSOP in circuit reading tsop test clips
« Reply #7 on: April 26, 2015, 07:42:18 am »
How do we locate and use the tristate? I have seen tristate mentioned when using the test clip.  something about connecting tristate to ground.

If you don't understand how the UUT is supposed to work, then having any testclip whatsoever is a waste of time - and may damage the UUT.

Applying inappropriate signals will damage something on the board. If you are lucky it will stop working immediately. If you are unlucky it will survive long just enough to have entered service.
There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
Having fun doing more, with less
 

Offline mikeselectricstuff

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Re: TSOP in circuit reading tsop test clips
« Reply #8 on: April 26, 2015, 09:01:46 am »
Does anyone know if you can read a tsop in circuit?

Many sites say you can not but I see people selling tsop test clips to read tsops in circuit.

just wondering ???

Links?

Well I was looking at the Pomona test clips and the emulation.com test clips

http://www.amazon.com/Pomona-5514-SOIC-Clip-Test/dp/B005T617VQ

https://www.emulation.com/catalog/off-the-shelf_solutions/debugging_accessories/test_clips/tsop_test_clips/
What makes you think these have anything to do with programming?
The clue is in the name : test clip

How do we locate and use the tristate? I have seen tristate mentioned when using the test clip.  something about connecting tristate to ground.
Like I said, it will depend entirely on the rest of the system.
Youtube channel:Taking wierd stuff apart. Very apart.
Mike's Electric Stuff: High voltage, vintage electronics etc.
Day Job: Mostly LEDs
 


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