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High temperature part suggestion
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RoGeorge:

--- Quote from: ali_asadzadeh on December 11, 2019, 09:12:06 am ---Guy thanks for the answers, But why panic so much! :) somebody out there has done it, And I'm a professional too, do not worry I can do it too! I managed to find almost 95% of the parts that I needed including passives, ADC, MCU,Flash,RTC and osilator, my main problem for now is the RAM, I have found some parts, But I do not want to limit my choices to only a single source!
The MCU has only 32KB of internal RAM so either I should find a way to compress the DATA or find an external SRAM (I prefer SPI, But I'm fine with the parallel bus too)

This is the RAM
https://www.voragotech.com/products/hs512k16
Though I wonder how it should be used, all the pins seems to short on the outer frame! should I cut it out? any other source for the RAM is highly appreciated. I do not want to limit my choices to a single manufacturer.

--- End quote ---
;D

If you seen the request for such a device in some auction job, just be careful what contract you sign, and how much damage you will pay if your device won't meet the specs and the deadline.  It's obvious you had no idea what you are trying to do, and chances you can build that in time are zero.  Find some other less demanding product to build.  Please don't get this as offensive, it is just a realistic evaluation.  Good luck anyway.
T3sl4co1l:

--- Quote from: mzzj on December 11, 2019, 10:57:18 am ---Good luck sourcing the parts if you live in Iran. Most of them are probably under one or another export limitation.

--- End quote ---

I wouldn't be surprised actually, if discussing this topic violates most others countries' embargo/sanction laws. :(

Tim
ali_asadzadeh:

--- Quote ---If you seen the request for such a device in some auction job, just be careful what contract you sign, and how much damage you will pay if your device won't meet the specs and the deadline.  It's obvious you had no idea what you are trying to do, and chances you can build that in time are zero.  Find some other less demanding product to build.  Please don't get this as offensive, it is just a realistic evaluation.  Good luck anyway.
--- End quote ---

Actually I can build it, ;) the problem for now is beating the hell out of the pricey parts! :palm:
DBecker:

--- Quote from: ali_asadzadeh on December 11, 2019, 09:12:06 am ---
This is the RAM
https://www.voragotech.com/products/hs512k16
Though I wonder how it should be used, all the pins seems to short on the outer frame! should I cut it out?

--- End quote ---

Errrrmmm, is that a legitimate question?  Or a troll?  For operation at 170C ambient you'll be using highly specialized assembly techniques.  Most customers will be bonding directly to a bare die mounted on an inorganic substrate, or putting the encapsulated part into a cavity and welding the leads.  If welding they want the intact lead frame, before bending and trimming.



fcb:
Batteries are available toat least 270C (but probably not in Iran).  Regulators will typically have thermal shutdown at 155C so probably roll your own.

I've got pucker thermal chambers for -65C to +125C (-85F to 257F), and a small Memmert oven that goes to over 200C (or so it says on the knob) - just fired it up to see what it'll get to - will see what happens to the following parts at temperature:

PIC micro controller (probably an 18F something or other) running an on-board ADC, spitting out serial.
AA or AAA cells (bog standard)
LiIon 18650 - standard COTS

Will film this for YT and see what happens (got a fire extinguisher...), watch this space  :scared:
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