I don't want to source a new IC - "datasheet" in the title was probably sufficient clue for most people!TV remotes normally use a cheap microcontroller as the only chip. They print whatever number they like on it. Occasionally you can even tell which micro brand they are from the pinout and the way the xtal is connected.
It's very unlikely that you can source a new IC.
Thanks for the link.Are you certain about the part number?.... it seems like it's one of the SAA series from the late 1980s/early 90s, but it doesn't seem to be listed in Philips data 'bible' from that time -- which you can find here :
http://archive.org/details/PhilipsSemiconductorsRadioAudioBipolarMosCa3089ToTda1510aDataHandbook
That includes SAA numbers above and below that one......
Like numerous other 'SAA3018(P)' links - it leads to the SAA3010 datasheet.
There's no need to be rude! I've worked in TV repair over thirty years and just might be saying something useful.I don't want to source a new IC - "datasheet" in the title was probably sufficient clue for most people!
With an SAA prefix, it could well be a uC - but the SAA3xxx family of remote control chips were very much off the shelf items.There's no need to be rude! I've worked in TV repair over thirty years and just might be saying something useful.
The highest likelyhood is that it is a microcontroller. Which means you won't get a datasheet.
The SAA3xxx are not all the same chip with arbitrary firmware - I have several datasheets upto SAA3010 - the SAA3018 datasheet remains elusive.Yep, some "off the shelf" numbered ICs in TVs are micros anyway. Manufacturers would have their own marked numbers on programmed micros, and even have them available from suppliers that sell to the TV repair industry. Sometimes they use the same micro, with different marked numbers to show different firmware was inside.
I assumed you were not an expert? If you have "years in the trade" why can't you fix the remote?...
Most of the remote controller chip manufacturers I encountered in my years in the trade,
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I assumed you could read - I've already stated that the PCB with 3 layers of resist has been wet, blistered and peeled, the top layer of resist insulates track-bridging overlay, which is now gone - making it impossible to trace the circuit.I assumed you were not an expert? If you have "years in the trade" why can't you fix the remote?
They almost universally have matrixed keypads on X number of pins, IR LED driven from one pin via a transistor, and 2 power pins and 2 xtal pins. That's ALL the pins.
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What help was that then?!You really are rude. How is that working out for you?
With all your expertise I'm sure you can fix your own problems from now on, you sure won't be getting any more help from me.