Hello BEN.

18 Aug 04 07:08, you wrote to all:

 BR> I am trying to identify this IC if anyone can help  I need pin-outs
 BR> and a data sheet with app data if possible. :-)

 BR> 40-pin DIP IC on board; pulled from fancy RCA IR Remote Control with
 BR> 74 buttons (yep, counted 'em); 18 wires interfaced board/chip to
 BR> buttons (just the board now, no more buttons); surprisingly few
 BR> supporting components: 1 Crystal, 2 Transistors, 6 Caps (3 Elec.), 1
 BR> Diode (Zener, I think) & 14 Resistors; all contained on a
2" x 3"
 BR> board.


 BR> Chip markings:

 BR>  ////////////////////
 BR> --------------------
 BR> |  (c) 1988  TCE   |
 BR> |   SC403736P      |
 BR> |  1A66100-05B     |    not to scale, of course
 BR> |  (M) 6A58P8915   |/
 BR> --------------------
 BR>  (c) is a "c" in a circle
 BR>  (M) is the Motorola insignia in a circle

I can't find those numbers in my electronic motorola catalogue (it's dated
'93 and your mystery chip looks to have been made in 8915 (late march 1989)

Given that it wasn't for sale to the public then, you've got zero chance of
sourcing one now. I'd guess that It's some sort of mask-programmed
microcontroller.  IOW a custom chip

You may be able to replace the whole device with a pre-programmed generic
remote controi. (you punch in different code depending on the make/model of
the device(s you want to control).

Jasen

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