Which 8155 or 8255 to use ?

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??? 11/22/02 21:08 Read: times	#32972 - Which 8155 or 8255 to use ?
	Hi! I like to know which 81C55 or 81C55-1... should be used in 24Mhz 89C52 system. I used simple 81C55 but it is not working above 20Mhz speed. Also tell me which 8255 can be used. like 8255-2 or 8255-4 etc. and how much is there speed (or access time). Thanks!

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Topic Author Date
Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00
RE: Which 8155 or 8255 to use ?              01/01/70 00:00

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Topic	Author	Date
*Which 8155 or 8255 to use ?*		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00
RE: Which 8155 or 8255 to use ?		01/01/70 00:00