6821 (was Re: 6522 vs 6526)

From: Ethan Dicks (ethan_dicks_at_yahoo.com)
Date: 2002-02-27 08:23:03

--- Spiro Trikaliotis <trik-news@gmx.de> wrote:
> Ethan Dicks wrote:
> 
> > If anyone is interested, I have a number of NOS (New Old Stock) 6821 chips
> 
> the original motorola where labeled the following way:
> 
> - MC6821  is 1   MHz
> - MC68A21 is 1.5 MHz
> - MC68B21 is 2   MHz

I have a few tubes of Motorola 6821P (1MHz) and a few tubes of Fairchild 6821
(no designator).

Thanks for the tip.

-ethan


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