Date:    19970329
From:    Shoomsky Gennady
To:      Multiple recipients of list CHIPDIR-L
Subject: Re: identification uon SU Chips

Hi Jan,

here is an information that you're looking for:

>   P 556PT4A   (Dil 16 package, name written as printed on chip)

256x4 70ns TTLS OTP EPROM with OC outputs. Crosses to i3601.

pin    func        pin    func
------------------------------
 1      A6          9      D3
 2      A5         10      D2
 3      A4         11      D1
 4      A3         12      D0
 5      A0         13    /CS1
 6      A1         14    /CS2
 7      A2         15      A7
 8      GND        16     +5V

-----
Gennady
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