IC TC5504P

I recently found some old IC's of the type TC5504P. I found out that it's a
4kx1 SRAM of Toshiba which was produced in the eighties, but wasn't able to
find any data*** for this IC.
I wrote to Toshiba but they answered that the data*** is no longer
available.
Are there any similar datasheets online I could use, or could you give me
some information about the usage of this part on another way?
Otherwise, how can I figure out the pin connections?

Thanks in advance
Thomas




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