Solved
Peter BENSCHBest answer
ST Technical Moderator
January 11, 2022
CS561 stands for the ST93CS56M1 which was discontinued many years ago. It was a Microwire EEPROM with 2Kbit in 128x16bit organization, temp range: 0...70°C.
The M93S56-WMN6 can be used as a replacement.
Good luck!
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/Peter
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