EEPROM ST 950406 replacement

Tom6 · ‎2024-10-31

Hi,

any help or information to find the data sheet and to determine an available replacement type for an obsolete EEPROM chip from ST marked 950406 would be highly appreciated.

A picture of the chip is attached.

The defective EEPROM chip 950406 comes from a Landis & Staefa heating controller, year of manufacture of the controller was +- 2002.

Thanks in advance and best regards.

Tesla DeLorean · ‎2024-10-31

ST95040M6TR SOP8

EEPROM 5.5V 4K (512x8)

https://community.st.com/t5/other-hardware/hi-i-don-t-want-to-know-if-the-95042u3-is-simply-an-95040-i-don/td-p/210432

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Peter BENSCH · ‎2024-11-01

@Tom6 You could try the M95040-RMN6TP or the M95040-FMN6TP. The ST950406 can only be operated with 5V, but the alternatives can be operated from 1.7V or 1.8V up to and including 5V.

Hope that helps?

Good luck!
/Peter

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