Hi nicomunet123, Maybe upd79f9211 is a custom product, the datasheet has not been published in Renesas web. I found out the datasheet www.datasheet.jp/.../UPD79F9211-pdf.html , but it is Chinese version. According to the datasheet, upd79f9211 is 44pin of 78K0R/Ix3(78K0R/IC3) custom chip. In the chinese web store, upd79f9211 seem to be selling as X8M06. But I do not know it is true.
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