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Michael Engel /
npub1qr3…h5my
2023-08-31 15:52:19
in reply to nevent1q…8s88

Michael Engel on Nostr: npub13levf…s6saf The 6309 PROM requires two different programming voltages – 27 V ...

npub13levfmuj9uu5gy4mhh0tg5nkujqujkyky8220rd0dkwpm4p950eqss6saf (npub13le…6saf) The 6309 PROM requires two different programming voltages – 27 V on the programming pin and 20 V on the output pin (see p. 11 of http://www.applelogic.org/files/6309PROM.pdf). It seems that the TL866 is unable to supply these voltages – the maximum is 18 V according to the manual https://www.hadex.cz/spec/m545b.pdf (this reminds me that I have to start digging for my old EPROMers...).
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