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Does anyone have the programming protocol to the GAL22? I know the chip is old. In the late 80s, Xilinx had the protocol in their databooks, but they removed it in the 90s.
Dallas Semiconductors/Maxim (**broken link removed**) also has other greater RTCs. Some of them are serial w/ onboard EEPROM or parallel in combination w/ a few kB of SRAM.
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