I really need to change the memory retention battery in my 4808. What I intend is to use a small floating PSU with a blocking diode to supply just under the battery voltage to the memory circuit, then unsolder and replace the battery.
However mistakes do happen, so does anyone know of a way to read the contents of the Calibration RAM (and to restore in case of disaster)? Has anyone ever been down the FRAM route? The existing RAM is a TC5564PL (8k x 8) so a FM1608 may well work fine... Thanks Dave Partridge _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
