![]() ![]() ![]() I purchased 93C56 devices from Jameco (nominally $1.00) and these are marked with the manufacturer code CGI and they appear to be like the Microchip devices. This discussion deals specifically with the Microchip 93C56 serial EEPROM. There is some confusion in the industry as National Semiconductor markets a device under the same number (NM93C56A) and the protocol differs slightly from the Microchip series. The programmed memories might then be interfaced with a STAMP, PIC, 68HC11 for such applications as storing an A/D lookup table or various messages This piece discusses how to program such serial EEPROM devices as the 93C46/56/66 using the parallel port. Anderson, Morgan State University Baltimore, MD 21239, Dec, '96 Parallel Port - Programming Serial EEPROM 93C56 Parallel Port - Programming Serial EEPROM 93C56 copyright Peter H.
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