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The DS80C390 is a microcontroller whose architecture is derived from that of the Intel 8051 processor series, introduced by Dallas Semiconductor (now part of Maxim Integrated Products). It features an increased code memory address space of twenty-two bits, as opposed to the sixteen bit space of the original 8051 processor. It also includes two Controller Area Network (CAN) controllers and a 32-bit integer coprocessor. The open-source Small Device C Compiler (SDCC) supports the processor. It was used in the initial version of the Tiny Internet Interface (TINI) processor module where it was superseded by the DS80C400, a processor that also incorporates an Ethernet port.