DS80C390

The DS80C390 is a microcontroller, introduced by Dallas Semiconductor, whose architecture is derived from that of the Intel MCS-51 processor series. It contains a code memory address space of twenty-two bits. It also contains two Controller Area Network controllers and a 32-bit integer coprocessor.
The open-source Small Device C Compiler supports the processor. It was used in the initial version of the Tiny Internet Interface processor module where it was superseded by the DS80C400, a processor that also incorporates an Ethernet port.