Universal synchronous and asynchronous receiver-transmitter: Difference between revisions

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|Zilog
|"SIO" Z8440–4/Z84C40–4
|Serial communicationsinput/output controller
|Zilog #ps0183, Z8440/1/2/3/4 and Z84C40/1/2/3/4 data sheet<ref name="zilog_com-ps0183">{{cite web|title=Zilog Product specification Z8440/1/2/4, Z84C40/1/2/3/4. Serial input/output controller|url=http://www.zilog.com/docs/z80/ps0183.pdf}} 090529 zilog.com</ref>
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