UM8250

SUMO -============ UM82450/ UM8250 fl~ AsynchroEnleomusenCt o(AmCmEu)nication Feature Adds or deletes standard asynchronous communication bits (Start, Stop, and Parity) to or from serial data stream Full double buffering eliminates need for precise synchronization Independently controlled transmit, receive, line status, and data set interrupts ( Programmable baud rate generator allows division of any input clock by 1 to (2 16 - 1) and generates the internal 16x clock Independent receiver clock input Modem control functions (CTS, RTS, DSR, DTR, RI, and carrier detect) Single +5 volt power supply General Description UM82450 and UM8250 are programmable Asynchronous Communication Element (ACE) chips fabricated with Si -Gate NMOS process. The UM82450 is an improved specification version of the UM8250. These two products perform serial-to-parallel conversion on data characters received from the CPU. The CPU can read the complete Fully program...