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Andy Neil
11/14/11 15:02
  11/14/11 17:17

Read: 426 times

#184739 - In general
Responding to: Andy Peters's previous message
Andy Peters said:
UART: "Universal Asynchronous Receiver/Transmitter."

You may also see "USART" (though not so common with 8051) - which is Universal Synchronous/Asynchronous Receiver/Transmitter

Andy Peters said:
The "0" and "1" in "UART0" and "UART1" are meant to distinguish the two UARTs that are present in some micros

Some also have UART2, UART3, etc,...

In general, when a device has multiple peripherals of the same type, they will be identified as Peripheral-0, Peripheral-1, etc..


  • a "standard" 8051 has four IO ports - called "Port-0", "Port-1", "Port-2", and "Port-3"

  • a "standard" 8051 has two timers - called "Timer-0", "Timer-1" - and the 8052 added a third called, naturally, "Timer-2"

  • etc, etc,...

  • List of 6 messages in thread
    Definition of a UART?      Jacob Drake      11/14/11 12:41      
       re: Definition      Andy Peters      11/14/11 12:49      
          Thanks      Jacob Drake      11/14/11 12:58      
          In general      Andy Neil      11/14/11 15:02      
             silliness      Andy Peters      11/15/11 12:41      
                It's the product of decades of imprecise nomenclature      Richard Erlacher      11/16/11 18:53      

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