PC16552D Datasheet (National Semiconductor) - Dual Universal Asynchronous Receiver/Transmitter with FIFOs

PC16552D, Dual Universal Asynchronous Receiver/Transmitter with FIFOs

The PC16552D is a dual version of the PC16550D Universal Asynchronous Receiver Transmitter (UART) The two serial channels are completely independent except for a common CPU interface and crystal input On power-up both channels are functionally identical to the 16450 Each channel can operate with on-

PC16552D Features

* Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Dual independent UARTs Capable of running all existing 16450 and PC16550D software After reset all registers are identical to the 16450 register set Read and write cycle times of 84 ns In the FIFO mode transmitter and receiver are each buffered with 16-by