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TL16C452TEXASN/a500avaiDual UART with Parallel Port And Without FIFO
TL16C452FNN/a730avaiDual UART with Parallel Port And Without FIFO
TL16C452FNRTIN/a12avaiDual UART with Parallel Port And Without FIFO
TL16C452FNRG4Pb-freeN/a700avaiDual UART with Parallel Port And Without FIFO 68-PLCC 0 to 70
TL16C452FNRG4PbN/a1000avaiDual UART with Parallel Port And Without FIFO 68-PLCC 0 to 70


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TL16C452-TL16C452FN-TL16C452FNR-TL16C452FNRG4
Dual UART with Parallel Port And Without FIFO
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Centronix Printer Interface
TL16C452 Consists of Two TL16C450s Plus
a Centronix-Type Printer Interface
– 1-, 1 1/2-, or 2 Stop-Bit Generation
– Programmable Baud Rate
(dc to 256 kbit/s)
Fully Double Buffered for Reliable
Asynchronous Operation


description

The TL16C451 and TL16C452 provide single- and dual-channel (respectively) serial interfaces along with a
single Centronix-type parallel-port interface. The serial interfaces provide a serial-to-parallel conversion for data
received from a peripheral device or modem and a parallel-to-serial conversion for data transmitted by a CPU.
The parallel interface provides a bidirectional parallel data port that fully conforms to the requirements for a
Centronix-type printer interface. A CPU can read the status of the asynchronous communications element
(ACE) interfaces at any point in the operation. The status includes the state of the modem signals (CTS, DSR,
RLSD, and RI) and any changes to these signals that have occurred since the last time they were read, the state
of the transmitter and receiver including errors detected on received data, and printer status. The TL16C451
and TL16C452 provide control for modem signals (RTS and DTR), interrupt enables, baud rate programming,
and parallel-port control signals.
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