TL16C450_09 Datasheet, PDF (2/27 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT

TL16C450
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS037C − MARCH 1988 − REVISED JANUARY 2006
description
The TL16C450 is a CMOS version of an asynchronous communications element (ACE). It typically functions
in a microcomputer system as a serial input/output interface.
The TL16C450 performs serial-to-parallel conversion on data received from a peripheral device or modem and
parallel-to-serial conversion on data received from its CPU. The CPU can read and report on the status of the
ACE at any point in the ACE’s operation. Reported status information includes the type of transfer operation
in progress, the status of the operation, and any error conditions encountered.
The TL16C450 ACE includes a programmable, on-board, baud rate generator. This generator is capable of
dividing a reference clock input by divisors from 1 to (2¹⁶ −1) and producing a 16× clock for driving the internal
transmitter logic. Provisions are included to use this 16 × clock to drive the receiver logic. Also included in the
ACE is a complete modem control capability and a processor interrupt system that may be software tailored
to the user’s requirements to minimize the computing required to handle the communications link.
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