The TL16C450 is a CMOS version of an asynchronous communications element (ACE) that typically functions in a microcomputer system as a serial interface. It features a programmable baud rate generator, full double buffering, addition or deletion of standard asynchronous communication bits (start, stop, and parity), and an independent receiver clock input.
The TL16C450 is a CMOS asynchronous communications element (ACE) designed to function as a serial input/output interface in microcomputer systems. It performs serial-to-parallel conversion for received data and parallel-to-serial conversion for data from the CPU. The device includes a programmable on-board baud rate generator capable of dividing a reference clock by divisors from 1 to (2^16 - 1) to drive internal transmitter and receiver logic.
Key features include full double buffering to eliminate the need for precise synchronization, standard asynchronous communication bits (start, stop, and parity) that can be added or deleted, and independent receiver clock input. The chip offers fully programmable serial interface characteristics, such as 5-, 6-, 7-, or 8-bit characters and various stop bit generation options. It also provides complete status reporting, a fully prioritized interrupt system, and modem control functions including CTS, RTS, DSR, DTR, RI, and DCD.
The device supports baud generation rates from dc to 256 Kbit/s.
The device supports 5-, 6-, 7-, or 8-Bit Characters.
When active (low), DTR informs a modem or data set that the ACE is ready to establish communication.