Each of these parts function as a serial data input/output interface in a microcomputer system. The system software determines the functional configuration of the UART via a TRI-STATE® 8-bit bidirectional data bus. The UART performs serial-to-parallel conversion on data characters received from a peripheral device or a MODEM, and parallel-to-serial conversio.
■ Easily interfaces to most popular microprocessors.
■ Adds or deletes standard asynchronous communication
bits (start, stop, and parity) to or from serial data stream.
■ Holding and shift registers eliminate the need for pre cise synchronization between the CPU and the serial data.
■ Independently controlled transmit, receive, line status, and data set interrupts.
■ Programmable baud generator allows division of any in put clock by 1 to (216 - 1) and generates the internal 16 x clock.
■ Independent receiver clock input.
■ MODEM control functions (CTS, RTS, DSR, DTR, Rl,
and DCD).
■ Fully pr.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | INS8250-B |
National Semiconductor |
Asynchronous Receiver/Transmitter | |
2 | INS8250A |
National Semiconductor |
UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER | |
3 | INS8251 |
National Semiconductor |
Programmable Communication Interface | |
4 | INS8253 |
National Semiconductor |
Programmable Interval Timer | |
5 | INS8254 |
National Semiconductor |
N-Channel Bit Programmable Peripherallnterface | |
6 | INS8255 |
National Semiconductor |
Programmable Peripheral Interface | |
7 | INS8255N |
National Semiconductor |
Programmable Peripheral Interface | |
8 | INS8257 |
National Semiconductor |
Programmable DMA Controller | |
9 | INS8259 |
National Semiconductor |
Programmable Interrupt Controller | |
10 | INS8202 |
National Semiconductor |
Octal Buffers | |
11 | INS8203 |
National Semiconductor |
Octal Buffers | |
12 | INS8208 |
National Semiconductor |
8-Bit Bidirectional Transceiver |