ST16C452数据手册集成电路（IC）的UART（通用异步接收器发送器）规格书PDF

描述 Description

The ST16C452/ST16C452PS (452/452PS) is a dual universal asynchronous receiver and transmitter (UART) with an added bi-directional parallel port that is directly compatible with a CENTRONICS type printer. The parallel port is designed such that the user can configure it as general purpose I/O interface, or for connection to other printer devices.
The 452/452PS provides enhanced UART functions, a modem control interface, and data rates up to 1.5Mbps. Onboard status registers provide the user with error indications and operational status. The system interrupts and control may be tailored to meet user requirements. An internal loop-back capability allows onboard diagnostics. A programmable baud rate generator is provided to select transmit and receive clock rates from 50 bps to 1.5 Mbps.
The 452/452PS is available in a 68 pin PLCC package. The 452/452PS is compatible with the 16C450. The 452 is available in two versions, the ST16C452 and the ST16C452PS. The ST16C452 provides single hardware pin to control the printer port data direction while the 452PS provides an additionally software control bit to control the printer port data direction to become compatible PS/2 operating system. The 452/452PS is fabricated in an advanced CMOS process with low power consumption.
For UART technical support or to obtain an IBIS model for this product, please email Exar's UART Technical Support group.

特性 Features

·Pin to pin and functional compatible to TL16C452·Software compatible with ST16C450, NS16C450·1.5 Mbps transmit/receive operation (24MHz)·Independent transmit and receive control·Modem and printer status registers·UART port and printer port Bi-directional·Printer port direction set by single control bit or 8 bit pattern (AA/55)·Modem control signals (-CTS, -RTS, -DSR, -DTR, -RI, -CD)·Programmable character lengths (5, 6, 7, 8)·Even, odd, or no parity bit generation and detection·Internal loop-back diagnostics·TTL compatible inputs, outputs·Low Power·Pb-Free, RoHS Compliant Versions Offered

应用 Application

·Parallel Printer Port