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ST16C1451

Exar Corporation
Part Number ST16C1451
Manufacturer Exar Corporation
Description (ST16C1450 / ST16C1451) 2.97V TO 5.5V UART
Published Sep 21, 2005
Detailed Description áç OCTOBER 2003 ST16C1450/51 2.97V TO 5.5V UART REV. 4.2.0 GENERAL DESCRIPTION The ST16C1450, ST16C1451 series (here o...
Datasheet PDF File ST16C1451 PDF File

ST16C1451
ST16C1451

Overview
áç OCTOBER 2003 ST16C1450/51 2.
97V TO 5.
5V UART REV.
4.
2.
0 GENERAL DESCRIPTION The ST16C1450, ST16C1451 series (here on denoted as the 145X) is a universal asynchronous receiver and transmitter (UART).
The 145X is foot print compatible to the SSI 73M1550 and SSI 73M2550 UART with one byte FIFO and higher operating speed and lower access time.
The 145X provides enhanced UART functions with a modem control interface, independent programmable baud rate generators with clock rates to 1.
5 Mbps.
Onboard status registers provide the user with error indications and operational status.
System interrupts and modem control features may be tailored by external software to meet specific user requirements.
An internal loopback capability allows onboard diagnostics.
The 145X is available in a 28-pin PLCC/plastic-DIP , 48-pin TQFP packages.
The Baud rate generator can be configured for either crystal or external clock input with the exception of the 28 pin 1451 package.
An external clock must be provided for the 28 pin 1451 package.
Each package type, with the exception of the 28 pin 1450, provides a buffered reset output that can be controlled through user software.
The 145X is fabricated in an advanced CMOS process to achieve low drain power and high speed requirements.
The ST16C145X is not compatible with the industry standard 16450 and will not work with the standard serial port driver in MS Windows (see pages 15-16 for details).
For a MS Windows compatible UART, see the ST16C450.
FEATURES • Pin and functionally compatible to SSI 73M1550/ 2550 • 1 byte Transmit FIFO (THR) • 1 byte Receive FIFO with error tags (RHR) • Four levels of prioritized interrupts • Modem Control Signals (CTS#, RTS#, DSR#, DTR#, RI#, CD#) • Programmable character lengths (5, 6, 7, 8) with even, odd or no parity • Crystal or external clock input (except 28 pin ST16C1451, external clock only) • 1.
5 Mbps Transmit/Receive operation (24 MHz) with programmable clock control • Power Down Mode (50 uA at...


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