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IP82C50A-5 Datasheet(PDF) 1 Page - Intersil Corporation |
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IP82C50A-5 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 21 page 1 March 1997 82C50A CMOS Asynchronous Communications Element Features • Single Chip UART/BRG • DC to 625K Baud (DC to 10MHz Clock) • Crystal or External Clock Input • On Chip Baud Rate Generator 1 to 65535 Divisor Generates 16X Clock • Prioritized Interrupt Mode • Fully TTL/CMOS Compatible • Microprocessor Bus Oriented Interface • 80C86/80C88 Compatible • Scaled SAJI IV CMOS Process • Low Power - 1mA/MHz Typical • Modem Interface • Line Break Generation and Detection • Loopback and Echo Modes • Doubled Buffered Transmitter and Receiver • Single 5V Supply Description The 82C50A Asynchronous Communication Element (ACE) is a high performance programmable Universal Asynchro- nous Receiver/Transmitter (UART) and Baud Rate Genera- tor (BRG) on a single chip. Using Intersil’s advanced Scaled SAJI IV CMOS Process, the ACE will support data rates from DC to 625K baud (0-10MHz clock). The ACE’s receiver circuitry converts start, data, stop, and parity bits into a parallel data word. The transmitter circuitry converts a parallel data word into serial form and appends the start, parity, and stop bits. The word length is program- mable to 5, 6, 7, or 8 data bits. Stop bit selection provides a choice of 1,1.5, or 2 stop bits. The Baud Rate Generator divides the clock by a divisor programmable from 1 to 216-1 to provide standard RS-232C baud rates when using any one of three industry standard baud rate crystals (1.8432MHz, 2.4576MHz, or 3.072MHz). A programmable buffered clock output (BAUDOUT) provides either a buffered oscillator or 16X (16 times the data rate) baud rate clock for general purpose system use. To meet the system requirements of a CPU interfacing to an asynchronous channel, the modem control signals RTS, CTS, DSR, DTR, RI, DCD are provided. Inputs and outputs have been designed with full TTL/CMOS compatibility in order to facilitate mixed TTL/NMOS/CMOS system design. Functional Diagram Ordering Information PACKAGE TEMPERATURE RANGE (oC) 625K BAUD PKG. NO. PDIP 0 to +70 CP82C50A-5 E40.6 -40 to +85 IP82C50A-5 E40.6 PLCC 0 to +70 CS82C50A-5 N44.65 -40 to +85 IS82C50A-5 N44.65 CERDIP 0 to +70 CD82C50A-5 F40.6 -40 to +85 ID82C50A-5 F40.6 -55 to +125 MD82C50A-5/B F40.6 D0 D1 D2 D3 D4 D5 D6 D7 1 2 3 4 5 6 7 8 A0 A1 A2 MR DISTR DISTR DOSTR DOSTR 28 27 26 35 22 21 19 18 CSO CS1 CS2 12 13 14 ADS 25 MICROPROCESSOR INTERFACE INTERRUPT ENABLE, ID, & CONTROL 30 INTRPT 23 DDIS 24 CSOUT 10 SIN UART MODEM DIVISOR LATCH AND BAUD RATE GENERATOR MODEM CONTROL MODEM STATUS RECEIVER TRANSMITTER 9 RCLK 16 XTAL1 15 BAUDOUT 17 XTAL2 11 SOUT 32 RTS 33 DTR 34 OUT1 31 OUT2 36 CTS 37 DSR 38 DCD 39 RI LINE STATUS AND CONTROL File Number 2958.1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999 |
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