DatasheetsPDF.com

ST16C650A Dataheets PDF



Part Number ST16C650A
Manufacturers Exar Corporation
Logo Exar Corporation
Description 2.90V TO 5.5V UART WITH 32-BYTE FIFO
Datasheet ST16C650A DatasheetST16C650A Datasheet (PDF)

áç JANUARY 2004 ST16C650A 2.90V TO 5.5V UART WITH 32-BYTE FIFO REV. 5.0.0 GENERAL DESCRIPTION The ST16C650A1 (650A) is a 2.90 to 5.5 volt Universal Asynchronous Receiver and Transmitter (UART) with 5 volt tolerant inputs. This device supports Intel and PC ISA mode data bus interfaces and is software compatible to industry standard 16C450, 16C550, ST16C580 and ST16C650A UARTs. The 650A has 32 bytes of TX and RX FIFOs and is capable of operating up to serial data rates of 3.125 Mbps at 5 volt su.

  ST16C650A   ST16C650A



Document
áç JANUARY 2004 ST16C650A 2.90V TO 5.5V UART WITH 32-BYTE FIFO REV. 5.0.0 GENERAL DESCRIPTION The ST16C650A1 (650A) is a 2.90 to 5.5 volt Universal Asynchronous Receiver and Transmitter (UART) with 5 volt tolerant inputs. This device supports Intel and PC ISA mode data bus interfaces and is software compatible to industry standard 16C450, 16C550, ST16C580 and ST16C650A UARTs. The 650A has 32 bytes of TX and RX FIFOs and is capable of operating up to serial data rates of 3.125 Mbps at 5 volt supply voltage. The internal registers include the 16C550 register set plus Exar’s enhanced registers for additional features to support today’s highly demanding data communication needs. The enhanced features include automatic hardware and software flow control, selectable TX and RX trigger levels, and wireless infrared (IrDA) encoder/decoder. The device provides a new capability to give user the ability to program the wireless infrared encoder output pulse width, hence reducing the power consumption of a handheld unit. The ST16C650A device comes in the 44-pin PLCC and 48-pin TQFP packages in both the commercial and industrial temperature ranges. NOTE: 1 Covered by US patents #5,649,122. FEATURES Added features in top mark date code of "HC YYWW" and newer: s s s s s s s 2.90 to 5.5 Volt Operation 5 Volt Tolerant Inputs Automatic RS485 Half-Duplex Control Output Programmable Infrared Encoder Pulse Width Sleep Mode with Wake-up Indicator Device ID & Revision Up to 3.125 Mbps Data Rate at 5 Volts Added feature in top mark date code of "I2 YYWW" and newer: s 0 ns address hold time • Intel or PC Mode 8-bit Bus Interface • 32-byte Transmit and Receive FIFOs • Automatic Hardware (RTS/CTS) Flow Control • Hardware Flow Control Hysteresis • Automatic Software (Xon/Xoff) Flow Control APPLICATIONS • Battery Operated Electronics • Handheld Terminal • Personal Digital Assistants • Cellular Phones DataPort • Wireless Infrared Data Communications Systems FIGURE 1. BLOCK DIAGRAM RESET 32 Byte TX FIFO A2:A0 Transmitter D7:D0 IOR# IOR IOW# IOW CS2# CS1 CS0 INT TXRDY# RDRDY# DDIS# BRG Prescaler SEL S1 S2 S3 IRQA IRQB IRQC Baud Rate Generator PC Mode: COM 1 to 4 Decode Logic XTAL1/CLK XTAL2 Intel, Motorola or PC Data Bus Interface UART Configuration Regs CTS Flow Control Modem Control Signals RTS Flow Control DTR#, DSR#, RTS#, CTS#, CD#, RI# Infrared Encoder and Pulse Width Control TX Infrared Decoder RX Receiver with Auto Software Flow Control 32 Byte RX FIFO Crystal Osc/Buffer Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com ST16C650A 2.90V TO 5.5V UART WITH 32-BYTE FIFO FIGURE 2. INTEL AND PC MODE PIN OUT 48-TQFP PACKAGE DSR# CTS# VCC N.C. CD# N.C. RI# D4 D3 D2 D1 D0 áç REV. 5.0.0 44-PLCC PACKAGE DSR# 41 CTS# 40 39 38 37 36 35 VCC N.C. CD# 42 RI# 43 D4 D3 D2 D1 D0 48 47 46 45 44 43 42 41 40 39 38 37 N.C. D5 D6 D7 RCLK N.C. RX TX CS0 CS1 -CS2 -BAUDOUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 SEL RESET D5 D6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 44 6 5 4 3 2 1 RESET OP1# DTR# RTS# OP2# SEL INT RXRDY# A0 A1 A2 OP1# D7 DTR# RTS# OP2# INT RXRDY# A0 A1 A2 N.C. RCLK RX N.C. TX CS0 CS1 CS2# BAUDOUT# ST16C650ACQ48 Intel Bus Mode (SEL = VCC) 31 30 29 28 27 26 25 ST16C650ACJ44 Intel Bus Mode (SEL = VCC) 34 33 32 31 30 29 GND IOR XTAL1 CLKSEL XTAL2 IOW# N.C. TXRDY# IOW IOR# DDIS# AS# DDIS# TXRDY# XTAL1 XTAL2 IOW# N.C. IOR# IOW GND DSR# 41 DSR# CTS# VCC N.C. CD# RI# D4 D3 D2 D1 D0 A9 44 43 42 48 47 46 45 44 43 42 41 40 39 38 37 D5 N.C. D5 D6 D7 S2 A4 RX TX A5 A6 A7 LPT1# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 36 35 34 33 32 SEL 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 40 39 38 37 36 35 6 5 4 3 2 1 CTS# VCC CD# RI# D4 D3 D2 D1 D0 A9 AS# IOR RESET OP1# DTR# RTS# S3 SEL IRQA IRQB A0 A1 A2 D6 RESET OP1# DTR# RTS# S3 IRQA IRQB A0 D7 S2 RX A4 TX A5 A6 ST16C650ACQ48 PC Mode (SEL = GND) 31 30 29 28 27 26 25 ST16C650ACJ44 PC Mode (SEL = GND) 34 33 32 31 30 29 A1 A2 N.C. A7 LPT1# IOW# A8 XTAL1 XTAL2 LPT2# IOW# IOR# A3 IRQC IOR# A8 XTAL1 XTAL2 40-PDIP PACKAGE RXRDY# TXRDY# RESET DDIS# DSR# DTR# OP1# OP2# CTS# RTS# 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 ST16C650ACP40 10 11 12 13 14 15 16 17 18 19 BAUDOUT# XTAL1 XTAL2 RCLK IOW# CS2# CS0 CS1 RX IOW 2 GND D0 D1 D2 D3 D4 D5 D6 D7 TX 20 1 2 3 4 5 6 7 8 9 21 IOR# VCC CD# AS# IOR INT RI# A0 A1 A2 AEN# GND N.C. LPT2# AEN# S1 S1 IRQC GND A3 áç REV. 5.0.0 ST16C650A 2.90V TO 5.5V UART WITH 32-BYTE FIFO ORDERING INFORMATION PART NUMBER ST16C650ACP40 ST16C650ACJ44 ST16C650ACQ48 ST16C650AIP40 ST16C650AIJ44 ST16C650AIQ48 PACKAGE 40-Lead PDIP 44-Lead PLCC 48-Lead TQFP 40-Lead PDIP 44-Lead PLCC 48-Lead TQFP OPERATING TE.


ST16C654 ST16C650A ST16C580


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)