interface brochure UARTs transceivers

Transcription

1 interface brochure interface brochure UARTs transceivers

2 Interface :: UARTs As the market leader in providing Universal Asynchronous Receiver and Transmitter (UART) solutions, Exar Corporation offers the broadest line of patented industry-proven product families. Exar s product line ranges from cost-effective industry-standard devices to high-performance multi-channel UARTs with a broad range of FIFO depths. Exar s stand-alone, off-the-shelf UART solutions reduce development time and provide an immediate competitive advantage in time-to-market and performance capabilities. Traditional 8-bit UARTs provide parallel-to-serial or serial-to-parallel data conversion over industry standard asynchronous communication data interfaces such as RS-232, RS-422 and RS-485. In addition to the 8-bit UART family, Exar also offers a PCI UART family and an I²C/SPI UART family. Exar UARTs are found in consumer, industrial, telecommunication, and many other applications. Features and Capabilities Low Voltage Operation Exar offers low voltage UART product families that are capable of operating down to 1.62V. The lower operating power supply range is well suited for battery operated systems and handheld devices. Industry Lowest Power Consumption Exar s enhanced UARTs are low power devices. In addition, the devices feature sleep and Power Save modes for further power saving as low as 5 ua in sleep mode and 500uA in active mode. Fastest Data Rates At 16Mbps, Exar offers the industry s fastest UARTs. In addition, slower and lower cost crystals and oscillators can be used to generate higher data rates with Exar s 8X and 4X sampling rate features. Fractional Baud Rate Generator Exar s Fractional Baud Rate Generator feature allows more fl exibility for the designer in selecting a crystal or oscillator since it can take any clock source to generate the standard legacy baud rates or any custom baud rates. matic Flow Control Exar s enhanced UARTs offer auto RTS/CTS hardware and software fl ow control that prevent data loss and the need for re-transmission. RS-485 Half-Duplex Direction Control with mable Turn-Around Delay Exar is the fi rst to introduce this unique feature that supports 2-wire EIA-485 half-duplex communication, it eliminates complicated software coding. Pin-to-Pin Migration Path Exar offers a migration path from legacy UART devices to enhanced high performance devices by maintaining pin-to-pin compatibility whenever possible. This minimizes hardware and software changes and reduces time-to-market. Small Packages Exar UARTs are currently offered in packages that are as small as 4mm x 4mm for space constrained applications without sacrifi cing any functionality and performance. I²C and SPI Bus Exar also offers UARTs with 2-wire (I²C) and 4-wire (SPI) interfaces to easily add additional functionality and value to any embedded system design. UARTs with Integrated Transceivers Exar offers UART with integrated RS-232 or RS-485 transceiver combos in a single small footprint QFN package ideal for simplifying designs and using less board space. PCI Bus In addition to the 8-bit data bus UARTs, Exar offers UART product families with 33MHz and 66MHz PCI bus interfaces. FIFO Exar offers devices with 1 to 128-Bytes of FIFOs with programmable trigger levels and FIFO level counters. Larger FIFO sizes allow increased data throughput by loading and unloading more data per transaction. Larger FIFOs improve the performace reducing the number of interrupts. Wireless UART Exar s 900MHz Wireless UART chipset consists of a Wireless UART controller and 900MHz RF Transceiver. The Wireless UART controller has an 8051 embedded MCU, 32KB system memory, 128-bit AES engine and Exar s proprietary fi rmware. The RF Transceiver has extensive hardware support such as RSSI, ED, LQI and CRC detection, for insuring data integrity in a noisy environment. Together, the Wireless UART chipset eliminates the serial cable. UART and Tranceiver Combination Overview 2

3 2-Channel UART Package Migration Chart S/W and Pin Compatible Upgrade 1-Channel UART Package Migration Chart S/W and Pin Compatible Upgrade 3

4 4-Channel and 8-Channel UART Package Migration Chart S/W and Pin Compatible Upgrade PCI UART Package Migration Chart S/W and Pin Compatible Upgrade 4

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7 Interface :: Transceivers :: RS-232 Key Features and Capabilities Robust Electrostatic Discharge (ESD) Protection Exar uses state of the art structures to protect the transceiver pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown and powered down. After an ESD event, the transceivers keep working without latch-up or damage. ESD protection can be tested in various ways. The transmitter outputs and receiver inputs are characterized for protection to the following limits: ±15kV using the Human Body Model ±8kV using the Contact Discharge method specifi ed in IEC ±15kV using the Air-Gap Discharge method specifi ed in IEC On-line Plus Circuitry The RS-232 transceivers have the advanced On-line Plus feature that saves power by turning off the charge pumps and driver outputs when the transceiver inputs are idle for more than 30 seconds. Highly Efficient Charge Pump The charge pump is used to generate positive and negative signal voltages for the RS-232 drivers. This enables fully compliant RS- 232 and V.28 signals from a single 3.0 or 5.5V power supply. The charge pumps use four external capacitors to hold and transfer electrical charge. The patented designuses a unique approach compared to older less effi cient designs. The pumps use a fourphase voltage shifting technique to attain symmetrical V+ and V- power supplies. An intelligent control oscillator regulates the operation of the charge-pump to maintain the proper voltages at maximum effi ciency. Better Noise Immunity Since receiver input is usually from a transmission line where long cable lengths and system interference can degrade the signal, the inputs have a hysteresis margin of 500mV. This ensures that the receiver is virtually immune to noisy transmission lines. RS-232 Example in HDTV 7

8 Interface :: Transceivers :: RS-422/485 Key Features and Capabilities Robust Electrostatic Discharge (ESD) Protection Similar to the RS-232, Exar uses state of the art structures to protect the transceiver pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown, and powered down. After an ESD event, the transceivers keep working without latch-up or damage. ESD protection can be tested in various ways. The transmitter outputs and receiver inputs are characterized for protection to the following limits: ±15kV using the Human Body Model ±8kV using the Contact Discharge method specifi ed in IEC ±15kV using the Air-Gap Discharge method specifi ed in IEC PROFIBUS PROFIBUS is in wide use in industrial control and automation applications and is ruggedized for use in harsh operating conditions. Higher differential output swing enhances noise immunity and drive longer data cables. 1/8 Unit Load The standard RS-485 receiver input impedance is 12kΩ (1 unit load). A standard driver can drive up to 32 unit loads. The 1/8th unit load receiver input impedance (96kΩ), thereby allowing eight times as many (up to 256) transceivers to be connected in parallel on a communication line. Any combination of these devices and other RS-485 transceivers, up to a total of 32 unit loads, may be connected to the line. Slew Rate Limited Slew Rate drivers minimize Electromagnetic Interference (EMI) and reduce refl ections caused by improperly terminated cables. This allows for error-free data transmission. RS-485 Example in Industrial Controls RS-485 Example in Point of Sale (POS) 8

9 Interface :: Transceivers :: Multiprotocol Key Features and Capabilities Robust Electrostatic Discharge (ESD) Protection Exar uses state of the art structures to protect the multiprotocol transceiver pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown, and powered down. After an ESD event, the transceivers keep working without latch-up or damage. ESD protection can be tested in various ways. The transmitter outputs and receiver inputs are characterized for protection to the following limits: ±15kV using the Human Body Model ±8kV using the Contact Discharge method specifi ed in IEC ±15kV using the Air-Gap Discharge method specifi ed in IEC Industry s ONLY Single Chip Solution Exar is the only one in the industry to offer single chip solutions and correspondingly Exar s solution is 40% smaller than our competitors. Industry s Fastest Chip SP509 is 4X faster than leading competitive solutions. Widest Availability of Protocols RS-232, RS-485, RS-449, EIA-530, V.10, V.11, V.28, V.35, V.36, X.21. Multiprotocol Example in Network Switch Router 9

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11 Additional Information on Key Products Interface :: UART :: 8-Bit Part Number Description Channel CPU Interface Data 5/3.3/2.5/1.8V (Mb/s) XR16L570 Smallest 1.62V to 5.5V UART with 16-Byte FIFO and PowerSave 1 Intel 3.0/2.0/1.5/na No XR16M2750/V2750 High Performance DUART with 64-Byte FIFO 2 XR16M2751/V V to 3.63V High Performance DUART with 64-Byte FIFO 2 XR16V V to 3.6V Quad UART with 64-Byte FIFO 4 XR16V798 High Performance 2.25V to 3.6V Octal UART with Fractional Baud Rate 8 na/8/6.25/na na/8/6.25/na na/16/12.5/na na/8/6.25/na Counters Yes Yes No Yes INT Trigger 4 Levels/ 4 Levels 4 Levels/ 4 Levels RTS/CTS IrDA Support RS-485 5V Tolerant Inputs Supply Voltage (V) Package(s) Yes Yes No Yes QFN-24, QFN-32 Yes Yes Yes Yes PLCC-44, QFN-32, TQFP-48 Yes Yes Yes Yes QFN-32, TQFP-48 Yes Yes No Yes LQFP-64 LQFP-80, PLCC- 68, QFN-48, QFP-100 Yes Yes Yes Yes QFP-100 Interface :: UART :: PCI Part Number Description Channel CPU Interface Data 5/3.3V (Mb/s) XR17D158 Universal (3.3V and 5V) PCI Bus Dual UART 8 PCI Bus (2.2) 6.2/4.0 Yes XR17D154 Universal (3.3V and 5V) PCI Bus Dual UART 4 PCI Bus (2.2) 6.2/4.0 Yes XR17D152 Universal (3.3V and 5V) PCI Bus Dual UART 2 PCI Bus (2.2) 6.2/4.0 Yes XR17V258 66MHZ PCI Bus Octal UART with Power Management Support 8 PCI Bus (3.0) 8.0 Yes Counters INT Trigger RTS/CTS IrDA Support RS-485 5V Tolerant Inputs Supply Voltage (V) Package(s) Yes Yes Yes Yes 3.3, 5 LQFP-144 Yes Yes Yes Yes 3.3, 5 LQFP-144 Yes Yes Yes Yes 3.3, 5 TQFP-100 Yes Yes Yes Yes 3.3 LQFP-144 Interface :: UART :: I²C Part Number Description Channel CPU Interface RS-232 Drivers/ Rx Per CH Counters XR20M1170 Single Channel I²C/SPI UART w/64-byte FIFOs 1 I²C or SPI N/A Yes XR20M1172 Two Channnel I²C/SPI UART w/64-byte FIFOs 2 I²C or SPI N/A Yes XR20V2170 Single Channel Integrated I²C/SPI UART and RS-232 Transceiver 1 I²C or SPI 3/5 Yes XR20V2172 Two Channel Integrated I²C/SPI UART and RS-232 Transceiver 2 I²C or SPI 3/5 Yes INT Trigger Tx/Rx FIFO Size RTS/CTS IrDA 5V Tolerant Support Inputs Supply Voltage (V) 64/64 Yes Yes No Package(s) QFN-16, QFN-24 QFN-28, TSSOP-16, TSSOP-24 64/64 Yes Yes No QFN-32, TSSOP-28 64/64 Yes No No QFN-40 64/64 Yes Yes No QFN-64 Interface :: UART :: Combo Part Number Description Channel XR19L220 Single Channel Integrated UART and RS-232 Transceiver 1 XR19L222 Two Channel Integrated UART and RS-232 Transceiver 2 XR19L400 Single Channel Integrated UART and RS-485 Transceiver 1 XR19L402 Two Channel Integrated UART and RS-485 Transceiver 2 CPU Interface RS-232 Drivers/ Rx Per CH Counters 3/5 No 3/5 Yes N/A N/A Yes Yes INT Trigger 4 Levels/ 4 Levels Tx/Rx FIFO Size RTS/CTS IrDA Support 5V Tolerant Inputs Supply Voltage (V) Package(s) 16/16 Yes No Yes QFN-40 64/64 Yes Yes Yes QFN-64 64/64 No No Yes 3.3 or 5 QFN-40 64/64 No Yes Yes 3.3 or 5 QFN-48 Interface :: UART :: Wireless Part Number Description Interfaces UART Channel Tx/Rx FIFO (Bytes) RTS/ CTS XR18W750 Wireless UART Controller Parallel (8-bit), Serial, I²C Master 1 64/64 Yes Yes N/A N/A N/A N/A N/A N/A QFN-48 XR18W753 Single Chip 868MHZ to 956MHZ RF Transceiver I²C Slave N/A N/A N/A N/A MHz 100Kbps 250Kbps -94dBm -91dBm -24-0dBm QFN-48 Interface :: Transceiver :: RS-232 Part Number Description No. of Tx No. of Rx Data Rate (kbps) 5V Tolerant Inputs ESD (KV) Frequency Vcc MAX.(V) Data 868.3MHz Vcc (V) Data MHz Typ. ICC (ma) Rx Int. Chrg. Pump Rx No. of Ext. Caps Output Power Nom Cap. Value (µf) Supply Voltage (V) SP3243E Intelligent +3.0V to +5.5V RS-232 Transceiver SP3232E True +3.0V to +5.5V RS-232 Transceivers SP3224E-3227E Intelligent +3.0V to +5.5V RS-232 Transceiver with On-Line Plus 1/2 1/2 250/ SP3244E/3245E Intelligent +3.0V to +5.5V RS-232 Transceiver with On-Line Plus / SP202E High Performance RS-232 Transceivers SP232E +/-15KV ESD, 5V Single-Supply RS-232 Drivers/Receivers SP3238E Intelligent +3.0V to +5.5V RS-232 Transceiver Interface :: Transceiver :: RS-422 & RS-485 Part Number Description Vcc (V) No. of Tx No. of Rx Duplex Data Rate (kbps) ESD (KV) Typ. ICC (ma) Typ. Shut Down ICC (µa) SP3070E-3078E 3.3V, 15kV, Failsafe RS-485/RS-422 Full Duplex with Slew Limit Full/Half Advanced-Failsafe RS-485/RS-422 Transceivers 1/8th Unit Load, SP3080E-3088E Full/Half Slew-Rate Limited, ±15kV ESD-Protected SP1486E 5V, 15kV ESD, PROFIBUS RS-485/RS-422 Half Duplex Transceiver Half SP485E 3.3V Low Power Half-Duplex RS-485 Transceivers w/10mbps Data Rate Half Interface :: Transceiver :: Multiprotocol Part Number Description No. of Tx No. of Rx Data Rate (kbps) Typ. ICC (ma) Rx Failsafe Open Rx Failsafe Short Shutdown Shutdown ESD (KV) Termination Supported Protocols Comments SP508 Rugged 20Mbps, 8 Channel Multi-Protocol Transceiver Complete RS-232, RS-449, EIA-530, EIA-530A, V.10, V.11, V.28, V.35, V.36, X.21 Single Chip, 15kV SP509 Rugged 40Mbps, 8 Channel Multi-Protocol Transceiver Complete RS-232, RS-449, EIA-530, EIA-530A, V.10, V.11, V.28, V.35, V.36, X.21 Single Chip, 15kV 40Mbps SP3508 Rugged 3.3V, 20Mbps, 8 Channel Multiprotocol Tranciever with RS-232, RS-449, EIA-530, EIA-530A, V.10, Complete mable DCE/DTE and Terminination Resistors V.11, V.28, V.35, V.36, X.21 3V Single Supply, Single Chip SP331 mable RS-232/RS-485 Transceiver RS-232, V.28, RS-485, RS-422, V.24 RS-232/RS-485 SP332 RS-232/RS-485 Multi-Mode Serial Transceiver RS-232, V.28, RS-485, RS-422, V.24 RS-232/RS-485 w/loopback Package(s) TL Tri-State Multi-Drop Nodes 11

12 SALES OFFICES NORTH AMERICA Exar Corporation, Fremont, CA, USA Exar Corporation, Palatine, IL, USA Exar Corporation, Billerica, MA, USA Exar Corporation, Plano, TX, USA Exar Corporation, Atlanta, GA, USA Exar Corporation, Montreal, Quebec, Canada EUROPE Exar SARL, Vallauris, France Exar Ltd, Munich, Germany Exar Ltd, London, United Kingdom JAPAN Exar Japan Corporation, Tokyo, Japan ASIA PACIFIC Exar Corporation, Beijing, China Exar Corporation Shanghai Representative Office, Shanghai, China Exar Corporation, Shenzhen, China Exar Corporation, Seoul, Korea Exar Corporation, Malaysia Exar Taiwan Corporation, Taipei, Taiwan Exar is a trademark of EXAR Corporation. All other trademarks and registered trademarks are property of their respective owners. XRINTBRO EXAR Corporation