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TL16C752CIRHBRG4 bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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1 / 50 page 1 FEATURES DESCRIPTION TL16C752C DUAL UART WITH 64-BYTE FIFO SLLS646 – MARCH 2008 www.ti.com • ST16C654/654D Pin Compatible With • RS-485 Mode Support Additional Enhancements (PFB Package Only) • Support 1.8-V, 2.5-V, 3.3-V, or 5-V Supply • Supports up to 24-MHz Crystal Input Clock • Characterized for Operation From –40°C to (1.5 Mbps) 85 °C, Available in Commercial and Industrial • Supports up to 48-MHz Oscillator Input Clock Temperature Grades (3 Mbps) for 5-V Operation • Software-Selectable Baud-Rate Generator • Supports up to 32-MHz Oscillator Input Clock • Prescalable Provides Additional Divide-by-4 (2 Mbps) for 3.3-V Operation Function • Supports up to 24-MHz Input Clock (1.5 Mbps) • Programmable Sleep Mode for 2.5-V Operation • Programmable Serial Interface Characteristics • Supports up to 16-MHz Input Clock (1 Mbps) – 5-, 6-, 7-, or 8-Bit Characters for 1.8-V Operation – Even, Odd, or No Parity Bit Generation and • 64-Byte Transmit FIFO Detection • 64-Byte Receive FIFO With Error Flags – 1-, 1.5-, or 2-Stop Bit Generation • Programmable and Selectable Transmit and • False Start Bit Detection Receive FIFO Trigger Levels for DMA and • Complete Status Reporting Capabilities in Interrupt Generation Both Normal and Sleep Mode • Programmable Receive FIFO Trigger Levels for • Line Break Generation and Detection Software/Hardware Flow Control • Internal Test and Loopback Capabilities • Software/Hardware Flow Control • Fully Prioritized Interrupt System Controls – Programmable Xon/Xoff Characters • Modem Control Functions (CTS, RTS, DSR, – Programmable Auto-RTS and Auto-CTS DTR, RI, and CD) • Optional Data Flow Resume by Xon Any • IrDA Capability Character • DMA Signaling Capability for Both Received and Transmitted Data on PN Package The TL16C752C is a quad universal asynchronous receiver/transmitter (UART) with 64-byte FIFOs, automatic hardware/software flow control, and data rates up to 3 Mbps. It incorporates the functionality of four UARTs, each UART having its own register set and FIFOs. The four UARTs share only the data bus interface and clock source, otherwise they operate independently. Another name for the UART function is asynchronous communications element (ACE), and these terms are used interchangeably. The bulk of this document describes the behavior of each ACE, with the understanding that four such devices are incorporated into the TL16C752C. The TL16C752C offers enhanced features. It has a transmission control register (TCR) that stores received FIFO threshold level to start/stop transmission during hardware and software flow control. With the FIFO RDY register, the software gets the status of TXRDY/RXRDY for all four ports in one access. On-chip status registers provide the user with error indications, operational status, and modem interface control. System interrupts may be tailored to meet user requirements. An internal loopback capability allows onboard diagnostics. Each UART transmits data sent to it from the peripheral 8-bit bus on the TX signal and receives characters on the RX signal. Characters can be programmed to be 5, 6, 7, or 8 bits. The UART has a 64-byte receive FIFO and transmit FIFO and can be programmed to interrupt at different trigger levels. The UART generates its own desired baud rate based upon a programmable divisor and its input clock. It can transmit even, odd, or no parity and 1-, 1.5-, or 2-stop bits. The receiver can detect break, idle or framing errors, FIFO overflow, and parity errors. The transmitter can detect FIFO underflow. The UART also contains a software interface for modem control operations, and software flow control and hardware flow control capabilities. The TL16C752C is available in a 32-pin QFN (RHB) package. A 48-pin QFP (PFB) package will be available in late 2008. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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