TL16C754C - 具有 64 字节 FIFO 的四路 UART

TL16C754C是TI德州仪器公司的一款无产品，TL16C754C是具有 64 字节 FIFO 的四路 UART，本站介绍了TL16C754C的封装应用图解、特点和优点、功能等，并给出了与TL16C754C相关的TI元器件型号供参考。

TL16C754C - 具有 64 字节 FIFO 的四路 UART - 无 - UART - 德州仪器

产品描述

The ’754C is a quad universal asynchronous receiver transmitter (UART) with 64-byte FIFOs, automatic hardware and 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 ’754C. The ’754C offers enhanced features. It has a transmission control register (TCR) that stores received FIFO threshold level to start or 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 ’754C is available in a 64-pin TQFP PM package. RXRDY and TXRDY functionality is not supported in the TL16C754CPM device.

产品特性

ST16C654/654D Pin Compatible With Additional Enhancements
Support up to:
- 24-MHz Crystal Input Clock (1.5Mbps)
- 48-MHz Oscillator Input Clock (3Mbps) for 5-V Operation
- 32-MHz Oscillator Input Clock (2Mbps) for 3.3-V Operation
- 24-MHz Input Clock (1.5Mbps) for 2.5-V Operation
- 16-MHz Input Clock (1Mbps) for 1.8-V Operation
64-Byte Transmit FIFO
64-Byte Receive FIFO With Error Flags
Programmable and Selectable Transmit and Receive FIFO Trigger Levels for DMA and Interrupt Generation
Programmable Receive FIFO Trigger Levels for Software/Hardware Flow Control
Software/Hardware Flow Control
- Programmable Xon/Xoff Characters
- Programmable Auto-RTS and Auto-CTS
Optional Data Flow Resume by Xon Any Character
RS-485 Mode Support
Support 1.8-V, 2.5-V, 3.3-V, or 5-V Supply
Characterized for Operation From –40°C to 85°C, Available in Commercial and Industrial Temperature Grades
Software-Selectable Baud-Rate Generator
Prescaler Provides Additional Divide-by-4 Function
Programmable Sleep Mode
Programmable Serial Interface Characteristics
- 5-, 6-, 7-, or 8-Bit Characters
- Even, Odd, or No Parity Bit Generation and Detection
- 1-, 1.5-, or 2-Stop Bit Generation
False Start Bit Detection
Complete Status Reporting Capabilities in Both Normal and Sleep Mode
Line Break Generation and Detection
Internal Test and Loopback Capabilities
Fully Prioritized Interrupt System Controls
Modem Control Functions (CTS, RTS, DSR, DTR, RI, and CD)
Infrared Data Association (IrDA) Capability

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