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說明

The TL16C752C is a dual 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.

特性

• ST16C654/654D Pin Compatible With
  Additional Enhancements (PFB Package Only)
• Supports up to 24-MHz Crystal Input Clock
  (1.5 Mbps)
• Supports up to 48-MHz Oscillator Input Clock
  (3 Mbps) for 5-V Operation
• Supports up to 32-MHz Oscillator Input Clock
  (2 Mbps) for 3.3-V Operation
• Supports up to 24-MHz Input Clock (1.5 Mbps)
  for 2.5-V Operation
• Supports up to 16-MHz Input Clock (1 Mbps)
  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
• DMA Signaling Capability for Both Received
  and Transmitted Data on PN Package
• 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
• Prescalable Provides Additional Divide-by-4 Function