ZHCSS40I march   1994  – march 2021 TL16C550C

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 说明
  4. 3 Revision History
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  Recommended Operating Conditions (Low Voltage - 3.3 nominal)
    3. 5.3  Recommended Operating Conditions (Standard Voltage - 5 V nominal)
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics (Low Voltage - 3.3 V nominal)
    6. 5.6  Electrical Characteristics (Standard Voltage - 5 V nominal)
    7. 5.7  System Timing Requirements
    8. 5.8  System Switching Characteristics
    9. 5.9  Baud Generator Switching Characteristics
    10. 5.10 Receiver Switching Characteristics
    11. 5.11 Transmitter Switching Characteristics
    12. 5.12 Modem Control Switching Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Autoflow Control (see )
    2. 7.2 Auto-RTS (see )
    3. 7.3 Auto-CTS (see )
    4. 7.4 Enabling Autoflow Control and Auto-CTS
    5. 7.5 Auto-CTS and Auto-RTS Functional Timing
    6. 7.6 Functional Block Diagram
    7. 7.7 Principles of Operation
      1. 7.7.1  Accessible Registers
      2. 7.7.2  FIFO Control Register (FCR)
      3. 7.7.3  FIFO Interrupt Mode Operation
      4. 7.7.4  FIFO Polled Mode Operation
      5. 7.7.5  Interrupt Enable Register (IER)
      6. 7.7.6  Interrupt Identification Register (IIR)
      7. 7.7.7  Line Control Register (LCR)
      8. 7.7.8  Line Status Register (LSR)
      9. 7.7.9  Modem Control Register (MCR)
      10. 7.7.10 Modem Status Register (MSR)
      11. 7.7.11 Programming Baud Generator
      12. 7.7.12 Receiver Buffet Register (RBR)
      13. 7.7.13 Scratch Register
      14. 7.7.14 Transmitter Holding Register (THR)
  9. 8 Application Information
  10. 9 Device and Documentation Support
    1. 9.1 接收文档更新通知
    2. 9.2 支持资源
    3. 9.3 Trademarks
    4. 9.4 静电放电警告
    5. 9.5 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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5.11 Transmitter Switching Characteristics

over recommended ranges of supply voltage and operating free-air temperature
PARAMETER ALT. SYMBOL FIGURE TEST CONDITIONS MIN MAX UNIT
td15 Delay time, initial write to transmit start tIRS 13 8 24 baudout cycles
td16 Delay time, start to INTRPT tSTI 13 8 10 baudout cycles
td17 Delay time, WR (WR THR) to reset INTRPT tHR 13 CL = 75 pF 50 ns
td18 Delay time, initial write to INTRPT (THRE(1)) tSI 13 16 34 baudout cycles
td19 Delay time, read IIR(1) to reset INTRPT (THRE(1)) tIR 13 CL = 75 pF 35 ns
td20 Delay time, write to TXRDY inactive tWXI 14, 15 CL = 75 pF 35 ns
t21 Delay time, start to TXRDY active tSXA 14, 15 CL = 75 pF 9 baudout cycles
(1) THRE = transmitter holding register empty; IIR = interrupt identification register.