ZHCSKW8C February   2020  – September 2023 ADS7066

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Timing Diagrams
    9. 6.9 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Analog Input and Multiplexer
      2. 7.3.2  Reference
        1. 7.3.2.1 External Reference
        2. 7.3.2.2 Internal Reference
      3. 7.3.3  ADC Transfer Function
      4. 7.3.4  ADC Offset Calibration
      5. 7.3.5  Programmable Averaging Filters
      6. 7.3.6  CRC on Data Interface
      7. 7.3.7  Oscillator and Timing Control
      8. 7.3.8  Diagnostic Modes
        1. 7.3.8.1 Bit-Walk Test Mode
        2. 7.3.8.2 Fixed Voltage Test Mode
      9. 7.3.9  Output Data Format
        1. 7.3.9.1 Status Flags
        2. 7.3.9.2 Output CRC (Device to Host)
        3. 7.3.9.3 Input CRC (Host to Device)
      10. 7.3.10 Device Programming
        1. 7.3.10.1 Enhanced-SPI Interface
        2. 7.3.10.2 Daisy-Chain Mode
        3. 7.3.10.3 Register Read/Write Operation
          1. 7.3.10.3.1 Register Write
          2. 7.3.10.3.2 Register Read
            1. 7.3.10.3.2.1 Register Read With CRC
    4. 7.4 Device Functional Modes
      1. 7.4.1 Device Power-Up and Reset
      2. 7.4.2 Manual Mode
      3. 7.4.3 On-the-Fly Mode
      4. 7.4.4 Auto-Sequence Mode
    5. 7.5 ADS7066 Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Charge-Kickback Filter and ADC Amplifier
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 AVDD and DVDD Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 接收文档更新通知
    4. 9.4 支持资源
    5. 9.5 Trademarks
    6. 9.6 静电放电警告
    7. 9.7 术语表
  11. 10Mechanical, Packaging, and Orderable Information

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7.3.10.1 Enhanced-SPI Interface

The device features an enhanced-SPI interface that allows the host controller to operate at slower SCLK speeds and still achieve full throughput. As described in Table 7-5, the host controller can use any of the four SPI-compatible protocols (SPI-00, SPI-01, SPI-10, or SPI-11) to access the device.

Table 7-5 SPI Protocols for Configuring the Device
PROTOCOLSCLK POLARITY
(At the CS Falling Edge)		SCLK PHASE
(Capture Edge)		CPOL_CPHA[1:0]DIAGRAM
SPI-00LowRising00bFigure 7-5
SPI-01LowFalling01bFigure 7-6
SPI-10HighFalling10bFigure 7-5
SPI-11HighRising11bFigure 7-6

On power-up, the device defaults to the SPI-00 protocol for data read and data write operations. To select a different SPI-compatible protocol, program the CPOL_CPHA[1:0] field. This first write operation must adhere to the SPI-00 protocol. Any subsequent data transfer frames must adhere to the newly-selected protocol.

GUID-20200916-CA0I-QF02-RR4C-M1P2BZNT9TZ0-low.gif
Figure 7-5 Standard SPI Timing Protocol
(CPHA = 0)
GUID-20200916-CA0I-HXXQ-RZRN-C9TCDX67HNHT-low.gif
Figure 7-6 Standard SPI Timing Protocol
(CPHA = 1)