SPVA024A June   2025  – October 2026 ADC810-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  POR
    6. 5.6  Timing Characteristics
    7. 5.7  Analog/Digital IO
      1. 5.7.1  Electrical Characteristics
      2. 5.7.2 Switching Characteristics
    8. 5.8  ADC
      1. 5.8.1 Electrical Characteristics
      2. 5.8.2 Linearity Parameters
      3. 5.8.3 Switching Characteristics
    9. 5.9  VREF
      1. 5.9.1 Electrical Characteristics
      2. 5.9.2 Voltage Characteristics
    10. 5.10 I2C
      1. 5.10.1 I2C Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagrams
    3. 6.3 Feature Description
      1. 6.3.1 Multiplexer
      2. 6.3.2 Voltage Reference
      3. 6.3.3 Oscillator
      4. 6.3.4 Output Data Rate and Conversion Time
      5. 6.3.5 Digital Comparator
      6. 6.3.6 Conversion Ready Pin
      7. 6.3.7 Interrupt Output (INT)
    4. 6.4 Device Functional Modes
      1. 6.4.1 Reset and Power-Up
      2. 6.4.2 Operating Modes
        1. 6.4.2.1 Single-Shot Mode
        2. 6.4.2.2 Continuous-Conversion Mode
    5. 6.5 Programming
      1. 6.5.1 I2C Interface
        1. 6.5.1.1 I2C Address Selection
        2. 6.5.1.2 I2C General Call
        3. 6.5.1.3 I2C Speed Modes
      2. 6.5.2 Target Mode Operations
        1. 6.5.2.1 Receive Mode
        2. 6.5.2.2 Transmit Mode
      3. 6.5.3 Writing To and Reading From the Registers
      4. 6.5.4 Data Format
  8. 7 Register Map
  9. 8 Application and Implementation
    1. 8.1 Typical Application
      1. 8.1.1 Schematic
      2. 8.1.2 ADC Configuration Examples
      3. 8.1.3 GPIO Configuration Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Nomenclature
    2. 9.2 Documentation Support
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.1.3 GPIO Configuration Example

The ADC810 can be configured to behave as an IO Expander in the different modes specified in the IO registers.

ADC810 ADC810-Q1 GPIO Input and Output Configuration HighlightFigure 8-4 GPIO Input and Output Configuration Highlight.

GPIO All Pins (except INT pin) Configured to Inputs

The device is configured so that all pins except the INT pin are inputs.

To do so, we'll write to the Pin Function register to set the pins to GPIO functionality, then write to the I/O Direction register to set the pins to inputs:

  1. I2C Controller Data Message #1 = {0x08,0x05,0x00}

  2. I2C Controller Data Message #2 = {0x07,0x02,0xFF}

When a GPIO changes from its original state to a new reading, the INT pin will indicate a change. To reset/update the IO input states (reset the INT pin), the user needs to read from the Input register.

If the user wants to change the input polarity of the input pins, the additional message can be written into the I/O Polarity Inversion register:

  1. I2C Controller Data Message #3 = {0x06,0x02,0xFF}

GPIO All Pins Configured to Outputs

The device is configured so that all pins are outputting a high signal.

To do so, we'll write to the Pin Function register to set the pins to GPIO mode, then write to the I/O Direction register to set the pins to output mode. Finally, we'll set the I/O Output Port register to a desired value, which in this case will be high:

  1. I2C Controller Data Message #1 = {0x08,0x04,0x00}

  2. I2C Controller Data Message #2 = {0x07,0x00,0x00}

  3. I2C Controller Data Message #2 = {0x05,0x03,0xFF}