SCPS280A November   2022  – November 2023 TCAL9538

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 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 I2C Bus Timing Requirements
    8. 5.8 Switching Characteristics
    9. 5.9 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 I/O Port
      2. 7.3.2 Adjustable Output Drive Strength
      3. 7.3.3 Interrupt Output (INT)
      4. 7.3.4 Reset Input (RESET)
      5. 7.3.5 Software Reset Call
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power-On Reset
    5. 7.5 Programming
      1. 7.5.1 I2C Interface
    6. 7.6 Register Maps
      1. 7.6.1 Device Address
      2. 7.6.2 Control Register and Command Byte
      3. 7.6.3 Register Descriptions
      4. 7.6.4 Bus Transactions
        1. 7.6.4.1 Writes
        2. 7.6.4.2 Reads
  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 Minimizing ICC When I/Os Control LEDs
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
      1. 8.3.1 Power-On Reset Requirements
    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 Receiving Notification of Documentation Updates
    2. 9.2 Support Resources
    3. 9.3 Trademarks
    4. 9.4 Electrostatic Discharge Caution
    5. 9.5 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|16
  • DTU|16
  • RSV|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.3.5 Software Reset Call

The software reset call is a command sent from the controller on the I2C bus that instructs all devices that support the command to be reset to the power-up default state. To function as expected, the I2C bus must be functional, and no devices can be hanging the bus.

The software reset call is defined as the following steps:

  1. A start condition is sent by the I2C bus controller.
  2. The address used is the reserved general call I2C bus address '0000 0000' with the R/W bit set to 0. The byte sent is 0x00.
  3. Any devices supporting the general call functionality will ACK. If the R/W bit is set to 1 (read), the device will NACK.
  4. Once the general call address is acknowledged, the controller sends only 1 byte of data equal to 0x06. If the data byte is any other value, the device does not acknowledge or reset. If more than 1 byte is sent, no more bytes is acknowledged, and the device ignores the I2C message considering as invalid.
  5. After the 1 byte of data (0x06) is sent, the controller sends a STOP condition to end the Software Reset sequence. A repeated START condition is ignored by the device and no reset is performed.

Once the above steps are completed successfully, the device performs a reset. This clears all register values back to power-on defaults.