SBOU187A april   2017  – april 2023 INA233

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
    1. 1.1 INA233EVM Kit Contents
    2. 1.2 Related Documentation from Texas Instruments
  4. 2INA233EVM Hardware
    1. 2.1 Theory of Operation for INA233 Hardware
    2. 2.2 Signal Definitions of H1 (10-Pin Connector Socket)
      1. 2.2.1 SM-USB-DIG Platform Description
  5. 3INA233EVM Hardware Setup
    1. 3.1 Electrostatic Discharge Warning
    2. 3.2 One-Time INA233EVM GUI Software Setup
      1. 3.2.1 Hardware Requirements
      2. 3.2.2 Software Installation
    3. 3.3 Configuration of INA233EVM Jumper Settings
    4. 3.4 Connecting the Hardware
      1. 3.4.1 System Power Up
    5. 3.5 INA233EVM Features
      1. 3.5.1 J3: I2C VS Control Setting
      2. 3.5.2 J1: I2C Address Hardware Setting (A0)
      3. 3.5.3 J2: I2C Address Hardware Setting (A1)
      4. 3.5.4 External I2C Lines and Test Points SCL and SDA
      5. 3.5.5 IN+/IN– Input Filter (R1, R2, and C1)
      6. 3.5.6 Shunt Monitor Configuration
  6. 4INA233EVM Software Overview
    1. 4.1 Starting the INA233EVM Software
    2. 4.2 Configuring the INA233EVM Software
      1. 4.2.1 I2C Address Selection
      2. 4.2.2 Set the Configuration Register (MFR_ADC_CONFIG)
        1. 4.2.2.1 Set Averaging Mode
        2. 4.2.2.2 Set Conversion Times
        3. 4.2.2.3 Set Operating Mode
      3. 4.2.3 Set Calibration Register (MFR_CALIBRATION)
      4. 4.2.4 Set the MFR_DEVICE_CONFIG Register
      5. 4.2.5 Set the MFR_ALERT_MASK
      6. 4.2.6 Set the Warning Limit Registers
    3. 4.3 Using the INA233EVM Software
      1. 4.3.1 Read Data Tab
      2. 4.3.2 Status Register Tab
      3. 4.3.3 Register Map Tab
      4. 4.3.4 Plots Tab
  7. 5INA233EVM Documentation
    1. 5.1 Schematic
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials
  8. 6Revision History

4.2.1 I2C Address Selection

The INA233 device has a flexible I2C address configuration that allows for multiple devices to be on the same I2C lines. By moving the A0 and A1 addresses on jumpers J1 and J2 to either GND, VS, SDA, or SCL, the INA233 can be changed to a total of 16 I2C addresses as shown in Table 4-1.

Table 4-1 INA233 I2C Address Configuration
A1 A0 Slave Address Corresponding I2C Address in the GUI
GND GND 1000000 Read: x81
Write: x80
GND VS 1000001 Read: x83
Write: x82
GND SDA 1000010 Read: x85
Write: x84
GND SCL 1000011 Read: x87
Write: x86
VS GND 1000100 Read: x89
Write: x88
VS VS 1000101 Read: x8B
Write: x8A
VS SDA 1000110 Read: x8D
Write: x8C
VS SCL 1000111 Read: x8F
Write: x8E
SDA GND 1001000 Read: x91
Write: x90
SDA VS 1001001 Read: x93
Write: x92
SDA SDA 1001010 Read: x95
Write: x94
SDA SCL 1001011 Read: x97
Write: x96
SCL GND 1001100 Read: x99
Write: x98
SCL VS 1001101 Read: x9B
Write: x9A
SCL SDA 1001110 Read: x9D
Write: x9C
SCL SCL 1001111 Read: x9F
Write: x9E

Figure 4-3 illustrates how to configure the I2C addresses. To configure the I2C address in the GUI navigate to the SM-USB-DIG tab. Click on the Read I2C Address and Write I2C Address to input the I2C address configured on the INA233EVM hardware. Refer to Table 4-1 to make sure you assign the correct values.

GUID-E15CF70E-5463-49DA-AB51-C608D4F7BF44-low.png Figure 4-3 Setting the I2C Address