SLUUDD2 June   2026 TPS65214

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Requirements for NVM Programming
  6. 3Typical NVM Flow
  7. 4Programming Instructions
    1. 4.1 Connecting to the I2C address
  8. 5Register Configuration
    1. 5.1  Configuring Enable Settings
    2. 5.2  Configuring the Bucks
    3. 5.3  Configuring LDOs
    4. 5.4  Configuring Sequence
    5. 5.5  Configuring GPIOs
    6. 5.6  Configuring Multi-Function Pins
    7. 5.7  Configuring the EN/PB/VSENSE Pin
    8. 5.8  Changing I2C Address
    9. 5.9  Configuring Mask Settings
    10. 5.10 Exporting an NVM Configuration File
    11. 5.11 Loading a NVM Configuration File to PMIC
  9. 6NVM Programming
  10. 7Non-NVM Registers
  11. 8TPS6521405 default settings
  12.   A References

4 Programming Instructions

This section describes the steps required to program the PMIC NVM. The programming process consists of two primarily steps; changing the register settings and saving the new values into the NVM memory. Program the NVM in Initialize state, where VSYS is supplied but all of the PMIC outputs and monitors are OFF.

Figure 4-1 shows the steps to reprogram the device. Note that the device address for the TPS6521505 PMIC is initially set to 0x48 by default. Ensure that the correct device address is set in the GUI in order to properly communicate with the PMIC.

The first command consists of an I2C OFF request to send the device to Initialize state. This command is only needed if the device is not in Initialize state. The second I2C command enables an internal oscillator for I2C communication during the Initialize state and disables the rail discharges. The third step requires updating register settings to match the desired application requirements. After the register settings are updated, the new values can be saved into the NVM by writing 0x0A to register address 0x34. The last step "Validation" is optional and consists of an I2C command that compares register settings with NVM content.

Note: The first I2C command (I2C OFF request) is only needed if the PMIC is not in Initialize state. The user programmable OPN TPS6521405 comes with the EN/PB/VSENSE pin configured as "push-button" with the FSD feature disabled by default. When configured as PB, the device detects an ON-request when the pin is pulled low. If this pin has a pull-up to VSYS, then PMIC stays in Initialize state after VSYS is supplied.
To verify if I2C communication is available in Initialize state, it is recommended to read the NVM ID register on address 0x01. The read back matches the two digits after the "TPS65214" in the part number. For example, when using TPS6521405, register 0x01 reads 05.

NVM Programming StepsFigure 4-1 NVM Programming Steps