Specifications of the ONE TIME PROGRAM (OTP) function of MPQ4242GVE-0000-AEC1-Z

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1

Please tell me about the specifications of the ONE TIME PROGRAM (OTP) function.

I would like to ask about the following:

  1. The specifications and setup method of the password required when writing to the OTP.
  2. The procedure to fix the initial values (I2C register values) using the OTP.
  3. Precautions when performing this (voltage conditions, method to verify writing, etc.).

I would like to understand a reliable method to fix the initial values.
If there are any manufacturer materials or application notes, I would appreciate it if you could provide them.

2

Hi @hirosawa ,

OTP is recommended to be done by the factory once you have confirmed your register settings. If you would like to test out different register settings, then please use our GUI and write your register modifications to volatile memory (not to non-volatile memory or NVM) while the MPQ4242 is powered on. Our GUI for MPQ4242 can be found here: Virtual Bench Pro 4.0

If you have confirmed your register settings and you would like to proceed to production level, then please submit a ticket: Contact MPS - Contact

Thanks,
Rubas

3

Ｈi Rubas, Thank you for your response.
Regarding OTP programming, it is recommended to be performed at the factory, but since we are producing in small lots, we would like to carry out OTP programming in-house.

In this regard, does this mean that it is not allowed to perform OTP programming in-house during mass production?

Also, if in-house programming is possible, could you please let us know the conditions for execution and any recommended procedures?

4

Hi @hirosawa ,

You can do it in-house if quantity is small but be aware that the factory tunes the electrical characteristics of the device specific to the OTP registers. If you OTP in-house, then you run the potential risk of the device’s electrical characteristics specific to the OTP registers not being within spec (i.e. the min and max range). I recommend testing each unit adequately.

Please submit a ticket through the link in my previous post ( Contact MPS - Contact ) to receive details about the OTP process in-house.

Thanks,
Rubas