NXP Designs中的主题 PN5180 EEPROM question

PN5180 EEPROM question

Shio_Tamba — Wed, 23 Dec 2020 02:09:47 GMT

I have a question about the EEPROM in PN5180.

I can find this Q&A about read/write cycle for the EEPROM.

https://community.nxp.com/t5/NXP-Designs/PN5180-EEPROM-Hardware-question/m-p/1097966

Q1. I cannot understand the "read/write cycle". The "1 cycle" means only read cycle or only write cycle ?

Q2. I guess that the write cycle occurs when I send the "WRITE_EEPROM", "UPDATE_EEPROM", etc. command to PN5180, and the read cycle occurs when I send the "READ_EEPROM", "RETREVE_RF_CONFIG" etc. command to PN5180. The read/write cycle occurs the other case?

For example, if we use the DPC, the register values are from EEPROM when the gear changes. The read cycle occurs in this case?

Re: PN5180 EEPROM question

Kan_Li — Thu, 24 Dec 2020 06:43:56 GMT

Hi @Shio_Tamba ,

Q1. I cannot understand the "read/write cycle". The "1 cycle" means only read cycle or only write cycle ?

- The "read/write cycle" here means the program cycle which including writing and erasing.

For example, if we use the DPC, the register values are from EEPROM when the gear changes. The read cycle occurs in this case?

- Yes, your understanding is correct.

There is no parameter else other than the data retention time related with read operation. You may refer to an EEPROM data sheet for more details on that. For example, https://www.nxp.com/docs/en/data-sheet/NXH5104.pdf?pspll=1 .

Hope that makes sense,

Have a great day,
Kan

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Re: PN5180 EEPROM question

Shio_Tamba — Thu, 24 Dec 2020 07:03:30 GMT

> You may refer to an EEPROM data sheet for more details on that. For example, https://www.nxp.com/docs/en/data-sheet/NXH5104.pdf?pspll=1 .

This means implicitly that the PN5180 contains this EEPROM ?

Re: PN5180 EEPROM question

Kan_Li — Thu, 24 Dec 2020 07:53:56 GMT

Hi @Shio_Tamba ,

No, you put too much interpretation on my answer. This data sheet is just helpful for you to understand the program cycle as well as the data retention time better.

Have a great day,
Kan