NTAG 5 read/write multiple blocks via I2C

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NTAG 5 read/write multiple blocks via I2C

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tautologyclub
Contributor I

Hi,

Playing with the OM2NTA5332 NTAG5 dev board and it's going great in general, but there's one extremely crucial thing that worries me.

I have thus far been unable to read/write to SRAM and EEPROM in more than block-size chunks, i.e. 4 bytes at a time, via the I2C interface. The datasheet mentions WRITE_MULTIPLE_BLOCKS and FAST_WRITE, but those only work from NFC, right?

When using single blocks, reading the entire 256 byte SRAM takes 28 ms. If this can't be improved upon, it would be a complete dealbreaker for our use case. Any pointers?

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2 Replies

474 Views
tautologyclub
Contributor I

What more info do you need? My question is "how do you read/write multiple bytes of memory in a single i2c command", not sure what's unclear.

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494 Views
fangfang
NXP TechSupport
NXP TechSupport

Hello,

In order to better service for you. Would you please more information for your question?  So maybe I can reproduce this phenomenon.

 

Have a nice day.

 

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