About Jeff C

Jeff C · 2024-01-17

In an earlier post, the ST25RU3993 was EOL with no replacement.https://community.st.com/t5/st25-nfc-rfid-tags-and-readers/replacement-for-st25ru3993-coming/m-p/60581 Now the ST25RU3993 is again available and active. Is there an official period this p...

Jeff C · 2023-04-24

The ST25RU3993 is flagged as NRND and Digikey reports the part as EOL.The product is great. Is there a replacement planned?

Jeff C · 2021-06-29

I see the ADC Pin runs to the STM32 MCU ADC Pin, and that in the firmware demos it prints the adc value to the screen.However I don't see any place the ADC value is used for tuning or anything else other than just random information.For example, for ...

Jeff C · 2021-05-29

I made a new board based on the EVAL board (removing single ended xmit).My issue is even after tuning the radio, my tag detection performance is below the eval board (same parts/layout as far as I can tell, minus 2:1 mux for switching tx paths).Is th...

Jeff C · 2024-01-19

Appreciate your team looking into the matter. If ST allows another manufacturer to take over the line, please make an announcement.

Jeff C · 2021-07-04

Hi Bart,You are right about the 30 dBm max on my SA. For trivia's sake I see:Maximum average power 30 dBm, 3 minutes, fc ≥10 MHz, att > 20 dBm, preamp off Maximum damage level 33 dBm, fc ≥ 10 MHz, att > 20 dBm, preamp offI see that 30dBm is 1 Watt, ...

Jeff C · 2021-07-01

Perfect answer! Thank you Bart!

Jeff C · 2021-06-29

Hi Bart,Sorry I didn't realize you responded. Let me give you some feedback.Removed Internal PA? Yes traces removed entirely and left disconnected at pads of ST25RU3993SA to antenna port - This is where my knowledge is weak. How can I safely attach...

Jeff C · 2017-11-07

Posted on November 07, 2017 at 15:58For those looking for the location to 'fix' this issue as noted in the solution: STM32CubeMX -> Configuration Tab -> USART# Oval Button -> NVIC Settings -> USART# Global Interrupt -> Enabled [Must Check if DMA in...

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Clarify ST25RU3993 Availability

Replacement for ST25RU3993 coming?

ST25RU3993 ADC Debug Usage

ST25RU3993 Intermittent Read

Re: Clarify ST25RU3993 Availability

Re: ST25RU3993 Intermittent Read

Re: ST25RU3993 ADC Debug Usage

Re: ST25RU3993 Intermittent Read

Re: Using UART in DMA mode