About SD.5

SD.5 · 2024-04-29

I have recently purchased few STLink V3 mini boards. In that one board is enumerating as STM32 Virtual "COMPort in HS mode" and it is not detecting in STM32Cubeprogrammer. But other boards are enumerated as "STMicroelectronics STLink Vitrual COM Port...

SD.5 · 2021-04-19

We are moving from ST25R3911 to the latest version ST25R3911B with the firmware and the other circuitry remains the same. But we are seeing the reduction in operating distance for the cards.

SD.5 · 2021-05-10

Hi Ulysses,On the reference code, There is a comment says that the Antenna calibrate command needs to be run twice( Errata #1.5). (Screenshot attached)Can you share the errata 1.5 with us?Please find the Amplitude and Phase values for both the chips....

SD.5 · 2021-05-03

Hi Ulysses,On the registers 21h is set to 0x00 22h - We are not setting it explicitly and hence default value is being set and it is 0x8023h is the display register and we are seeing difference in this register between old chip(0x00) and new chip(0x...

SD.5 · 2021-05-02

Hi Ulysses,1) Thanks for the confirmation.2) We are seeing error on the Antenna calibration display register(23H) and the value is 0xF8. With the same firmware on the old chip, the value is 0x00. It happens during wakeup on card detection...

SD.5 · 2021-04-26

Hi Ulyses,1.Can you share the marking of the ST25R3911B and the content of IC Identity register (3Fh)? The marking on the ST25R3911B is 25R3911BFN04D S9THA 046 and the content of 3Fh is 0x0D2.How do you observe changed operating dista...

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STLink V3-Mini Enumerating as stm32 virtual comport in HS mode

is there a difference between ST25R3911 and ST25R3911B?

Re: is there a difference between ST25R3911 and ST25R3911B?

Re: is there a difference between ST25R3911 and ST25R3911B?

Re: is there a difference between ST25R3911 and ST25R3911B?

Re: is there a difference between ST25R3911 and ST25R3911B?