Differences between ST95HF and ST25R95

[Jhern.1]

Hi,

I am assessing to use CR95HF, ST95HF or ST25R95 for a low power access control reader application and I have a question.

I would like to know if thre is any difference between thse 2 parts:

• ST95HF
• ST25R95

Regards, Ramon.

[Brian TIDAL]

Hi Ramon,

The CR95HF and ST95HF devices are now part of the ST25R reader family as ST25R95.

Differences:

Device SPI/Uart/Card Emulation

CR95HF Yes/Yes/no

ST95HF Yes/No/Yes

ST25R95 Yes/No/Yes

For new developments, it is recommended to use the ST25R95. CR95HF can still be ordered for existing developments or for developments based on UART communication.

Rgds

BT

[Jhern.1]

Hi,

Thanks for your kind answer.

Since the dev kit for both CR95HF and ST25R95 is the same board: X-NUCLEO-NFC03A1

I guess the parts are basically the same, except for the UART, right?

Which part of those will be assembled on hte dev kit?

A picture from a datasheet on June 2016 you can see the CR95HF.

Which part is assembled nowadays? CR95HF or ST25R95?

Regards, Ramon.

[Brian TIDAL]

Hi

since the CR95HF has joined the ST25R family, ST25R95 is the part numbering (actually ST25R95-VMD5T is the full part number). The marking on the IC is still CR95HF.

The previous CR95HF-VMD5T part numbering is still available to avoid change of BOM for existing applications.

The device mounted on the X-NUCLEO-NFC03A1 is marked as CR95HF. You can use it in a CR95HF profile or in a ST25R95 profile.

Rgds

BT

[Jhern.1]

Hi Brian,

Thanks very much for your support.

In order to test the Tag detection I would like to use a Demo Sw and avoid coding.

Since the X-NUCLEO-NFC03A1 can not be directly controlled by a demo software such as STSW-95HF001

I am considering to acquire a M24LR-DISCOVERY evaluation kit so as to handle the CR95 transceiver with the demo software STSW-95HF001

In this way I can avoid coding for testing the TAG detection, right?

Do you think I can test the tag detection with this demo software (STSW-95HF001) and the M24LR kit?

Regards, Ramon.

[Brian TIDAL]

Hi,

ST provides the X-CUBE-NFC3 firmware package for the X-NUCLEO-NFC03A1 plugged on top of NUCLEO-L476RG, NUCLEOF401RE or NUCLEO-F103RB boards. The polling demo supports the tag detector (just press the user button of the nucleo board to enter the tag detector mode, called Wake up mode).

The X-CUBE-NFC3 firmware package includes binary file for NUCLEO-L476RG, NUCLEOF401RE or NUCLEO-F103RB: no need to code or compile, just drag and drop the bin file into the nucleo board.

I would recommend to use the X-CUBE-NFC3 and X-NUCLEO-NFC03A1 rather than STSW-95HF001. X-CUBE-NFC3 is based on the ST25 readers RFAL API (same application code can be reused on ST25R3911B or ST25R3916 readers).

Rgds

BT

[Jhern.1]

Hi,

Thanks for your detailed feedback.

It seems easy without nucleo boards, but I am wondering I could play around with different configurations of the tag detector (T inactive / Tswing) etc within this environment. I am afraid there is no demo SW for this approach so these parameters can be tweaked, right?

Regards, Ramon.

[Brian TIDAL]

Hi,

the recommended development platform for the CR95HF is the X-NUCLEO-NFC03A1 + X-CUBE-NFC3 + Nucleo.

The CR95HF demo board included in the M24LR-DISCOVERY kit is not designed as a development board (its FW is designed to enable a PC to control the CR95HF over an USB communication). Moreover, the FW is not based on the common ST25 Reader RFAL API. Therefore, I would not recommend to use the CR95HF demo board from the M24LR-DISCOVERY kit.

Rgds

BT

[Jhern.1]

Hi Brian,

Thanks again for your answer.

I am not intended to develope FW for STM32 MCUs. I will use other platform. I just want to test the tag detection with minimum developement effort. My goal is to check if the 50uA can be optimized while in tag detedtion mode.

As you suggest I can use the complied program inside  X-CUBE-NFC3 (e.g. STM32F401RE_NUCLEO_PollingTagDetect.bin). But I can not easily change tag detection parameters. I think I would have to change source code and complie within stm32 environment. Is it possible to compile free of license? Shouild I install STM32IDE?

As you can see in the attached picture the STSW-95HF001 (M24LR discovery kit) the tag detection tool allows to set up different parameters, run the calibration, etc... I think it make sense to try this sw. What do you think?

I think I would purchase both kits:

- M24LR disc. kit

- NUCLEO-L476RG

Regards, Ramon.

[Brian TIDAL · Accepted solution]

Hi,

you can use the STSW-95HF001  tag detection user interface or compile X-CUBE_NFC3 free of charge using STM32CubeIDE.

For your information, the X-CUBE_NFC3 can be ported on other MCU including non ST MCU (as long as a ST reader device is used: see the licence agreement). The porting on other MCU can be achieved through the macros in platfom.h (only little effort needed)

Rgds

BT