PTX100R UART without hardware flow control

Hi Louis,

Louis___ said:

I really need to know if hardware flow control is essential or if no hardware flow control is acceptable or maybe software flow control. 

Please refer on the PTX100R Datasheet, on section 3.7.2 Host-Interfaced Lines:

Please also refer on 3.7.6 UART, on page: 22

HW Flow Control should be enabled to control the PTX100R. 
Unfortunately, 4 GPIOs should be utilized from the Host MCU for the communication with the PTX100R with any Host Interface you pick for your design.

Best Regards,
OV_Renesas

Hi OV_Renesas,

Thanks for the reply. Sorry to be picky but when you say should, is this must? I don't have access to flow control pins and I have also communicated somewhat basically with the PTX100R without flow control (I commanded and basic reset and such but nothing more than that). I was wondering if it's absolutely required meaning I'll need to use another reader IC?

Thanks, Louis

Hi Louis,

Thank you for the reply and apologies for the delay.
As stated in the DS, the 4-Wire UART is a must to ensure the correct behavior of the PTX100R.
You could possibly communicate with the PTX100R with 2-Wire UART but we cannot guarantee the correct behavior of the IC.

Best Regards,
OV_Renesas

Hi Louis,

Thank you for the reply and apologies for the delay.
As stated in the DS, the 4-Wire UART is a must to ensure the correct behavior of the PTX100R.
You could possibly communicate with the PTX100R with 2-Wire UART but we cannot guarantee the correct behavior of the IC.

Best Regards,
OV_Renesas