RF430CL330H: RF wake-up time from power off state.

Kaka

Guru 24520 points

Other Parts Discussed in Thread: RF430CL330H

Hi community member,

Would you please provide your answer for my question?

[Question]

Do you have a data of duration time that RF wake-up time from RF disabled state?

If mcu write the data to NDEF(RF430CL330H), we need to disabled the RF.

Thus, we would like to know the time until waking up the RF after writing the NDEF data.

If you have any question, please let me know.

Best regards.

Kaka

over 9 years ago

0 Eddie LaCost over 9 years ago

TI__Mastermind 39580 points

Hello Kaka,

The time will depend on the length of the NDEF data being written and the I2C clock speed. For example, I have captured writing a 48 byte “Hello, World!” test NDEF message and then enable RF in the control register. The code snippet is below. This took 2ms at 400kHz including the register reads/writes. Simply writing the 48 byte NDEF message was 1.69ms.

    //write NDEF memory with Capability Container + NDEF message
    Write_Continuous(0, NDEF_Application_Data, 48);

    //Enable interrupts for End of Read and End of Write
    Write_Register(INT_ENABLE_REG, EOW_INT_ENABLE + EOR_INT_ENABLE);

    //Configure INTO pin for active low and enable RF
    Write_Register(CONTROL_REG, INT_ENABLE + INTO_DRIVE + RF_ENABLE);

I have also attached the logic analyzer capture. You can use the Saleae software(use v1.1.18 beta) to view the capture.

http://support.saleae.com/hc/en-us/articles/201091414-Logic-1-1-18-Beta

48byte_NDEF.logicdata