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CC2538 initial power and reset sequence

Nomo
Guru 16800 points
Other Parts Discussed in Thread: CC2538, CC2538EM-RD

Hello,

I have the following questions for CC2538.

1. Let me know the rule of the slope time for the input voltage (DVDD and DVDD_USB).

2. Is there a sequence of RESET_N and the voltage input (DVDD and DVDD_USB)?

I can't find the document describing the initial power/reset sequence and the specification of the voltage such as the slope time.
Should I take care of the sequence and the rule?

Best Regards,

Nomoto

  • 0
    TI__Mastermind 35795 points

    Nomoto,

    Please refer to cc2538EM reference design documentation: http://www.ti.com/tool/cc2538em-rd .  All power supply pins should have same voltage . For ex: In case of CC2538EM, VDD can be selected from VDD_EB or DVDD_USB (derived from VBUS).  RESET_N is active low and is used to reset the chip - it has internal pull-up resistor.  In case it is connected to GPIO, it can be pulled low and then high to reset cc2538.

    Saurabh