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RM48L952: RM48L952

Manojkumar D N
Prodigy 50 points
Part Number: RM48L952

Hi,

We have used RM48L952 hercules microcontroller in our board.

Issue is on power on the board. microcontroller taking 10 seconds to  boot but  when board is in ON condition no issue if i do reset.

kindly reply at the earliest.

  • 0
    TI__Guru**** 196926 points
    Hello,

    Is 10 seconds from plugging the power to the MCU boot up (code runs to main())? What does the boot code do? How long do the I/O and core power supplies take from 0V to the minimum threshold?

    After the MCU gets stable power supplies (I/O, and Core), the device will take about 3500 oscillator cycles to go through the power phases (OSCIN start-up, flash pump power-up, flash bank power-up). If the OSCIN is 10MHz, those power phases will take less than 0.5 ms,

    After those power phases, the CPU reset is released and fetch the first instruction from the address 0x00000000, then execute your startup code.