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TMS320F28375D: What is significant of VREADST bit?

Amtech
Genius 4595 points

Part Number: TMS320F28375D

Dear,

What is significant of below bit for TMS320F28375D?

Flash0CtrlRegs.FBAC.bit.VREADST

in older example code this is not available where in new example code this is available in "void InitFlash(void)".

  • 0
    TI__Guru* 87155 points

    Amtech,

    Please read the section 2.12.6 Flash and OTP Power-Down Modes and Wakeup in TRM at

    In this section, procedure to enter Flash low power mode is explained.  As mentioned in that procedure, VREADST should be configured before powering down the Flash to ensure the requisite delay needed for the flash pump/bank to come out of low-power mode.

    Thanks and regards,
    Vamsi

  • 0 in reply to Vamsi Gudivada
    TI__Guru* 87155 points
    Amtech,

    Adding more info here for the sake of others that may refer to this post: The default value of VREADST is good enough for the flash to power up properly at the INTOSC frequency. The VREADST configuration that we provided in InitFlash() is to cover the max frequency (200MHz) case. This is required for proper flash wake up at the higher frequencies if users put it to sleep for power saving reason.

    Thanks and regards,
    Vamsi