SPRS945E January 2017 – April 2020 TMS320F280040 , TMS320F280040C , TMS320F280041 , TMS320F280041C , TMS320F280045 , TMS320F280048 , TMS320F280048C , TMS320F280049 , TMS320F280049C
PRODUCTION DATA.
An internal power-on reset (POR) circuit holds the device in reset and keeps the I/Os in a high-impedance state during power up. The POR is in control and forces XRSn low internally until the voltage on VDDIO crosses the POR threshold. When the voltage crosses the POR threshold, the internal brownout-reset (BOR) circuit takes control and holds the device in reset until the voltage crosses the BOR threshold (for internal BOR details, see Section 5.9.1.6).