DLPS048C March 2015 – June 2019 DLPC150
PRODUCTION DATA.
Although the DLPC150 requires an array of power supply voltages, (for example, VDD, VDDLP12, VDD_PLLM/D, VCC18, VCC_FLSH, VCC_INTF), if VDDLP12 is tied to the 1.1-V VDD supply (which is assumed to be the typical configuration), then there are no restrictions regarding the relative order of power supply sequencing to avoid damaging the DLPC150. This is true for both power-up and power-down scenarios. Similarly, there is no minimum time between powering-up or powering-down the different supplies if VDDLP12 is tied to the 1.1-V VDD supply.
If however VDDLP12 is not tied to the VDD supply, then VDDLP12 must be powered-on after the VDD supply is powered-on, and powered-off before the VDD supply is powered-off. In addition, if VDDLP12 is not tied to VDD, then VDDLP12 and VDD supplies must be powered on or powered off within 100 ms of each other.
Although there is no risk of damaging the DLPC150 if the above power sequencing rules are followed, the following additional power sequencing recommendations must be considered to ensure proper system operation.
Note that when VDD core power is applied, but I/O power is not applied, additional leakage current may be drawn. This added leakage does not affect normal DLPC150 operation or reliability.
Figure 15 and Figure 16 show the DLPC150 power-up and power-down sequence for both the normal PARK and fast PARK operations of the DLPC150 controller.