Datasheet

System Design Information

MPC5200 Data Sheet, Rev. 4

Freescale Semiconductor 71

5 System Design Information

5.1 Power UP/Down Sequencing

Figure 52 shows situations in sequencing the I/O VDD (VDD_IO), Memory VDD (VDD_IO_MEM), PLL

VDD (PLL_AVDD), and Core VDD (VDD_CORE).

Power and Ground

VDD_IO -

VDD_MEM_IO -

VDD_CORE -

VSS_IO/CORE -

SYS_PLL_AVDD -

CORE_PLL_AVDD -

NOTES:

All “open drain” outputs of the MPC5200 are actually regular three-state output drivers with the output data tied low

and the output enable controlled. Thus, unlike a true open drain, there is a current path from the external system to

the MPC5200 I/O power rail if the external signal is driven above the MPC5200 I/O power rail voltage.

Table 52. MPC5200 Pinout Listing (continued)

Name Alias Type Power Supply

Output Driver

Type

Input

Type

Pull-up/

down