NXP Semiconductors MPC5606S - Pad Configuration During Reset Phases

Signal Description
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 85
3.3 Pad configuration during reset phases
All pads have a fixed configuration under reset.
During the startup phase, all pads are forced to tristate.
After startup phase, all pads are floating with the following exceptions:
• PB[5] (FAB) is pulldown. Without external strong pullup the device starts fetching from flash.
• RESET pad is driven low. This is released only after PHASE2 reset completion.
• Main oscillator pads (EXTAL, XTAL) are tristate.
• Nexus output pads (MDO[n], MCKO, EVTO, MSEO) are forced to output.
• The following pads are pullup:
—PB[6]
—PH[0]
—PH[1]
—PH[3]
—EVTI
3.4 Voltage supply pins
Voltage supply pins are used to provide power to the device. Two dedicated pins are used for 1.2 V
regulator stabilization.
There is a preferred startup sequence for devices in the MPC5606S family. That sequence is described in
the next paragraphs.
Broadly, the supply voltages can be grouped as follows:
• VREG HV supply (V
DDR
)
• Generic I/O supply
—V
DDA
—V
DDE_A
—V
DDE_B
—V
DDE_C
—V
DDE_E
—V
DDMA
—V
DDMB
—V
DDMC
—V
DDPLL
• LV supply (V
DD12
)
The preferred order of ramp up is as follows:
1. Generic I/O supply