MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 286

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MPC555
USER’S MANUAL
VFLASH (5 V)
terization of production silicon. The goal is to keep the power consumption during
power up sequencing below the operating power consumption.
During the power down sequence the user needs to assert PORESET while VDDI and
VDDL are at a voltage equal or greater to 3 V. Below this voltage the power supply
chip can be turned off. If the turn off voltage of the power supply chip is greater than
0.74 V for the 3-V supply and greater than 0.8 V for the 5-V supply, then the circuitry
inside the MPC555 / MPC556 will act as a load to the respective supply and will dis-
charge the supply line down to these values. Since the 3-V logic represents a larger
load to the supply chip, the 3-V supply line will decay faster than the 5-V supply line.
VDDA, VRH
VDDSRAM
PORESET
VDD, NVVL,
VDDSYN
HRESET
KAPRR
QVDDL
VDDH
/
MPC556
Figure 8-13 No Standby, No KAPWR, All System Power On/Off
CLOCKS AND POWER CONTROL
Rev. 15 October 2000
Power On
See Note 1.
Operating
See Note 2.
Power Off
MOTOROLA
8-26