mcf52221 Freescale Semiconductor, Inc, mcf52221 Datasheet - Page 26

• Manufacturer Part Number: mcf52221
• Description: Mcf52223 Coldfire Microcontroller 32-bits Microcontrollers With Usb And Zigbee
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
1.17
The pins described in
capability. All power supply pins must have adequate bypass capacitance for high-frequency noise suppression.
2
This section contains electrical specification tables and reference timing diagrams for the MCF52223 microcontroller unit,
including detailed information on power considerations, DC/AC electrical characteristics, and AC timing specifications.
26
USB Ground Supply
PLL Analog Supply
USB Power Supply
Power and Ground Pins
Electrical Characteristics
Positive Supply
Signal Name
Ground
The parameters specified in this data sheet supersede any values found in the module
specifications.
Table 17
provide system power and ground to the chip. Multiple pins are provided for adequate current
Abbreviation
VDDPLL,
V
V
VSSPLL
DD
SS
VDD
VSS
USB
USB
MCF52223 ColdFire Microcontroller, Rev. 2
Table 17. Power and Ground Pins
Dedicated power supply signals to isolate the sensitive PLL analog
circuitry from the normal levels of noise present on the digital power
supply.
This pin supplies power to the USB Module.
This pin is the negative (ground) supply pin for the USB Module.
This pin is the negative supply (ground) to the chip.
These pins supply positive power to the core logic.
NOTE
Function
Freescale Semiconductor