MCF52223 FREESCALE [Freescale Semiconductor, Inc], MCF52223 Datasheet - Page 28

• Manufacturer Part Number: MCF52223
• Description: Microcontroller Data Sheet
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Preliminary Electrical Characteristics
1.18 EzPort Signal Descriptions
Table 17
1.19 Power and Ground Pins
The pins described in
for adequate current 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. This section contains detailed information on power considerations, DC/AC
electrical characteristics, and AC timing specifications of MCF52223.
The electrical specifications are preliminary and are from previous designs or design simulations. These
specifications may not be fully tested or guaranteed at this early stage of the product life cycle, however
for production silicon these specifications will be met. Finalized specifications will be published after
complete characterization and device qualifications have been completed.
28
USB Ground Supply
PLL Analog Supply
USB Power Supply
contains a list of EzPort external signals
Preliminary Electrical Characteristics
Positive Supply
Signal Name
EzPort Serial Data Out
EzPort Serial Data In
Ground
EzPort Chip Select
The parameters specified in this appendix supersede any values found in the
module specifications.
Signal Name
EzPort Clock
Table 18
MCF52223 ColdFire® Microcontroller Data Sheet, Rev. 1
Abbreviation
VDDPLL,
V
V
VSSPLL
provide system power and ground to the chip. Multiple pins are provided
DD
SS
VDD
VSS
USB
USB
Table 17. EzPort Signal Descriptions
Table 18. Power and Ground Pins
Abbreviation
EZPCK
EZPCS
EZPD
EZPQ
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.
Preliminary
NOTE
Shift clock for EzPort transfers
Chip select for signalling the start and end
of serial transfers
EZPD is sampled on the rising edge of
EZPCK
EZPQ transitions on the falling edge of
EZPCK
Function
Function
Freescale Semiconductor
I/O
O
I
I
I