MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 103

• 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

2.5.5 Five-Volt Input/Output Pad
2.5.5.1 Type H Interface
MPC555
USER’S MANUAL
This pad type is for 5-V bi-directional pins. There is provision to pull the pin up to 5 V
and logic to control when the pull-up is enabled. For a 5-V driver, the internal “Fast
Mode” signal selects the slow or fast driver. All 5-V inputs have hyteresis.
This pad has logic for a 3-V output function as well as a 5-V input-output function. A
“3-V / 5-V sel” interface signal determines which driver gets selected.
This pad type has two separate data output paths. These paths are multiplexed onto
the output pin based on the 3-V / 5-V select signal. This pad also has a dedicated syn-
chronous input path.
If only one of the output paths is used on a device, the other can be connected to
ground. In this case, the 3-V / 5-V select signal must be tied to the appropriate value
to disable the other path.
Drive Sel
Data Out
Sprds
Data In
OE
IE
/
MPC556
Logic
Figure 2-12 Type G Interface
SIGNAL DESCRIPTIONS
Rev. 15 October 2000
Receiver
Driver
3-V
3-V
3 V
Pin
MOTOROLA
2-45