MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 78

• 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

2.3.1.35 TRST
2.3.1.36 XTAL
2.3.1.37 EXTAL
2.3.1.38 XFC
2.3.1.39 CLKOUT
2.3.1.40 EXTCLK
2.3.1.41 VDDSYN
MPC555
USER’S MANUAL
Test Data Out – This output is used for serial test instructions and test data for on-
board test logic (JTAG).
Development Serial Data Output – This output line is the data-out line of the debug
port interface. See
Pin Name: trst_b
Test Reset – This input provides asynchronous reset to the test logic (JTAG).
For non-JTAG test applications, TRST should be connected to ground or PORESET
via an external resistor.
Pin Name: xtal
XTAL – This output line is one of the connections to an external crystal for the internal
oscillator circuitry.
Pin Name: extal
EXTAL – This line is one of the connections to an external crystal for the internal os-
cillator circuitry. If this pin is unused, it must be grounded.
Pin Name: xfc
External Filter Capacitance – This input line is the connection pin for an external ca-
pacitor filter for the PLL circuitry.
Pin Name: clkout
Clock Out – This output line is the clock system frequency. The CLKOUT drive
strength can be configured to full strength, half strength, or disabled. The drive
strength is configured using the COM[0:1] bits in the SCCR register in the USIU.
Pin Name: extclk
EXTCLK – Input. This is the external frequency source for the chip. If this is unused,
the pin must be grounded.
Pin Name: vddsyn
/
MPC556
SECTION 21 DEVELOPMENT SUPPORT
SIGNAL DESCRIPTIONS
Rev. 15 October 2000
for details.
MOTOROLA
2-20