MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 281

• 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

8.9.2.3 VDDSYN, VSSSYN
8.9.2.4 KAPWR
8.9.2.5 VDDA, VSSA
8.9.2.6 VPP
8.9.2.7 VDDF, VSSF
8.9.2.8 VDDH
8.9.2.9 VDDSRAM
8.9.2.10 VSS
MPC555
USER’S MANUAL
The charge pump and the VCO of the SPLL are fed by a separate 3.3-V power supply
(VDDSYN) in order to improve noise immunity and achieve a high stability in its output
frequency. VSSSYN provides an isolated ground reference for the PLL.
The oscillator, time base counter, decrementer, periodic interrupt timer and the real-
time clock are fed by the KAPWR rail. This allows the external power supply unit to
disconnect all other sub-units of the MCU in low-power deep-sleep mode. The TEXP
pin (fed by the same rail) can be used by the external power supply unit to switch be-
tween sources. The IRQ[6:7]/MODCK[2:3], IRQ[5]/MODCK1, XTAL, EXTAL, EXT-
CLK, PORESET, HRESET, SRESET, and RSTCONF/TEXP input pins are powered
by KAPWR. Circuits, including pull-up resisters, driving these inputs should be pow-
ered by KAPWR.
VDDA supplies power to the analog subsystems of the QADC_A and QADC_B mod-
ules; it is nominally 5.0 V. VDDA is the ground reference for the analog subsystems.
VPP supplies the programming and erase voltage for the CMF flash modules. It is
nominally 5.0 V for program or erase operations and can be lowered to a nominal 3.3
V for read operations.
VDDF provides internal power to the CMF flash module; it should be a nominal 3.3 V.
VSSF provides an isolated ground for the CMF flash module.
VDDH provides power for the 5-V I/O operations. It is a nominal 5.0 V.
VDDSRAM supplies power to the 26-Kbyte SRAM module and the DPTRAM. It can
be used to keep the contents on the SRAM stable while the rest of the MPC555 /
MPC556 is powered down for standby operation.
VSS provides the ground reference for the MPC555 / MPC556.
/
MPC556
CLOCKS AND POWER CONTROL
Rev. 15 October 2000
MOTOROLA
8-21