MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 1149

• Manufacturer Part Number: MPC561MZP56
• Manufacturer: Freescale

Specifications of MPC561MZP56

• Cpu Family: MPC56x
• Device Core: PowerPC
• Device Core Size: 32b
• Frequency (max): 56MHz
• Interface Type: QSPI/SCI/SPI/UART
• Total Internal Ram Size: 32KB
• # I/os (max): 56
• Number Of Timers - General Purpose: 22
• Operating Supply Voltage (typ): 2.6/5V
• Operating Supply Voltage (max): 2.7/5.25V
• Operating Supply Voltage (min): 2.5/4.75V
• On-chip Adc: 2(32-chx10-bit)
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 388
• Package Type: BGA
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Lead Free Status / RoHS Status: Not Compliant

C
C.2.1
The KAPWR signal is the MPC561/MPC563 keep-alive power. KAPWR is used for the crystal oscillator
circuit, and should be isolated from the noisy supplies. It is recommended that an RC filter be used on
KAPWR, or bypass capacitors that are located as close as possible to the part.
C.2.2
VDDSYN and VSSSYN are the PLL dedicated power supplies. These supplies must be used only for the
PLL and isolated from all other noisy signals in the board. VDDSYN could be isolated with RC filter (see
Figure
cut-off frequency of 500 Hz.
Freescale Semiconductor
SOCKET
•
•
•
C-6), or LC filter. The maximum noise allowed on VDDSYN, and VSSSYN is 50 mV with typical
EXTAL pad capacitance is C
Socket capacitance C <=1pF
Board trace capacitance C <=1pF. This should be low since the crystal must be located very close
to the chip.
is socket and board trace capacitance
KAPWR Filtering
PLL External Components
Note: A filter cut off frequency of 500Hz is recommended, however this will result in a
capacitor size of 33uF using a 10 Ohm resistor. This may be too expensive or large
for the system. In this case the filter shown with cut- off frequency of 160kHz will suffice.
KAP 2.6 V
KAP 2.6 V
Board
100 nF
Figure C-5. Bypass Capacitors Example (Alternative)
Board
VSSSYN
<10 Ω
MPC561/MPC563 Reference Manual, Rev. 1.2
100 nF
1 µF
PAD
Figure C-4. RC Filter Example
VSSSYN
= ~7 pF
MPC56x Device
KAPWR
MPC56x Device
KAPWR
Clock and Board Guidelines
C-5