MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 533
MPC561MZP56
Manufacturer Part Number
MPC561MZP56
Description
Manufacturer
Freescale
Datasheet
1.MPC561MZP56.pdf
(1420 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MPC561MZP56
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Company:
Part Number:
MPC561MZP56R2
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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13.7.3.1
Two important factors influencing performance in analog integrated circuits are supply filtering and
grounding. Generally, digital circuits use bypass capacitors on every VDD/VSS signal pair. This applies
to analog sub-modules also. The distribution of power and ground is equally important.
Analog supplies should be isolated from digital supplies as much as possible. This necessity stems from
the higher performance requirements often associated with analog circuits. Therefore, deriving an analog
supply from a local digital supply is not recommended. However, if for economic reasons digital and
analog power are derived from a common regulator, filtering of the analog power is recommended in
addition to the bypassing of the supplies already mentioned.
For example, an RC low pass filter could be used to isolate the digital and analog supplies when generated
by a common regulator. If multiple high precision analog circuits are locally employed (i.e., two A/D
converters), the analog supplies should be isolated from each other as sharing supplies introduces the
potential for interference between analog circuits.
Grounding is the most important factor influencing analog circuit performance in mixed signal systems (or
in stand-alone analog systems). Care must be taken to not introduce additional sources of noise into the
analog circuitry. Common sources of noise include ground loops, inductive coupling, and combining
digital and analog grounds together inappropriately.
Freescale Semiconductor
Analog Supply Filtering and Grounding
3FE
3FD
3FC
3FB
3FA
3FF
8
7
6
5
4
3
2
1
0
.010
Figure 13-50. Errors Resulting from Clipping
MPC561/MPC563 Reference Manual, Rev. 1.2
.020
Input in Volts (V RH = 5.120,
.030
5.100
5.110
V
RL
= 0 V)
5.120
5.130
QADC64E Legacy Mode Operation
QADC64E CLIPPING
13-69
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