MPC561MZP56 Freescale, MPC561MZP56 Datasheet - Page 806

• 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

Modular Input/Output Subsystem (MIOS14)
It is typical to use the pulse width modulation mode of the MDASM without interrupts, although an
interrupt can be enabled to occur on the leading edge. When the output is an unchanging repetitive
waveform, the MDASM continuously generates the signal without any software intervention. When the
software needs to change the pulse width, a new trailing edge time is written to the MDASM. The output
is changed on the next full pulse. When the software needs to change the output at a regular rate, such as
an acceleration curve, the leading edge interrupt gives the software one period time to update the new
trailing edge time.
17.13.5 MIOS14 Input Pulse Accumulation
Counting the number of pulses on an input signal is another capability of the MIOS14. Pulse accumulation
uses an MMCSM. Since the counters in the counter submodules are software accessible, pulse
accumulation does not require the use of an action submodule. The pulse accumulation can operate
continuously, interrupting only on binary overflow of the 16-bit counter. When an MMCSM is used, an
interrupt can instead be created when the pulse accumulation reaches a preprogrammed value. To do that,
the two’s complement of the value is put in the modulus register and the interrupt occurs when the counter
overflows.
17-74
MIOS14 Modulus Counter Submodule
Prescaler
Modulus
Select
Control
Clock
or Pin
From
Load
Modulus Register
Figure 17-46. MIOS14 Example: Pulse Width Modulation Output
16-bit Up-Counter
MPC561/MPC563 Reference Manual, Rev. 1.2
Submodule Bus
Counter
Buses
16-bit
Two
in OCAB mode (MOD3 – MOD0 = 0b0101)
Select
Bus
MIOS14 Double Action Submodule
16-bit Register A
16-bit Register B2
16-bit Register B1
16-bit Compare A
16-bit Compare B
Freescale Semiconductor
Compare
Interrupt
Leading
Flip-Flop
Output
Output
Edge
on
Output
Pin