MPC555LFMZP40 Freescale Semiconductor, MPC555LFMZP40 Datasheet - Page 578

• Manufacturer Part Number: MPC555LFMZP40
• Description: IC MCU 32BIT 40MHZ 272-BGA
• Manufacturer: Freescale Semiconductor
• Series: MPC5xxr

Specifications of MPC555LFMZP40

• Core Processor: PowerPC
• Core Size: 32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 101
• Program Memory Size: 448KB (448K x 8)
• Program Memory Type: FLASH
• Ram Size: 26K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 2.7 V
• Data Converters: A/D 32x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 272-PBGA
• Controller Family/series: POWER 5xx
• Ram Memory Size: 26KB
• Cpu Speed: 63MIPS
• Embedded Interface Type: QSPI, SCI, TouCAN
• Operating Temperature Range: -40°C To +125°C
• No. Of Pins: 272
• Rohs Compliant: No
• Processor Series: MPC5xx
• Core: PowerPC
• Data Bus Width: 32 bit
• Data Ram Size: 26 KB
• Interface Type: CAN, QSPI, SCI
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 101
• Operating Supply Voltage: 3.3 V to 5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: MPC555CMEE
• Minimum Operating Temperature: - 85 C
• On-chip Adc: 10 bit, 32 Channel
• Cpu Family: MPC55xx
• Device Core: PowerPC
• Device Core Size: 32b
• Frequency (max): 40MHz
• Total Internal Ram Size: 32KB
• # I/os (max): 101
• Operating Supply Voltage (typ): 5V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 272
• Package Type: BGA
• For Use With: MPC555CMEE - KIT EVAL FOR MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: No

15.15.4 MIOS1 Output Pulse Width Modulation With MDASM
MPC555
USER’S MANUAL
Output waveforms can be generated with any duty cycle without software involvement.
The software sets up a MDASM with the compare times for the rising and falling edges
and they are automatically repeated. The software does not need to respond to inter-
rupts to generate continuous pulses. The frequency may be selected as the frequency
of a free-running counter time-base, times a binary multiplier selected in the MDASM.
Multiple PWM outputs can be created from multiple MDASMs and share one counter
submodule, provided that the frequencies of all of the output signals are a binary mul-
tiple of the time-base and that the counter submodule is operating in a free-running
mode. Each MDASM has a software selectable “don’t care” on high-order bits of the
time-base comparison so that the frequency of one output can be a binary multiple of
another signal. Masking the time-base serves to multiply the frequency of the time-
base by a binary number to form the frequency of the output waveform. The duty cycle
can vary from one cycle to 64-Kbyte cycles. The frequency can range from 0.48 Hz to
156 KHz, though the resolution decreases at the higher frequencies to as low as seven
bits. The generation of output square wave signals is of course the special case where
the high and low times are equal.
When an MMCSM is used to drive the time-base, the modulus value is the period of
the output PWM signal.
leading edge of an output waveform is programmable for a rising or a falling edge. The
software selects the period of the output signal by programming the MMCSM with a
modulus value. The leading edge compare value is written into register A by software
and the trailing edge time is written into register B1. When the leading edge value is
reached, the content of register B1 is transferred to register B2, to form the next trailing
edge value. Subsequent changes to the output pulse width are made by writing a new
time into register B1. Updates to the pulse width are always synchronized to the lead-
ing edge of the waveform.
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 up-
date the new trailing edge time.
/
MPC556
MODULAR INPUT/OUTPUT SUBSYSTEM (MIOS1)
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 15-12
Go to: www.freescale.com
Rev. 15 October 2000
shows such an example. The polarity of the
MOTOROLA
15-42