MPC555LFMZP40 Freescale Semiconductor, MPC555LFMZP40 Datasheet - Page 594

• 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

16.4.3 Transmit Process
MPC555
USER’S MANUAL
The transmit process includes preparation of a message buffer for transmission, as
well as the internal steps performed by the TouCAN to decide which message to trans-
mit. For the user, this involves loading the message and ID to be transmitted into a
message buffer and then activating that buffer as an active transmit buffer. Once this
is done, the TouCAN performs all additional steps necessary to transmit the message
onto the CAN bus.
The user should prepare or change a message buffer for transmission by executing
the following steps.
Once an active transmit code is written to a transmit message buffer, that buffer begins
participating in an internal arbitration process as soon as the receiver senses that the
CAN bus is free, or at the inter-frame space. If there are multiple messages awaiting
transmission, this internal arbitration process selects the message buffer from which
the next frame is transmitted.
3. Initialize mask registers for acceptance mask as needed
4. Initialize TouCAN interrupt handler
5. Negate the HALT bit in the module configuration register
1. Write the control/status word to hold the transmit buffer inactive (code =
2. Write the ID_HIGH and ID_LOW words
3. Write the data bytes
4. Write the control/status word (active Tx code, Tx length)
/
MPC556
a. The control/status word of all message buffers must be written either as
b. All other entries in each message buffer should be initialized as required
a. Initialize the interrupt configuration register (CANICR) with a specific
b. Set the required mask bits in the IMASK register (for all message buffer
a. At this point, the TouCAN attempts to synchronize with the CAN bus
0b1000)
an active or inactive message buffer.
request level
interrupts), in CANCTRL0 (for bus off and error interrupts), and in
CANMCR for the WAKE interrupt
In both the transmit and receive processes, the first action in prepar-
ing a message buffer must be to deactivate the buffer by setting its
code field to the proper value. This step is mandatory to ensure data
coherency.
Steps one and four are mandatory to ensure data coherency.
Freescale Semiconductor, Inc.
For More Information On This Product,
CAN 2.0B CONTROLLER MODULE
Go to: www.freescale.com
Rev. 15 October 2000
NOTE
NOTE
MOTOROLA
16-12