MCF5280CVF66J Freescale Semiconductor, MCF5280CVF66J Datasheet - Page 485
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MCF5280CVF66J
Manufacturer Part Number
MCF5280CVF66J
Description
IC MPU RISC 66MHZ 256-MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF528xr
Datasheet
1.MCF5216CVM66J.pdf
(766 pages)
Specifications of MCF5280CVF66J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
66MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, SPI, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
150
Program Memory Type
ROMless
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
256-MAPBGA
Processor Series
MCF528x
Core
ColdFire V2
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Development Tools By Supplier
NNDK-MOD5282-KIT
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5280CVF66J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 485 of 766
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25.4.11 Special Operating Modes
25.4.11.1 Debug Mode
Debug mode is entered by setting the HALT bit in the CANMCR, or by assertion of the BKPT line. In both
cases, the FRZ bit in CANMCR must also be set to allow HALT or BKPT to place the FlexCAN in debug
mode.
Once entry into debug mode is requested, the FlexCAN waits until an intermission or idle condition exists
on the CAN bus, or until the FlexCAN enters the error passive or bus off state. Once one of these
conditions exists, the FlexCAN waits for the completion of all internal activity. When this happens, the
following events occur:
After engaging one of the mechanisms to place the FlexCAN in debug mode, the user must wait for the
FRZACK bit to be set before accessing any other registers in the FlexCAN, otherwise unpredictable
operation may occur.
To exit debug mode, the BKPT line must be negated or the HALT bit in CANMCR must be cleared.
Once debug mode is exited, the FlexCAN will resynchronize with the CAN bus by waiting for 11
consecutive recessive bits before beginning to participate in CAN bus communication.
25.4.11.2 Low-Power Stop Mode for Power Saving
Before entering low-power stop mode, the FlexCAN will wait for the CAN bus to be in an idle state, or
for the third bit of intermission to be recessive. The FlexCAN then waits for the completion of all internal
activity (except in the CAN bus interface) to be complete. Afterwards, the following events occur:
Freescale Semiconductor
5. Negate the HALT bit in the module configuration register
•
•
•
•
•
•
•
•
•
a) At this point, the FlexCAN will attempt to synchronize with the CAN bus.
The FlexCAN stops transmitting/receiving frames.
The prescaler is disabled, thus halting all CAN bus communication.
The FlexCAN ignores its Rx pins and drives its Tx pins as recessive.
The FlexCAN loses synchronization with the CAN bus and the NOTRDY and FRZACK bits in
CANMCR are set.
The CPU is allowed to read and write the error counter registers.
The FlexCAN shuts down its clocks, stopping most internal circuits, thus achieving maximum
power savings.
The bus interface unit continues to operate, allowing the CPU to access the module configuration
register.
The FlexCAN ignores its Rx pins and drives its Tx pins as recessive.
The FlexCAN loses synchronization with the CAN bus, and the STOPACK and NOTRDY bits in
the module configuration register are set.
In both the transmit and receive processes, the first action in preparing a
message buffer should be to deactivate the buffer by setting its code field to
the proper value. This requirement is mandatory to assure data coherency.
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
NOTE
FlexCAN
25-15
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