MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 369

• Manufacturer Part Number: MCF5253VM140J
• Description: IC MCU 2.1MIPS 140MHZ 225MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253VM140J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, WDT
• Program Memory Type: ROMless
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 225-MAPBGA
• Processor Series: MCF525x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

It will attempt to read the file IDEBOOT1.IDE and then verify the checksum. If this fails it tries
IDEBOOT2.IDE eventually followed by IDEBOOT3.IDE.
Typically, the data in the boot file is a second stage boot loader which performs the system initialization
(SDRAM etc) and loads the application code.
This second stage boot loader now performs the system boot, allowing the boot process to be customized,
supporting different file systems, if necessary.
19.3
For serial boot modes typically at least two boot record headers must be added to the raw binary file
generated by the user code. The first must be at the start of the file and should be a ‘Store Immediate’
header with an appropriate load address and byte count, the second, an ‘Execute’ header, should be at the
end of the file with an appropriate execute address.
Multiple ‘Store Immediate’ headers can be used if several separate blocks of data need to be loaded before
code execution can begin.
Example utilities are available from Freescale to generate appropriate boot record files if required, contact
your local Freescale representative for further details.
Freescale Semiconductor
Creating Appropriate Boot Record Files
MCF5253 Interface
A1-A5
RW
BUFENB2
D31-D15
IDE_DIOW
IDE_DIOR
IDE_IORDY
GPIO04
GPIO18
Figure 19-2. Boot Loader IDE Interface
MCF5253 Reference Manual, Rev. 1
74LCX16245
DIR
OE
74LCX16245
DIR
OE
IDE Interface
A0-A2
CS0, CS1
D15-D0
IOW
IOR
IORDY
IRQ
RESET
Boot ROM
19-7