MCF5253CVM140 Freescale Semiconductor, MCF5253CVM140 Datasheet - Page 366

• Manufacturer Part Number: MCF5253CVM140
• Description: IC MPU 32BIT 140MHZ 225-MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253CVM140

• 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: -40°C ~ 85°C
• Package / Case: 225-MAPBGA
• Family Name: MCF5xxx
• Device Core: ColdFire V2
• Device Core Size: 32b
• Frequency (max): 140MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 1.2/3.3V
• Operating Supply Voltage (max): 1.32/3.6V
• Operating Supply Voltage (min): 1.08/3V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 225
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Compliant

Boot ROM
19.2.3
All serial boot modes use the same data structure to read data from the external device. All data is
organized in boot records. The boot loader reads one or more boot records and processes the data according
to the command which is supplied in the boot record header. A boot record has the following structure:
The first byte of a boot record is a sync byte with value 0x55. The boot-loader will ignore all data up to
and including this byte. The second byte contains the command to execute and the data width of the
data/code section. The command is coded in the upper nibble; the size is coded in the lower nibble. The
size specification defines the word length to be used to store the data in the MCF5253 memory space. This
allows writing to registers through the boot loader.
The following tables describe the encoding of the command and size bits:
19.2.3.1
The destination address is the base address for the data in the boot record. Data will be stored sequentially
starting at this address.
The Byte Count (BC) is the number of data bytes in the boot record. After the loader has read the number
of bytes specified, it assumes the next byte to be the start of a new record.
The data/code section in a command block contains the actual data to be written. This section can be empty
(BC=0). Typically used to start program execution at the address specified in the address field.
19-4
Serial Boot Data Format
Command Encoding/Size Encoding
Offset
10
0
1
2
6
# Bytes
BC
Store Immediate
1
1
4
4
MCF5253 Reference Manual, Rev. 1
Command
Table 19-3. Command Bits
Table 19-2. Boot Records
Execute
Long Word
Table 19-4. Size Bits
Word
Size
Byte
Sync Byte (0x55)
Command/Data width (byte, word, longword)
Destination address in MCF5253 memory space
Number of bytes in data/code section (BC)
Data/Code section
0b0001
0b0011
0b0001
0b0010
0b0100
Code
Code
Description
Freescale Semiconductor