MCF51EM256CLK Freescale Semiconductor, MCF51EM256CLK Datasheet - Page 605

• Manufacturer Part Number: MCF51EM256CLK
• Description: IC MCU 32BIT 256KB FLASH 80LQFP
• Manufacturer: Freescale Semiconductor
• Series: MCF51EMr

Specifications of MCF51EM256CLK

• Core Processor: Coldfire V1
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, SCI, SPI
• Peripherals: LCD, LVD, PWM, WDT
• Number Of I /o: 56
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 12x16b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-LQFP
• Processor Series: MCF51EM
• Core: ColdFire V1
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: RS-232, LIN
• Maximum Clock Frequency: 50 MHz
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Development Tools By Supplier: DEMOEM
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

DUMP_MEM{_WS} is used with the READ_MEM{_WS} command to access large blocks of memory.
An initial READ_MEM{_WS} is executed to set-up the starting address of the block and to retrieve the
first result. If an initial READ_MEM{_WS} is not executed before the first DUMP_MEM{_WS}, an
illegal command response is returned. The DUMP_MEM{_WS} command retrieves subsequent
operands. The initial address is incremented by the operand size (1, 2, or 4) and saved in a temporary
register. Subsequent DUMP_MEM{_WS} commands use this address, perform the memory read,
increment it by the current operand size, and store the updated address in the temporary register. If the
with-status option is specified, the core status byte (XCSR_SB) contained in XCSR[31–24] is returned
before the read data. XCSR_SB reflects the state after the memory read was performed.
The size field (sz) is examined each time a DUMP_MEM{_WS} command is processed, allowing the
operand size to be dynamically altered. The examples show the DUMP_MEM.B{_WS},
DUMP_MEM.W{_WS} and DUMP_MEM.L{_WS} commands.
Freescale Semiconductor
Read memory specified by debug address register with status,
then increment address
DUMP_MEM{_WS} does not check for a valid address; it is a valid
command only when preceded by NOP, READ_MEM{_WS}, or another
DUMP_MEM{_WS} command. Otherwise, an illegal command response
is returned. NOP can be used for inter-command padding without corrupting
the address pointer.
MCF51EM256 Series ColdFire Integrated Microcontroller Reference Manual, Rev. 8
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target
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0x33
0x37
0x3B
D
D
D
L
Y
L
Y
L
Y
XCSR_SB
XCSR_SB
XCSR_SB
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DUMP_MEM.sz_WS
data[31-24]
data[15-8]
data[7-0]
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Memory
Memory
Memory
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host
NOTE
data[23-16]
data[7-0]
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Memory
Memory
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data[15-8]
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Memory
host
Version 1 ColdFire Debug (CF1_DEBUG)
Non-intrusive
data[7-0]
Memory
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