MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 453

• Manufacturer Part Number: MCF5272VF66
• Manufacturer: Freescale

Specifications of MCF5272VF66

• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 66MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Not Compliant

Figure 20-2
The four bytes shown are connected through the internal data bus and data multiplexer to the external data
bus. This path is how the MCF5272 supports programmable port sizing and operand misalignment. The
data multiplexer establishes the necessary connections for different combinations of address and data
sizes.
The multiplexer takes the four bytes of the 32-bit bus and routes them to their required positions. For
example, OP3 can be routed to D[7:0], as would be the normal case when interfacing to a 32-bit port. OP3
can be routed to D[23:16] for interfacing to a 16-bit port, or it can be routed to D[31:24] for interfacing to
an 8-bit port. The operand size, address, and port size of the memory being accessed determines the
positioning of bytes.
Freescale Semiconductor
REGISTER
MULTIPLEXER
EXTERNAL
ADDRESS
DATA BUS
shows the required organization of data ports on the MCF5272 for 8-, 16-, and 32 bit devices.
31
A1
OP0
0
0
1
0
0
1
1
MCF5272 ColdFire
A0
Figure 20-2. MCF5272 Interface to Various Port Sizes
0
0
0
0
1
0
1
Figure 20-1. Internal Operand Representation
OP1
D[31:24]
BYTE 0
BYTE 0
BYTE 2
BYTE 0
BYTE 1
BYTE 2
BYTE 3
OP0
®
ROUTING AND DUPLICATION
Integrated Microprocessor User’s Manual, Rev. 3
15
OP2
D[23:16]
OP2
BYTE 1
BYTE 1
BYTE 3
OP1
8-BIT PORT
7
BYTE 2
D[15:8]
OP3
OP3
OP2
OP3
16-BIT PORT
0
0
0
BYTE 3
D[7:0]
OP3
LONGWORD OPERAND
BYTE OPERAND
WORD OPERAND
32-BIT PORT
INTERNAL TO
MCF5272
Bus Operation
20-5