MC68360EM25VL Freescale Semiconductor, MC68360EM25VL Datasheet - Page 93

• Manufacturer Part Number: MC68360EM25VL
• Description: IC MPU QUICC 25MHZ 240-FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68360EM25VL

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Figure 4-12 and Figure 4-13 show an example of a long-word transfer to an odd address in
long-word-organized memory. In this example, a long-word access is attempted beginning
at the least significant byte of a long-word-organized memory. Only one byte can be trans-
ferred in the first bus cycle. The second bus cycle then consists of a three-byte access to a
long-word boundary. Since the memory is long-word organized, no further bus cycles are
necessary.
Figure 4-11. Misaligned Word Transfer to Word Port Timing
FC3–FC0
D31–D24
D23–D16
DSACK0
DSACK1
D15–D8
CLKO1
A31–A2
D7–D0
SIZ1
SIZ0
R/W
AS
DS
A1
A0
Freescale Semiconductor, Inc.
For More Information On This Product,
S0
MC68360 USER’S MANUAL
Go to: www.freescale.com
WORD WRITE
S2
WORD OPERAND WRITE TO A1/A0 = 01
0P2
0P3
0P2
0P2
S4
S0
BYTE WRITE
S2
0P3
0P3
0P3
0P3
S4
Bus Operation