MC68360VR25VL Freescale Semiconductor, MC68360VR25VL Datasheet - Page 122
MC68360VR25VL
Manufacturer Part Number
MC68360VR25VL
Description
IC MPU QUICC 25MHZ 357-PBGA
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68EN360VR25L.pdf
(14 pages)
2.MC68EN360VR25L.pdf
(2 pages)
3.MC68360AI25L.pdf
(962 pages)
Specifications of MC68360VR25VL
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
3.3V
Mounting Type
Surface Mount
Package / Case
357-PBGA
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
25MHz
Instruction Set Architecture
RISC
Operating Supply Voltage (max)
3.3V
Operating Supply Voltage (min)
2.7V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
357
Package Type
BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Compliant
Available stocks
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Quantity
Price
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MC68360VR25VL
Manufacturer:
Exar
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Company:
Part Number:
MC68360VR25VL
Manufacturer:
Freescale Semiconductor
Quantity:
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Bus Operation
4.5.3 Halt Operation
When HALT is asserted and BERR is not asserted, the QUICC halts external bus activity at
the next bus cycle boundary (see Figure 4-33). HALT by itself does not terminate a bus
cycle. HALT affects external bus cycles only; thus, a program that does not require use of
the external bus may continue executing until it requires use of the external bus.
Negating and reasserting HALT in accordance with the correct timing requirements provides
a single step (bus cycle to bus cycle) operation. The single-cycle mode allows the user to
proceed through (and debug) external QUICC operations, one bus cycle at a time. Since the
occurrence of a bus error while HALT is asserted causes a retry operation, the user must
anticipate retry cycles while debugging in the single-cycle mode. The single-step operation
and the software trace capability allow the system debugger to trace single bus cycles, sin-
gle instructions, or changes in program flow.
4-46
tire word access will be retried. This is true even if the relinquish
and retry was asserted on the second access and the first 8-bit
access was completed normally.
FC3–FC0
D31–D10
DSACKx
A31–A0
CLKO1
BERR
HALT
R/W
AS
DS
S0
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 4-32. Late Retry Sequence
S2
WRITE
CYCLE
MC68360 USER’S MANUAL
Go to: www.freescale.com
S4
HALT
S0
S2
RERUN
WRITE
S4
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