MC68030CRC25C Freescale Semiconductor, MC68030CRC25C Datasheet - Page 472
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MC68030CRC25C
Manufacturer Part Number
MC68030CRC25C
Description
IC MPU 32BIT ENHANCED 128-PGA
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68030FE20C.pdf
(599 pages)
Specifications of MC68030CRC25C
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
128-PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
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- Download datasheet (23Mb)
~ N S T R U O T ~ O N
MOTOROLA
CONTROLLER
S E Q U E N C E R
EXECUTI O N
ACTIVITY
COUNT
TIME
BUS
BUS
CLK
CLK
tion stream. It shows the activity of the external bus, the bus controller, and
the sequencer.
The effect of instruction alignment on timing is illustrated b y t h e following
example. The assumptions referred to in 11.6 INSTRUCTION TIMING TABLES
apply. Both the data cache and instruction cache miss on all accesses.
The instruction stream is positioned with even alignment in 32-bit memory
as:
Figure 11-4 shows processor activity for even alignment of the given instruc-
Address
~
1
2
CALCULATE AND FETCH
13
n+8
n+12
n+4
Figure 11-4. Processor Activity - - Even A l i g n m e n t
S O U R C E EA
FOR MOVE
3
MovEi d B An Dn Dn
4
8
2.
1.
MC68030 USER'S MANUAL
LEGEND:
5
MOVE.L (d16,An,Dn),Dn
MOVE.L
CMPI.W
#(data.W)
#(data)'W,(d16,An)
;
MOVE
6
d16
M O V E
Instruction
7
~ I
(d16,An,Dn),Dn
#(data/.W,(d16,An)
8
~
CALCULATE AND FETCH
IDLE
10
EA Ext
CMPI
SOURCE EA
FOR CMPI
d 16
9
I READ FROM
I
11
CMPI.W #(data).W,(d16,An)
(d]6,An)
12
8
13
PREFETCH
n + 16
IDLE
14
15
PERFORM
CMPI
IDLE
16
11-9
11
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