MC68020RC25E Freescale Semiconductor, MC68020RC25E Datasheet - Page 230
MC68020RC25E
Manufacturer Part Number
MC68020RC25E
Description
IC MICROPROC 32-BIT 25MHZ 114PGA
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68020EH16E.pdf
(306 pages)
Specifications of MC68020RC25E
Processor Type
M680x0 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
114-PGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Other names
Q1165253
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68020RC25E
Manufacturer:
MOT
Quantity:
28
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8.2.3 Calculate Effective Address
The calculate immediate effective address table indicates the number of clock periods
needed for the processor to calculate the specified effective address. Fetch time is only
included for the first level of indirection on memory indirect addressing modes. The total
number of clock cycles is outside the parentheses; the number of read, prefetch, and write
cycles is given inside the parentheses as (r/p/w). These cycles are included in the total
clock cycle number.
B = Base address; 0, An, PC, Xn, An + Xn. Form does not affect timing.
I
NOTE: Xn cannot be in B and I at the same time. Scaling and size of Xn do not affect timing.
8-16
Dn
An
(An)
(An)+
–(An)
(d 16 ,An) or (d 16 ,PC)
<data >.W
<data >.L
(d
(d
(B)
(d
(d
([B],I)
([B],I,d
([B],I,d
([d
([d
([d
([d
([d
([d
8
16
16
32
16
16
16
32
32
32
= Index; 0, Xn
,An,Xn) or (d
,An,Xn) or (d
,B)
,B)
,B],I)
,B],I,d
,B],I,d
,B],I)
,B],I,d
,B],I,d
16
32
)
)
16
32
16
32
)
)
)
)
8
,PC,Xn)
16
,PC,Xn)
Address Mode
Freescale Semiconductor, Inc.
For More Information On This Product,
M68020 USER’S MANUAL
Go to: www.freescale.com
Best Case
10(1/0/0)
10(1/0/0)
10(1/0/0)
12(1/0/0)
12(1/0/0)
14(1/0/0)
16(1/0/0)
16(1/0/0)
0(0/0/0)
0(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
1(0/0/0)
1(0/0/0)
3(0/0/0)
3(0/0/0)
5(0/0/0)
9(0/0/0)
8(1/0/0)
Cache Case
12(0/0/0)
11(1/0/0)
13(1/0/0)
13(1/0/0)
13(1/0/0)
15(1/0/0)
15(1/0/0)
17(1/0/0)
19(1/0/0)
19(1/0/0)
0(0/0/0)
0(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
4(0/0/0)
4(0/0/0)
6(0/0/0)
6(0/0/0)
8(0/0/0)
Worst Case
MOTOROLA
10(0/1/0)
15(0/2/0)
12(1/1/0)
15(1/1/0)
16(1/2/0)
15(1/1/0)
18(1/2/0)
19(1/2/0)
19(1/2/0)
21(1/2/0)
24(1/3/0)
0(0/0/0)
0(0/0/0)
2(0/0/0)
2(0/0/0)
2(0/0/0)
3(0/1/0)
3(0/1/0)
5(0/1/0)
5(0/1/0)
7(0/1/0)
7(0/1/0)
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