mc68ec020 Freescale Semiconductor, Inc, mc68ec020 Datasheet - Page 228

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mc68ec020

Manufacturer Part Number
mc68ec020
Description
Microprocessors
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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8.2.2 Fetch Immediate Effective Address
The fetch immediate effective address table indicates the number of clock periods needed
for the processor to fetch the immediate source operand and calculate and fetch the
specified destination operand. 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.
8-14
#<data >.W,Dn
#<data >.L,Dn
#<data >.W,(An)
#<data >.L,(An)
#<data >.W,(An)+
#<data >.L,(An)+
#<data >.W,–(An)
#<data >.L,–(An)
#<data >.W,(bd,An)
#<data >.L,(bd,An)
#<data >.W,xxx.W
#<data >.L,xxx.W
#<data >.W,xxx.L
#<data >.L,xxx.L
#<data >.W,#<data >.B,W
#<data >.L,#<data>.B,W
#<data >.W,#<data >.L
#<data >.L,#(data>.L
#<data >.W,(d 8 ,An,Xn) or (d 8 ,PC,Xn)
#<data >.L,(d 8 ,An,Xn) or (d 8 ,PC,Xn)
#<data >.W,(d 16 ,An,Xn) or (d 16 ,PC,Xn)
#<data >.L,(d 16 ,An,Xn) or (d 16 ,PC,Xn)
#<data >.W,(B)
#<data >.L,(B)
#<data >.W,(bd,PC)
#<data >.L,(bd,PC)
#<data >.W,(d 16 ,B)
#<data >.L,(d 16 ,B)
#<data >.W,(d 32 ,B)
#<data >.L,(d 32 ,B)
#<data >.W,([B],I)
#<data >.L,([B],I)
#<data >.W,([B],I,d 16 )
#<data >.L,([B],I,d 16 )
Address Mode
M68020 USER’S MANUAL
Best Case
10(1/0/0)
11(1/0/0)
10(1/0/0)
11(1/0/0)
10(2/0/0)
11(2/0/0)
12(2/0/0)
0(0/0/0)
1(0/0/0)
3(1/0/0)
3(1/0/0)
4(1/0/0)
5(1/0/0)
3(1/0/0)
4(1/0/0)
3(1/0/0)
4(1/0/0)
3(1/0/0)
4(1/0/0)
3(1/0/0)
4(1/0/0)
0(0/0/0)
1(0/0/0)
0(0/0/0)
1(0/0/0)
4(1/0/0)
5(1/0/0)
4(1/0/0)
5(1/0/0)
4(1/0/0)
5(1/0/0)
6(1/0/0)
7(1/0/0)
9(2/0/0)
Cache Case
11(1/0/0)
11(1/0/0)
11(1/0/0)
15(1/0/0)
17(1/0/0)
11(1/0/0)
13(1/0/0)
15(1/0/0)
17(1/0/0)
14(2/0/0)
16(2/0/0)
16(2/0/0)
18(2/0/0)
2(0/0/0)
4(0/0/0)
4(1/0/0)
4(1/0/0)
6(1/0/0)
8(1/0/0)
5(1/0/0)
7(1/0/0)
5(1/0/0)
7(1/0/0)
5(1/0/0)
7(1/0/0)
6(1/0/0)
8(1/0/0)
4(0/0/0)
6(0/0/0)
6(0/0/0)
8(0/0/0)
9(1/0/0)
9(1/0/0)
9(1/0/0)
Worst Case
MOTOROLA
10(1/2/0)
10(1/2/0)
10(1/2/0)
12(1/2/0)
10(0/2/0)
11(1/2/0)
13(1/2/0)
12(1/2/0)
15(1/2/0)
12(1/1/0)
14(1/2/0)
19(1/3/0)
21(1/3/0)
15(1/2/0)
17(1/2/0)
19(1/3/0)
21(1/3/0)
16(2/2/0)
18(2/2/0)
19(2/2/0)
21(2/2/0)
3(0/1/0)
5(0/1/0)
4(1/1/0)
7(1/1/0)
7(1/1/0)
9(1/1/0)
6(1/1/0)
8(1/1/0)
7(1/1/0)
7(1/1/0)
6(0/2/0)
8(0/2/0)
8(0/2/0)

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