MB90P663APFM View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB90P663APFM Datasheet PDF : 84 Pages
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MB90660A Series
Table 4 Number of Execution Cycles for Each Type of Addressing
Code
00 to 07
08 to 0B
0C to 0F
10 to 17
18 to 1B
1C
1D
1E
1F
Operand
Ri
RWi
RLi
@RWj
@RWj +
@RWi + disp8
@RWj + disp16
@RW0 + RW7
@RW1 + RW7
@PC + disp16
addr16
(a)
Number of execution cycles
for each type of addressing
Number of register
accesses for each type of
addressing
Listed in tables of instructions Listed in tables of instructions
2
1
4
2
2
1
2
1
4
2
4
2
2
0
1
0
Note: “(a)” is used in the “~” (number of states) column and column B (correction value) in the tables of instructions.
Table 5 Correction Values for Number of Cycles Used to Calculate Number of Actual Cycles
Operand
(b) byte
(c) word
(d) long
Number Number Number Number Number Number
of cycles of access of cycles of access of cycles of access
Internal register
+0
1
+0
1
+0
2
Internal memory even address
Internal memory odd address
+0
1
+0
1
+0
2
+0
1
+2
2
+4
4
Even address on external data bus (16 bits) +1
1
+1
1
+2
2
Odd address on external data bus (16 bits)
+1
1
+4
2
+8
4
External data bus (8 bits)
+1
1
+4
2
+8
4
Notes: • “(b)”, “(c)”, and “(d)” are used in the “~” (number of states) column and column B (correction value)
in the tables of instructions.
• When the external data bus is used, it is necessary to add in the number of wait cycles used for ready
input and automatic ready.
Table 6 Correction Values for Number of Cycles Used to Calculate Number of Program Fetch Cycles
Instruction
Internal memory
External data bus (16 bits)
External data bus (8 bits)
Byte boundary
—
—
+3
Word boundary
+2
+3
—
Notes: • When the external data bus is used, it is necessary to add in the number of wait cycles used for ready
input and automatic ready.
• Because instruction execution is not slowed down by all program fetches in actuality, these correction
values should be used for “worst case” calculations.
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