MB90F654A FUJITSU [Fujitsu Component Limited.], MB90F654A Datasheet - Page 104

• Manufacturer Part Number: MB90F654A
• Description: 16-bit Proprietary Microcontroller
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

104
MB90650A Series
Note: “(a)” is used in the “~” (number of states) column and column B (correction value) in the tables of instructions.
Notes: “(b)”, “(c)”, and “(d)” are used in the “~” (number of states) column and column B (correction value)
Notes: When the external data bus is used, it is necessary to add in the number of wait cycles used for ready
Internal register
Internal memory even address
Internal memory odd address
Even address on external data bus (16 bits)
Odd address on external data bus (16 bits)
External data bus (8 bits)
Internal memory
External data bus (16 bits)
External data bus (8 bits)
Table 6
0C to 0F
08 to 0B
18 to 1B
00 to 07
10 to 17
Table 5
Code
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.
Because instruction execution is not slowed down by all program fetches in actuality, these correction
values should be used for “worst case” calculations.
1C
1D
1E
1F
input and automatic ready.
Correction Values for Number of Cycles Used to Calculate Number of Program Fetch Cycles
Instruction
Correction Values for Number of Cycles Used to Calculate Number of Actual Cycles
Operand
Table 4
Ri
RWi
RLi
@RWj
@RWj +
@RWi + disp8
@RWj + disp16
@RW0 + RW7
@RW1 + RW7
@PC + disp16
addr16
Operand
Number of Execution Cycles for Each Type of Addressing
of cycles
Number
Listed in tables of instructions
Number of execution cycles
for each type of addressing
+0
+0
+0
+1
+1
+1
Byte boundary
(b) byte
+3
of access
—
—
Number
1
1
1
1
1
1
(a)
2
4
2
2
4
4
2
1
of cycles
Number
+0
+0
+2
+1
+4
+4
(c) word
of access
Number
Listed in tables of instructions
accesses for each type of
1
1
2
1
2
2
Number of register
Word boundary
addressing
of cycles
Number
+2
+3
—
+0
+0
+4
+2
+8
+8
1
2
1
1
2
2
0
0
(d) long
of access
Number
2
2
4
2
4
4