W77LE58_07 Datasheet, PDF (26/82 Pages) Winbond – 8-BIT MICROCONTROLLER

W77LE58/W77L058A
The advantage the W77L058 has is that since there is only one fetch per machine cycle, the number
of machine cycles in most cases is equal to the number of operands that the instruction has. In case
of jumps and calls there will be an additional cycle that will be needed to calculate the new address.
But overall the W77L058 reduces the number of dummy fetches and wasted cycles, thereby improving
efficiency as compared to the standard 8032.
6.1.1 Table 2. Instructions that affect Flag settings
INSTRUCTION
CARRY
OVER
FLOW
AUXILIARY
CARRY
INSTRUCTION
ADD
X
X
X
CLR C
ADDC
SUBB
MUL
DIV
DA A
RRC A
RLC A
SETB C
X
X
X
X
0
X
0
X
X
X
X
1
X
CPL C
X
ANL C, bit
ANL C, bit
ORL C, bit
ORL C, bit
MOV C, bit
CJNE
A "X" indicates that the modification is as per the result of instruction.
CARRY
0
X
X
X
X
X
X
X
OVER
FLOW
AUXILIARY
CARRY
6.1.2 Table 3. Instruction Timing for W77L058
INSTRUCTION
NOP
ADD A, R0
ADD A, R1
ADD A, R2
ADD A, R3
ADD A, R4
ADD A, R5
ADD A, R6
ADD A, R7
ADD A, @R0
ADD A, @R1
ADD A, direct
ADD A, #data
ADDC A, R0
ADDC A, R1
ADDC A, R2
ADDC A, R3
ADDC A, R4
HEX
OP-CODE
00
28
29
2A
2B
2C
2D
2E
2F
26
27
25
24
38
39
3A
3B
3C
BYTES
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
W77L058
MACHINE
CYCLES
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
W77L058
8032
CLOCK CYCLES CLOCK CYCLES
W77L058 VS.
8032 SPEED
RATIO
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
8
12
1.5
8
12
1.5
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
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