W77IE58_06 Datasheet, PDF (41/82 Pages) Winbond – 8-BIT MICROCONTROLLER

W77IE58/W77I058A
Table 4. Data Memory Cycle Stretch Values
M2
M1
M0
MACHINE
CYCLES
RD OR WR STROBE
WIDTH IN CLOCKS
0
0
0
2
2
0
0
1
3(default)
4
0
1
0
4
8
0
1
1
5
12
1
0
0
6
16
1
0
1
7
20
1
1
0
8
24
1
1
1
9
28
RD OR WR STROBE
WIDTH @ 25 MHZ
80 nS
160 nS
320 nS
480 nS
640 nS
800 nS
960 nS
1120 nS
CLK
ALE
PSEN
WR
PORT 0
PORT 2
Last Cycle
of Previous
Instruction
First
Machine cycle
Second
Machine cycle
MOVX instruction cycle
Next Instruction
Machine Cycle
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
A0-A7
D0-D7
A0-A7
D0-D7
A0-A7
D0-D7
A0-A7
D0-D7
MOVX Inst.
Address
Next Inst.
Address
MOVX Data
Address
MOVX Inst.
Next Inst. Read MOVX Data out
A15-A8
A15-A8
A15-A8
A15-A8
Figure 8. Data Memory Write with Stretch Value = 0
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Publication Release Date: November 10, 2006
Revision A7