W77C58 Datasheet, PDF (66/71 Pages) Winbond – 8 BIT MICROCONTROLLER

Preliminary W77C58
M2
M1
M0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
MOVX Cycles
2 machine cycles
3 machine cycles
4 machine cycles
5 machine cycles
6 machine cycles
7 machine cycles
8 machine cycles
9 machine cycles
t_MCS
0
4 t_CLCL
8 tCLCL
12 tCLCL
16 t_CLCL
20 tCLCL
24 t_CLCL
28 tCLCL
Explanation of Logic Symbols
In order to maintain compatibility with the original 8051 family, this device specifies the same
parameter for each device, using the same symbols. The explanation of the symbols is as follows.
t
Time
C
Clock
H
Logic level high
I
Instruction
Q
Output Data
V
Valid
X
No longer a valid state
A
Address
D
Input Data
L
Logic level low
P
PSEN
R
RD signal
W
WR signal
Z
Tri-state
TIMING WAVEFORMS
Program Memory Read Cycle
ALE
PSEN
PORT 0
PORT 2
tLHLL
tAVLL
tLLIV
t_LLAX1
tPLPH
tPLIV
tLLPL
tPLAZ
tPXIX
tPXIZ
ADDRESS
A0-A7
tAVIV1
tAVIV2
INSTRUCTION
IN
ADDRESS A8-A15
ADDRESS
A0-A7
ADDRESS A8-A15
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