w79e532 Winbond Electronics Corp America, w79e532 Datasheet - Page 65

• Manufacturer Part Number: w79e532
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

18.3.2 MOVX Characteristics Using Strech Memory Cycle
Note: t
Data Access ALE Pulse Width
Address Hold After ALE Low for
MOVX write
Data Hold after Read
Data Float after Read
ALE Low to Valid Data In
Port 0 Address to Valid Data In
ALE Low to
Port 0 Address to
Low
Port 2 Address to
Low
Data Valid to WR Transition
Data Hold after Write
RD
RD
RD
RD
WR
for each selection of the Stretch value.
MCS
Pulse Width
Low to Valid Data In
Low to Address Float
or WR high to ALE high
Pulse Width
is a time period related to the Stretch memory cycle selection. The following table shows the time period of t
PARAMETER
RD
or
RD
RD
WR
or
or
Low
WR
WR
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
AVWL2
t
WLWH
t
AVDV1
LLAX2
QVWX
WHQX
WHLH
LLHL2
RHDX
AVWL
RLRH
RLDV
RHDZ
LLWL
LLDV
RLAZ
1.5t
2.0t
0.5t
2.0t
t
2.0t
t
0
0.5t
1.5t
t
2.0t
1.5t
2.5t
-5
1.0t
t
2.0t
0
1.0t
MCS
MCS
CLCL
CLCL
VARIABLE
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
- 10
- 10
CLOCK
- 5
- 5
- 65 -
MIN.
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
- 5
Publication Release Date: November 21, 2005
2.0t
t
t
2.0t
2.5t
t
3.0t
2.0t
0.5t
1.5t
0.5t
10
1.0t
MCS
CLCL
MCS
VARIABLE
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
- 20
+ 2t
W79E532/W79L532
CLOCK
- 5
MAX.
- 20
- 5
- 5
- 20
- 5
+ 5
+ 5
- 5
+ 5
CLCL
- 40
UNITS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
Revision A5
STRECH
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
MCS
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
= 0
>0
>0
>0
>0
>0
>0
>0
>0
>0
>0
>0
>0
>0