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參數(shù)資料
型號(hào): W77IC32-25
廠商: WINBOND ELECTRONICS CORP
元件分類(lèi): 微控制器/微處理器
英文描述: 8 BIT MICROCONTROLLER
中文描述: 8-BIT, 25 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁(yè)數(shù): 65/70頁(yè)
文件大小: 375K
代理商: W77IC32-25
Preliminary W77IC32
Publication Release Date: March 2000
- 65 - Revision A0
MOVX Characteristics Using Strech Memory Cycles
PARAMETER
SYM.
VARIABLE
CLOCK
MIN.
VARIABLE
CLOCK
MAX.
UNITS
STRECH
Data Access ALE Pulse Width
t
LLHL2
1.5 t
CLCL
- 5
2.0 t
CLCL
- 5
0.5 t
CLCL
- 5
nS
t
MCS
= 0
t
MCS
> 0
Address Hold After ALE Low for
MOVX Write
t
LLAX2
nS
RD
Pulse Width
t
RLRH
2.0 t
CLCL
- 5
t
MCS
- 10
2.0 t
CLCL
- 5
t
MCS
- 10
nS
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
WR
Pulse Width
t
WLWH
nS
RD
Low to Valid Data In
t
RLDV
2.0 t
CLCL
- 20
t
MCS
- 20
nS
Data Hold after Read
t
RHDX
t
RHDZ
0
nS
Data Float after Read
t
CLCL
- 5
2.0 t
CLCL
- 5
2.5 t
CLCL
- 5
t
MCS
+ 2t
CLCL
- 40
3.0 t
CLCL
- 20
2.0t
CLCL
- 5
3.5 t
CLCL
- 20
2.5 t
CLCL
- 5
0.5 t
CLCL
+ 5
1.5 t
CLCL
+ 5
nS
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
ALE Low to Valid Data In
t
LLDV
nS
Port 0 Address to Valid Data In
t
AVDV1
nS
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
t
MCS
= 0
t
MCS
> 0
Port 2 Address to Valid Data In
t
AVDV2
nS
ALE Low to
RD
or
WR
Low
t
LLWL
0.5 t
CLCL
- 5
1.5 t
CLCL
- 5
t
CLCL
- 5
2.0 t
CLCL
- 5
1.5 t
CLCL
- 5
2.5 t
CLCL
- 5
-5
1.0 t
CLCL
- 5
t
CLCL
- 5
2.0 t
CLCL
- 5
nS
Port 0 Address to
RD
or
WR
Low
t
AVWL
nS
Port 2 Address to
RD
or
WR
Low
t
AVWL2
nS
Data Valid to
WR
Transition
t
QVWX
nS
Data Hold after Write
t
WHQX
nS
RD
Low to Address Float
t
RLAZ
0.5 t
CLCL
- 5
nS
RD
or
WR
High to ALE High
t
WHLH
0
1.0 t
CLCL
- 5
10
1.0 t
CLCL
+ 5
nS
t
MCS
= 0
t
MCS
> 0
Note: t
MCS
is a time period related to the Stretch memory cycle selection. The following table shows the time period of t
MCS
for each
selection of the Stretch value.
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