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參數資料
型號: W78LE516A
廠商: WINBOND ELECTRONICS CORP
元件分類: 8位微控制器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8位微控制器
文件頁數: 25/37頁
文件大小: 256K
代理商: W78LE516A
W78LE516/W78L516A
Publication Release Date: November 6, 2006
- 25 -
Revision A7
Data Read Cycle
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
NOTES
T
DAR
-
nS
1, 2
3 T
CP+
Δ
3 T
CP
-
Δ
ALE Low to
RD
Low
T
DDA
RD
Low to Data Valid
-
-
4 T
CP
nS
1
T
DDH
2 T
CP
0
-
nS
Data Hold from
RD
High
T
DDZ
Data Float from
RD
High
0
-
2 T
CP
nS
T
DRD
-
nS
2
6 T
CP
6 T
CP
-
Δ
RD
Pulse Width
Notes:
1. Data memory access time is 8 T
CP
.
2. "
Δ
" (due to buffer driving delay and wire loading) is 20 nS.
Data Write Cycle
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
T
DAW
-
nS
3 T
CP
-
Δ
3 T
CP
+
Δ
ALE Low to
WR
Low
T
DAD
-
-
nS
1 T
CP
-
Δ
Data Valid to
WR
Low
T
DWD
-
-
nS
1 T
CP
-
Δ
Data Hold from
WR
High
T
DWR
6 T
CP
-
nS
6 T
CP
-
Δ
WR
Pulse Width
Note:
"
Δ
" (due to buffer driving delay and wire loading) is 20 nS.
Port Access Cycle
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Port Input Setup to ALE Low
T
PDS
1 TCP
-
-
nS
Port Input Hold from ALE Low
T
PDH
0
-
-
nS
Port Output to ALE
T
PDA
1 TCP
-
-
nS
Note:
Ports are read during S5P2, and output data becomes available at the end of S6P2. The timing data are referenced to
ALE, since it provides a convenient reference.
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