參數(shù)資料
型號: MB89P647
廠商: Fujitsu Limited
英文描述: 8-Bit Proprietary Microcontroller(8位專用微控制器)
中文描述: 8位微控制器專利(8位專用微控制器)
文件頁數(shù): 38/58頁
文件大?。?/td> 424K
代理商: MB89P647
38
MB89640 Series
(8) Bus Write Timing
(V
CC
= +5.0 V
±
10%, F
CH
= 10 MHz, AV
SS
= V
SS
= 0.0 V, T
A
= –40
°
C to +85
°
C)
Value
Min.
AD7 to 0, ALE,
A15 to 08
AD7 to 0, ALE,
A15 to 08
WR, ALE
1/4 t
inst*1
– 60 ns
WR
1/2 t
inst*1
– 20 ns
AD7 to 0, WR
1/2 t
inst*1
– 60 ns
WR, A15 to 08
1/4 t
inst*1
– 40 ns
AD7 to 0, WR
1/4 t
inst*1
– 40 ns
WR, ALE
1/4 t
inst*1
– 40 ns
WR, CLK
1/4 t
inst*1
– 40 ns
WR, CLK
0
ALE
1/4 t
inst*1
– 35 ns
*2
ALE, CLK
1/4 t
inst*1
– 30 ns
*2
*1: For information on t
inst
, see “(4) Instruction Cycle.”
*2: These characteristics are also applicable to the bus read timing.
Parameter
Symbol
Pin
Condition
Unit
Remarks
Max.
Valid address
ALE
time
t
AVLL
1/4 t
inst*1
– 64 ns
*2
ns
ALE
address invalid time
t
LLAX
5
ns
*2
Valid address
WR
time
WR pulse width
Write data
WR
time
WR
address invalid time
WR
data hold time
WR
ALE
time
WR
CLK
time
CLK
WR
time
ALE pulse width
ALE
CLK
time
t
AVWL
t
WLWH
t
DVWH
t
WHAX
t
WHDX
t
WHLH
t
WLCH
t
CLWH
t
LHLL
t
LLCH
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ALE
AD
A
WR
CLK
2.4 V
0.8 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
t
CLWH
t
WHAX
2.4 V
0.8 V
t
AVWL
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
t
LLAX
t
WHLH
t
LLCH
t
LHLL
t
AVLL
t
DVWH
t
WHDX
t
WLWH
t
WLCH
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