參數(shù)資料
型號: MB89643PF
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, QFP-80
文件頁數(shù): 32/59頁
文件大?。?/td> 774K
代理商: MB89643PF
38
MB89640 Series
(8) Bus Write Timing
(VCC = +5.0 V±10%, FCH = 10 MHz, AVSS = VSS = 0.0 V, TA = –40
°C to +85°C)
*1: For information on tinst, see “(4) Instruction Cycle.”
*2: These characteristics are also applicable to the bus read timing.
Parameter
Symbol
Pin
Condition
Value
Unit
Remarks
Min.
Max.
Valid address
→ ALE ↓ time
tAVLL
AD7 to 0, ALE,
A15 to 08
1/4 tinst*1 – 64 ns*2
—ns
ALE
↓ → address invalid time tLLAX
AD7 to 0, ALE,
A15 to 08
5—
ns
*2
Valid address
→ WR ↓ time
tAVWL
WR, ALE
1/4 tinst*1 – 60 ns
—ns
WR pulse width
tWLWH
WR
1/2 tinst*1 – 20 ns
—ns
Write data
→ WR ↑ time
tDVWH
AD7 to 0, WR
1/2 tinst*1 – 60 ns
—ns
WR
↑ → address invalid time
tWHAX
WR, A15 to 08
1/4 tinst*1 – 40 ns
—ns
WR
↑ → data hold time
tWHDX
AD7 to 0, WR
1/4 tinst*1 – 40 ns
—ns
WR
↑ → ALE ↑ time
tWHLH
WR, ALE
1/4 tinst*1 – 40 ns
—ns
WR
↓ → CLK ↑ time
tWLCH
WR, CLK
1/4 tinst*1 – 40 ns
—ns
CLK
↓ → WR ↑ time
tCLWH
WR, CLK
0
ns
ALE pulse width
tLHLL
ALE
1/4 tinst*1 – 35 ns*2
—ns
ALE
↓ → CLK ↑ time
tLLCH
ALE, CLK
1/4 tinst*1 – 30 ns*2
—ns
ALE
AD
A
WR
CLK
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
tAVWL
2.4 V
0.8 V
tCLWH
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
tLLAX
tWHLH
tLLCH
tLHLL
tAVLL
tDVWH
tWHDX
tWHAX
tWLWH
tWLCH
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