參數(shù)資料
型號(hào): MB89T637PFM
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 10 MHz, MICROCONTROLLER, PQFP64
封裝: PLASTIC, QFP-64
文件頁(yè)數(shù): 29/56頁(yè)
文件大小: 884K
代理商: MB89T637PFM
MB89630 Series
35
(7) 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: This 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
s
ALE
↓ time → address loss
time
tLLAX
AD7 to 0, ALE
A15 to 08
5—
ns
Valid address
→ WR ↓ time tAVWL
WR, ALE
1/4
tinst*1 – 60 ns
s
WR pulse width
tWLWH
WR
1/2
tinst*1 – 20 ns
s
Write data
→ WR ↑ time
tDVWH
AD7 to 0, WR
1/2
tinst*1 – 60 ns
s
WR
↑ → address loss time tWHAX
WR, A15 to
08
1/4
tinst*1 – 40 ns
s
WR
↑ → data hold time
tWHDX
AD7 to 0, WR
1/4
tinst*1 – 40 ns
s
WR
↑ → ALE ↑ time
tWHLH
WR, ALE
1/4
tinst*1 – 40 ns
s
WR
↓ → CLK ↑ time
tWLCH
WR, CLK
1/4
tinst*1 – 40 ns
s
CLK
↓ → WR ↑ time
tCLWH
0—
ns
ALE pulse width
tLHLL
ALE
1/4
tinst*1 – 35 ns
s
ALE
↓ → CLK ↑ time
tLLCH
ALE,CLK
1/4
tinst*1 – 30 ns
s
A
AD
ALE
CLK
WR
0.8V
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
2.4 V
tCLWH
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
tLLAX
tLHLL
tLLCH
tAVLL
tDVWH
tWHDX
tWHAX
tWLWH
tWLCH
tAVWL
tWHLH
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