參數(shù)資料
型號: MB89W857C-SH
元件分類: 微控制器/微處理器
英文描述: 8-BIT, UVPROM, 10 MHz, MICROCONTROLLER, CDIP64
封裝: SHRINK, CERAMIC, DIP-64
文件頁數(shù): 25/51頁
文件大?。?/td> 798K
代理商: MB89W857C-SH
31
MB89860/850 Series
(8) Bus Write Timing
(VCC = +5.0 V
±10%, FC = 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 (10 MHz)
Unit
Remarks
Min.
Max.
Valid address
→ ALE ↓
time
tAVLL
AD7 to AD0,
ALE,A15toA08
Load
condition:
50 pF
1/4tinst*1–64ns
—ns
ALE
↓ time → address
invalid time
tLLAX
5—
ns
Validaddress
→WR↓time tAVWL
WR, ALE
1/4tinst*1–60ns
—ns
WR pulse width
tWLWH
WR
1/2tinst*1–20ns
—ns
Write data
→ WR ↑ time tDVWH
AD7toAD0,WR
1/2tinst*1–60ns
—ns
WR
↑ → address invalid
time
tWHAX
WR,A15toA08
1/4tinst*1–40ns
—ns
WR
↑ → data hold time tWHDX
AD7toAD0,WR
1/4tinst*1–40ns
—ns
WR
↑ → ALE ↑ time
tWHLH
WR, ALE
1/4tinst*1–40ns
—ns
WR
↓ → CLK ↑ time
tWLCH
WR, CLK
1/4tinst*1–60ns
—ns
CLK
↓ → WR ↑ time
tCLWH
0—
ns
ALE pulse width
tLHLL
ALE
tXCYL – 35 ns*2
—ns
ALE
↓ → CLK ↑ time
tLLCH
ALE, CLK
tXCYL – 35 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
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
t WHLH
tLLCH
tLHLL
tDVWH
tWHDX
tWLCH
tWLWH
tWHAX
tAVWL
tAVLL
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