參數(shù)資料
型號(hào): 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(yè)數(shù): 24/51頁(yè)
文件大?。?/td> 798K
代理商: MB89W857C-SH
30
MB89860/850 Series
(7) Bus Read Timing
(VCC = +5.0 V
±10%, FC = 10 MHz, AVSS = VSS = 0.0 V, TA = –40°C to +85°C)
* : For information on tinst, see “(4) Instruction Cycle.”
Parameter
Symbol
Pin
Condition
Value (10 MHz)
Unit
Remarks
Min.
Max.
Valid address
→ RD ↓
time
tAVRL
RD,A15toA08,
AD7 to AD0
Load
condition:
50 pF
1/4tinst*–64ns
ns
RD pulse width
tRLRH
RD
1/2tinst*–20ns
ns
Valid address
→ data
read time
tAVDV
AD7toAD0,A15
to A08
1/2 tinst*
ns
No wait
RD
↓ → data read time tRLDV
RD,AD7toAD0
1/2tinst*–80ns
ns
No wait
RD
↑ → data hold time tRHDX
AD7toAD0,RD
0—
ns
RD
↑ → ALE ↑ time
tRHLH
RD, ALE
1/4tinst*–40ns
ns
RD
↑→addressinvalidtime tRHAX
RD, A15 to A08
1/4tinst*–40ns
ns
RD
↓ → CLK ↑ time
tRLCH
RD, CLK
1/4tinst*–60ns
ns
CLK
↓ → RD ↑ time
tCLRH
0—
ns
RD
↓ → BUFC ↓ time
tRLBL
RD, BUFC
–5
ns
BUFC
↑ → valid
address time
tBHAV
A15 to A08,
AD7 to AD0,
BUFC
5—
ns
ALE
AD
A
RD
BUFC
CLK
2.4 V
0.8 V
2.4 V
0.8 V
0.7 VCC
0.3 VCC
0.7 VCC
0.3 VCC
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
tRHDX
tBHAV
tRLBL
tCLRH
tRHLH
tAVDV
tRLCH
tRLDV
tRHAX
tRLRH
tAVRL
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