參數(shù)資料
型號(hào): 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): 31/59頁
文件大小: 774K
代理商: MB89643PF
37
MB89640 Series
(7) Bus Read Timing
(VCC = +5.0 V±10%, FCH = 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
Unit
Remarks
Min.
Max.
Valid address
→ RD ↓ time
tAVRL
RD, A15 to
08, AD7 to 0
1/4 tinst* – 64 ns
—ns
RD pulse width
tRLRH
RD
1/2 tinst* – 20 ns
—ns
Valid address
→ read data
time
tAVDV
AD7 to 0,
A15 to 08
1/2 tinst*
200
ns
No wait
RD
↓ → read data time
tRLDV
RD, AD7 to 0
1/2 tinst* – 80 ns
120
ns
No wait
RD
↑ → data hold time
tRHDX
AD7 to 0, RD
0—
ns
RD
↑ → ALE ↑ time
tRHLH
RD, ALE
1/4 tinst* – 40 ns
—ns
RD
↑ → address invalid time
tRHAX
RD, A15 to 08
1/4 tinst* – 40 ns
—ns
RD
↓ → CLK ↑ time
tRLCH
RD, CLK
1/4 tinst* – 40 ns
—ns
CLK
↓ → RD ↑ time
tCLRH
RD, CLK
0
ns
RD
↓ → BUFC ↓ time
tRLBL
RD, BUFC
–5
ns
BUFC
↑→ Valid address time tBHAV
A15 to 08,
AD7 to 0, 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
tAVDV
tRLBL
tCLRH
tRHLH
tAVRL
tRLCH
tRLDV
tRLRH
tRHAX
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