MB89P677APFM View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB89P677APFM Datasheet PDF : 59 Pages
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MB89670/A Series
(7) Bus Read Timing
Parameter
Symbol
Valid address → RD
↓ time
tAVRL
RD pulse width
tRLRH
Valid address → Data
read time
tAVDV
RD ↓ → Data read time tRLDV
RD ↑ → Data hold time tRHDX
RD ↑ → ALE ↑ time
tRHLH
RD ↑ → Address loss time tRHAX
RD ↓ → CLK ↑ time
tRLCH
CLK ↓ → RD ↑ time
tCLRH
RD ↓ → BUFC ↓ time tRLBL
BUFC ↑ → Valid
address time
tBHAV
(AVCC = VCC = +5.0 V±10%, AVSS = VSS = 0.0 V, TA = –40°C to +85°C)
Value
Pin
Condition
Unit Remarks
Min.
Max.
RD, A15 to 08,
AD7 to 0
1/4 tinst* – 0.06
—
µs
RD
1/2 tinst *– 0.02
—
µs
AD7 to 0,
A15 to 08
—
1/2 tinst *
µs Wait
RD, AD7 to 0
—
1/2 tinst *– 0.08 µs No wait
AD7 to 0, RD
0
—
ns
RD, ALE
—
1/4 tinst* – 0.04
—
µs
RD, A15 to 08
1/4 tinst* – 0.04
—
µs
RD, CLK
1/4 tinst* – 0.04
—
µs
RD, CLK
0
—
ns
RD, BUFC
–5
—
ns
A15 to 08,
AD7 to 0,
BUFC
5
—
ns
* : For information on tinst, see “(4) Instruction Cycle.”
CLK
ALE
2.4 V
0.8 V
tRHLH
0.8 V
AD
A
RD
BUFC
2.4 V
0.8 V
2.4 V
0.8 V
tAVRL
tAVDV
tRLCH
tRLDV
tRLRH
0.8 V
tRLBL
0.7 VCC
0.3 VCC
0.7 VCC
0.3 VCC
tRHDX
2.4 V
tCLRH
0.8 V
tRHAX
2.4 V
0.8 V
2.4 V
0.8 V
2.4 V
0.8 V
tBHAV
2.4 V
37
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