MB90495 Series
14.7 External Bus Ready Input Timing
Parameter
Symbol
Pin
Test Condition
RDY setup time
RDY hold time
tRYHS
RDY
—
tRYHH
RDY
Note: If the RDY setup time is insufficient, use the auto-ready function.
(TA = –40 to +85°C, VCC = 4.5 to 5.5 V, VSS = 0 V)
Rated Value
Min.
Max.
Units
Remarks
45
—
ns
0
—
ns
CLK
ALE
RD/WR
RDY
no WAIT is used.
RDY
When WAIT is used
2.4 V
tRYHS
0.8 VCC
tRYHH
0.8 VCC
0.2 VCC
Figure 14.8 Ready Input Timing
MB90495 Series Data Sheet (Advance Information) 31 / 40
FME EMDC June 19, 2000