MB90560/565 Series
4. AC Characteristics
(1) Clock Timings
(TA = −40 °C to +85 °C, VCC = 5.0 V ±10%, VSS = AVSS = 0.0 V)
Value
Sym
bol
Condi-
tion
Parameter
Clock frequency
Clock cycle time
Pin Name
X0, X1
Unit
MHz
ns
Remarks
Min.
3
Typ.
Max.
16
With a PLL circuit
Without a PLL circuit
With a PLL circuit
Without a PLL circuit
fC
1
16
62.5
62.5
333
1000
tHCYL
X0, X1
PWH
PWL
Recommended duty
ratio = 30% to 70%
Input clock pulse width
Input clock rise/fall time
X0
X0
10
ns
ns
tcr
tcf
When using an
external clock
5
Internal operating clock
frequency
When using a main
clock
fCP
1.5
16
MHz
ns
Internal operating clock
cycle time
When using a main
clock
tCP
62.5
333
• X0 and X1 clock timing
tHCYL
0.8 VCC
0.2 VCC
X0
PWH
PWL
tcr
tcf
61
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