MB95F128D datasheet(39/67 Pages) FUJITSU

39 / 67 page

MB95120 Series

AC Characteristics

(1) Clock Timing

(VCC

= 3.3 V, AVSS = VSS = 0.0 V, TA = − 40 °C to + 85 °C)

Parameter

Sym-

bol

Pin name

Condi-

tions

Value

Unit

Remarks

Min

Typ

Max

Clock frequency

FCH

X0, X1

⎯

1.00

⎯

16.25

MHz

When using main

oscillation circuit

1.00

⎯

32.50

MHz

When using external clock

3.00

⎯

10.00

MHz

Main PLL multiplied by 1

3.00

⎯

8.13

MHz

Main PLL multiplied by 2

3.00

⎯

6.50

MHz

Main PLL multiplied by 2.5

3.00

⎯

4.06

MHz

Main PLL multiplied by 4

FCL

X0A, X1A

⎯

32.768

⎯

kHz

When using sub

oscillation circuit

⎯

32.768

⎯

kHz

When using sub PLL

VCC

= 2.3 V to 3.3 V

Clock cycle time

tHCYL

X0, X1

61.5

⎯

1000

When using main

oscillation circuit

30.8

⎯

1000

When using external clock

tLCYL

X0A, X1A

⎯

30.5

⎯

µs

When using sub

oscillation circuit

Input clock pulse width

tWH1

tWL1

61.5

⎯⎯

When using external clock

Duty ratio is about 30

% to

tWH2

tWL2

X0A

⎯

15.2

⎯

µs

Input clock rise time and

fall time

tCR

tCF

X0, X0A

⎯⎯

When using external clock

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