MB91155 datasheet(88/105 Pages) FUJITSU

88 / 105 page

MB91F155A/MB91155/MB91154

(2) Clock Output Timing

(VCC

= 3.15 V to 3.6 V, VSS = AVSS = 0 V, TA = 0 °C to +70 °C)

*1 : tCYC is a frequency for 1clock cycle including a gear cycle.

Use the doublur when CPU frequency is above 25 MHz.

*2 : Rating at a gear cycle of

× 1

When a gear cycle of 1/2, 1/4, 1/8 is selected, substitute “n” in the following equations wiht 1/2, 1/4, 1/8,

respectively.

• Min : (1−n/2) × tCYC−10

• Max : (1−n/2) × tCYC+10

Select a gear sysle of

× 1 when using the doublur.

*3 : Rating at a gear cycle of

× 1

When a gear cycle of 1/2, 1/4, 1/8 selected, substitute “n” in the following equations wiht 1/2, 1/4, 1/8,

respectively.

• Min : n/2 × tCYC−10

• Max : n/2 × tCYC+10

Select a gear sysle of

× 1 when using the doublur.

Parameter

Symbol

name

Condition

Value

Unit

Remarks

Min

Max

Cycle time

tCYC

CLK



tCP

tCPB

On using doubla

CLK

↑→CLK↓

tCHCL

CLK

tCYC/2

−10

tCYC/2

+10

CLK

↓→CLK↑

tCLCH

CLK

tCYC/2

−10

tCYC/2

+10

VOL

VOH

CLK

tCYC

tCHCL

tCLCH

MB91155 Datasheet(PDF) 88 Page - fujitsu semiconductor

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