ICM7170 Datasheet, PDF(6/14 Page) Intersil Corporation – Microprocessor-Compatible, Real-Time Clock

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ICM7170 Datasheet, PDF (6/14 Pages) Intersil Corporation – Microprocessor-Compatible, Real-Time Clock

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Timing Diagrams (Continued)

ICM7170

A0 - A4, CS

D0 - D7

ADDRESS VALID, CS LOW

tAD

tWA

tCYC

tWL

tDW

tWD

INPUT DATA VALID

FIGURE 2. WRITE CYCLE TIMING FOR NON-MULTIPLEXED BUS (ALE = VIH, RD = VIH)

A0 - A4, D0 - D7, CS

ALE

ADDRESS VALID, CS LOW

tLA

tLL

tACC

OUTPUT DATA VALID

tAR

tAL

tCYC

tAS

tRD

FIGURE 3. READ CYCLE TIMING FOR MULTIPLEXED BUS (WR = VIH)

A0 - A4, D0 - D7, CS

ALE

ADDRESS VALID, CS LOW

tLL

tAL

tAD

INPUT DATA VALID

tLA

tDW

tWD

tWA

tCYC

tWL

FIGURE 4. WRITE CYCLE TIMING FOR MULTIPLEXED BUS (RD = VIH)

Specification Number5ICM7170_IM (IL) REV -

Page 6 of 14

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