ICM7170AIPG datasheet(4/14 Pages) INTERSIL

4 / 14 page

AC Electrical Specifications

TA = -40

oC to 85oC, V

DD = +5V ± 10%, VBACKUP = VDD,

D0 - D7 Load Capacitance = 150pF, VIL = 0.4V, VlH = 2.8V, Unless Otherwise Specified

PARAMETER

MIN

MAX

UNITS

READ CYCLE TIMING

READ to DATA Valid, tRD

250

ADDRESS Valid to DATA Valid, tACC

300

READ Cycle Time, tCYC

400

Read High Time, tRH

150

RD High to Bus Three-State, tRH

ADDRESS to READ Set Up Time, tAS

ADDRESS HOLD Time After READ, tAR

WRITE CYCLE TIMING

ADDRESS Valid to WRITE Strobe, tAD

ADDRESS Hold Time for WRITE, tWA

WRITE Pulse Width, Low, tWL

100

WRITE High Time, tWH

300

DATA IN to WRITE Set Up Time, tDW

100

DATA IN Hold Time After WRITE, tWD

WRITE Cycle Time, tCYC

400

MULTIPLEXED MODE TIMING

ALE Pulse Width, High, tLL

ADDRESS to ALE Set Up Time, tAL

ADDRESS Hold Time After ALE, tLA

Timing Diagrams

FIGURE 1. READ CYCLE TIMING FOR NON-MULTIPLEXED BUS (ALE = VIH, WR = VIH)

A0 - A4, CS

D0 - D7

ADDRESS VALID, CS LOW

tAR

OUTPUT DATA VALID

tACC

tRD

tAS

tRX

tCYC

ICM7170

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