ST2202 datasheet(62/65 Pages) ETC

62 / 65 page

Sitronix

ST2202

Ver 2.0a

62/65

2003-May-05

23.3 AC Electrical Characteristics

FIGURE 23-1 External Read Timing Diagram

FIGURE 23-2 External Write Timing Diagram

TABLE 23-1 Timing parameters for FIGURE 23-1 and FIGURE 23-2

Standard operation conditions: VCC = 3.0V, GND = 0V, TA = 25

°C

Rating

Symbol

Characteristic

Min.

Typ.

Max.

Unit

tSA

Address setup time

—

tHA

Address hold time

—

tWLC

CS “L” pulse width

166

—

tCLWL

CS asserted to R

asserted

—

1/2 tWLC

—

tWHCH

CS negated after R

is negated

—

tCLDH

CS asserted to data outputs high

—

tSDW

CS asserted to data-out is valid

—

1/2 tWLC

—

tHDW

Data-out hold time after R

is negated

—

tCLRL

CS asserted to D

asserted

—

1/2 tWLC

—

tRHCH

CS negated after D

is negated

—

tSDR

Data-in valid before D

is negated

—

tHDR

Data-in hold time after D

is negated

—

Signal rise time

—

Signal fall time

—

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