LM98503 datasheet(20/25 Pages) NSC

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Serial Interface Timing Specifications

The following specifications apply for all supply pins = +3.0V, CL = 10pF, and fCLK = 18MHz unless otherwise noted. Boldface limits

apply for TA = TMIN to TMAX: all other limits TA = 25

oC (Note 7)

Serial Interface Timing

1 Serial output enable must be set in software control 0 for SO DATA output. Please see register data section for more information.

Figure 12: Serial Interface Read Command Timing

1 Serial output enable must be set in software control 0 for SO DATA output. Please see register data section for more information.

Figure 13: Serial Interface Write Command Timing

Symbol

Parameter

Conditions

Min

note 9

Typical

note 8

Max

note 9

Units

tMIN

SCLK Period

SCLK Duty Cycle

50/50

60/40

SCLK Rise / Fall Time

tCESC

SCLK Start Time After CE Low

tDCE

Input Data to CE Rising Edge

tMIN

1A3

A2 A1 A0

1A3 A2 A1 A0

D7 D6 D5 D4 D3 D2 D1 D0

SCLK

/CE

SI DATA

SO DATA1

tCEW

tIH

tSCCE

tIS

tOD

tDCE

0A3

A2 A1 A0

0A3 A2 A1 A0

D7 D6 D5 D4 D3 D2 D1 D0

SCLK

/CE

SI DATA

SO DATA1

tCEW

tIH

tCESC

tIS

tDCE

D7 D6 D5 D4 D3 D2 D1 D0

tMIN

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