R2033T-E2 datasheet(6/50 Pages) RICOH

Part #	R2033T-E2

Description	3 wire interface Real-Time Clock ICs

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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6 / 50 page

R2033K/T

6

AC ELECTRICAL CHARACTERISTICS

Unless otherwise specified: VSS=0V,Topt=-40 to +85

°C

Input and Output Conditions: VIH=0.8

×VDD,VIL=0.2×VDD,VOH=0.8×VDD,VOL=0.2×VDD,CL=50pF

VDD

≥1.7V

Sym

-bol

Item

Condi-

Tions

Min.

Typ.

Max.

Unit

tCES

CE Set-up Time

400

ns

tCEH

CE Hold Time

400

ns

tCR

CE Recovery Time

62

µs

fSCLK

SCLK Clock Frequency

1.0

MHz

tCKH

SCLK Clock ”H” Time

400

ns

tCKL

SCLK Clock ”L” Time

400

ns

tCKS

SCLK Set-up Time

200

ns

tRD

Data Output Delay Time

300

ns

tRZ

Data Output Floating Time

300

ns

tCEZ

Data Output Delay Time After

Falling of CE

300

ns

tDS

Input Data Set-up Time

200

ns

tDH

Input Data Hold Time

200

ns

tDELAY

Output Delay Time of Voltage

Detector

Time

Keeping

100

105

110

ms

SCLK

tCES

SIO(read cycle)

SIO(write cycle)

CE

tRD

tCKL

tCEZ

tDS

tDH

tRD

tCEH

tCKH

tCKS

tCR

tRZ

*)

For reading/writing timing, see “P.26

•Considerations in Reading and Writing Time Data under special

condition”.

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R2033T-E2 Datasheet(PDF) 6 Page - RICOH electronics devices division

R2033T-E2 Datasheet(HTML) 6 Page - RICOH electronics devices division

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