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R2043T-E2-F Datasheet(PDF) 6 Page - RICOH electronics devices division

Part # R2043T-E2-F
Description  4-wire Serial Interface Real Time Clock IC
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Manufacturer  RICOH [RICOH electronics devices division]
Direct Link  http://www.ricoh.com
Logo RICOH - RICOH electronics devices division

R2043T-E2-F Datasheet(HTML) 6 Page - RICOH electronics devices division

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R2043x
NO.EA-224-160701
6
*
R2043K (FFP12) is the discontinued product as of July, 2016.
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
Symbol
Item
Condi-
tions
VDD≥1.7V
Unit
Min.
Typ.
Max.
tCES
CE Set-up Time
400
ns
tCEH
CE Hold Time
400
ns
tCR
CE Recovery Time
62
µ
s
fSCLK
SCLK Clock Frequency
1.0
MHz
tCKH
SCLK Clock High Time
400
ns
tCKL
SCLK Clock Low 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
*) For reading/writing timing, see “P.29 Adjustment of Oscillation frequency”.
SCLK
tCES
SI
CE
tRD
tCKL
tCEZ
tDS
tDH
tRD
tCEH
tCKH
tCKS
tCR
tRZ
SO


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