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R2023K Datasheet(PDF) 5 Page - RICOH electronics devices division

Part No. R2023K
Description  2-wire Serial Interface Real Time Clock IC
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Maker  RICOH [RICOH electronics devices division]
Homepage  http://www.ricoh.com
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R2023K Datasheet(HTML) 5 Page - RICOH electronics devices division

 
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R2023K/T
5
DC ELECTRICAL CHARACTERISTICS
(Unless otherwise specified:
VSS=0V, VDD=3.0V, Topt=-40 to +85
°C, Crystal oscillator 32768Hz,CL=7pF,R1=50kΩ)
Symbol
Item
Pin Name
Conditions
Min.
Typ.
Max.
Unit
VIH
“H” Input Voltage
0.8x
VDD
5.5
VIL
“L” Input Voltage
SCL, SDA,
CLKC
VDD=1.7 to 5.5V
-0.3
0.2x
VDD
V
IOH
“H” Output
Current
32KOUT
VOH=VDD-0.5V
-0.5
mA
IOL1
32KOUT
0.5
IOL2
INTRA
INTRB
2.0
mA
IOL3
“L” Output
Current
SDA
VOL=0.4V
3.0
IIL
Input Leakage
Current
SCL
VI=5.5V or VSS
VDD=5.5V
-1.0
1.0
µA
ICLKC
Pull-down Resister
Input Leakage Current
CLKC
VI=5.5V
0.30
1.00
µA
IOZ
Output Off-state
Current
SDA,
INTRA ,
INTRB
VO=5.5V or VSS
VDD=5.5V
-1
1
µA
IDD
Time Keeping Current
VDD
VDD=3V,
SCL=SDA=CLKC=0V
32KOUT=OFF
OUTPUT=OPEN
CGout=CDout=0pF
*1)
0.45
1.00
µA
VDETH
Supply Voltage
Monitoring Voltage
“H”
VDD
Topt=-30 to +70
°C
1.45
1.60
1.75
V
VDETL
Supply Voltage
Monitoring Voltage “L”
VDD
Topt=-30 to +70
°C
1.15
1.30
1.45
V
*1) For time keeping current when outputting 32.768kHz from the 32KOUT pin, see “P.45 TYPICAL
CHARACTERISTICS”.
For time keeping current when CGOUT, CDOUT is not equal to 0pF, see “P.30
•Adjustment of oscillation frequency”.


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