R2023K datasheet(5/50 Pages) RICOH

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R2023K/T

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

IOH

“H” Output

Current

32KOUT

VOH=VDD-0.5V

-0.5

IOL1

32KOUT

0.5

IOL2

INTRA

INTRB

2.0

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

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

VDETL

Supply Voltage

Monitoring Voltage “L”

VDD

Topt=-30 to +70

°C

1.15

1.30

1.45

*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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