R2023K datasheet(45/50 Pages) RICOH

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R2023K/T

Typical Characteristics

Test circuit

Frequency

Counter

VDD

OSCIN

OSCOUT

32KOUT

VSS

32768Hz

CDOUT

CGOUT

Timekeeping Current vs. Supply Voltage

(with no 32kHz clock output)

(with 32kHz clock output)

(Output=Open, Topt=25

°C)

(Output=Open, Topt=25

°C)

0.2

0.4

0.6

0.8

0123

456

Supply Vlotage VDD(v)

0.5

1.5

2.5

0123

456

Supply Voltage VDD(v)

CPU Access Current vs. SCL Clock Frequency

Timekeeping Current vs. Operating Temperature

(CLKC=VSS, Output pins=Open, Topt=25

°C,

(VDD=3v, Output pins=Open, CGout=CDout=0pF)

CGout=CDout=0pF)

100

200

300

400

500

SCL Clock Frequency (kHz)

0.2

0.4

0.6

0.8

1.2

1.4

1.6

1.8

-50

-25

100

Operating Temperature Topt(Celcius)

VDD=5v

VDD=3v

X’tal : 32.768kHz

(R1=50k

Ω typ)

(CL=6pF to 9pF)

Topt : 25

°C

Output pins : Open

(CGout, CDout)=(5pF, 5pF)

(CGout, CDout)=(0pF, 0pF)

(CGout, CDout)=(5pF, 5pF)

with 32kHz clock output

with no 32kHz clock output

(CGout, CDout)=(0pF, 0pF)

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