R2023K datasheet(4/50 Pages) RICOH

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R2023K/T

ABSOLUTE MAXIMUM RATINGS

(VSS=0V)

Symbol

Item

Pin Name

Description

Unit

VDD

Supply Voltage

VDD

-0.3 to +6.5

Input Voltage 1

SCL, SDA, CLKC

-0.3 to +6.5

Output Voltage 1

SDA, INTRA , INTRB

-0.3 to +6.5

Output Voltage 2

32KOUT

-0.3 to VDD + 0.3

Power Dissipation

Topt = 25

°C

300

Topt

Operating Temperature

-40 to +85

°C

Tstg

Storage Temperature

-55 to +125

°C

RECOMMENDED OPERATING CONDITIONS

(VSS=0V, Topt=-40 to +85

°C)

Symbol

Item

Pin Name

Min,

Typ.

Max.

Unit

Vaccess

Supply Voltage

Power supply voltage

for interfacing

with CPU

1.7

*1)

5.5

VCLK

Time keeping Voltage

CGout,CDout=0pF

*1), *2)

1.00

5.50

VCLKL

Minimum Time keeping

Voltage

CGout,CDout=0pF

*1), *2)

0.66

1.00

fXT

Oscillation Frequency

32.768

kHz

VPUP

Pull-up Voltage

INTRA , INTRB ,

SCL, SDA

5.5

*1) CGout is connected between OSCIN and VSS, CDout is connected between OSCOUT and VSS.

R2023K/T incorporates the capacitors between OSCIN and VSS, between OSCOUT and VSS.

Then normally, CGout and CDout are not necessary.

For more detail, see “P.30

•Adjustment of oscillation

frequency”

*2) Crystal oscillator: CL=6-9pF, R1=50K

Ω

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