R2033K-E2 datasheet(4/50 Pages) RICOH

Part #	R2033K-E2

Description	3 wire interface Real-Time Clock ICs

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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R2033K/T

4

ABSOLUTE MAXIMUM RATINGS

(VSS=0V)

Symbol

Item

Pin Name

Description

Unit

VDD

Supply Voltage

VDD

-0.3 to +6.5

V

Input Voltage 1

CE, SCLK, CLKC

-0.3 to +6.5

VI

Input Voltage 2

SIO

-0.3 to VDD + 0.3

V

Output Voltage 1

SIO, 32KOUT

-0.3 to VDD + 0.3

VO

Output Voltage 2

INTR

-0.3 to +6.5

V

PD

Power Dissipation

Topt = 25

°C

300

mW

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

5.5

V

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

V

fXT

Oscillation Frequency

32.768

kHz

INTR

5.5

VPUP

Pull-up Voltage

32KOUT

VDD

+0.3

V

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

R2033K/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.32

•Oscillation Adjustment

Circuit”

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

Ω

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R2033K-E2 Datasheet(PDF) 4 Page - RICOH electronics devices division

R2033K-E2 Datasheet(HTML) 4 Page - RICOH electronics devices division

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