R2051K01-E2 datasheet(6/58 Pages) RICOH

Part #	R2051K01-E2

Description	2 wire interface Real-Time Clock ICs with Battery Backup switch-over Function

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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R2051 Series

6

DC ELECTRICAL CHARACTERISTICS

• R2051K01, R2051S01, R2051T01

(Unless otherwise specified: VSS=0V,VCC=VSB=3.0V, 0.1uF between VDD and VSS, CIN and VSS,

Topt=-40 to +85

°C)

Symbol

Item

Pin Name

Conditions

Min.

Typ.

Max.

Unit

VIH

“H” Input Voltage

0.8x

VCC

5.5

VIL

“L” Input Voltage

SCL,SDA

-0.3

0.2x

VCC

V

IOH

“H” Output

Current

CLKOUT

VOH=VCC-0.5V

-0.5

mA

IOL1

CLKOUT

0.5

IOL2 *2)

INTR

2.0

IOL4

SDA

VOL=0.4V

3.0

IOL3 *2)

“L” Output

Current

VDCC

VDD,VSB,VCC=2.0V

VOL=0.4V

0.5

mA

IIL

Input Leakage

Current

SCL

VI=5.5V or VSS

-1.0

1.0

µA

IOZ1

Output Off-state

Current 1

SDA

VO=5.5V or VSS

-1.0

1.0

µA

IOZ2 *2)

Output Off-state

Current 2

INTR ,

VDCC

VO=5.5V or VSS

-1.0

1.0

µA

ISB

Time Keeping Current

at Backup mode

VSB

VCC=0V, VSB=3.0V,

VDD, Output=OPEN

Time keeping

0.4

1.0

µA

ISBL

Leakage Current of

Backup pin at

VCC_on

VSB

VCC=3.0V,

VSB=5.5V or 0V,

VDD, Output=OPEN

-1.00

1.00

µA

VDETH

Supply Voltage

Monitoring Voltage

“H”

VDD

Topt=+25

°C

1.90

2.10

2.30

V

VDETL

Supply Voltage

Monitoring Voltage “L”

VDD

Topt=+25

°C

1.20

1.35

1.50

V

-VDET1

Detector Threshold

Voltage

(falling edge of VCC)

VCC

Topt=+25

°C

2.34

2.40

2.46

V

+VDET1

Detector Released

Voltage (rising edge

of VCC)

VCC

Topt=+25

°C

2.44

2.52

2.60

V

∆VDET

∆Topt

Detector Threshold

and Released Voltage

Temperature

coefficient

VCC,

VSB

Topt=-40 to +85

°C

*1)

±100

ppm

/

°C

VDDOUT1

VDD Output

Voltage 1

VDD

Topt=+25

°C, VCC=3.0V,

Iout=1.0mA

VCC

-0.12

VCC

-0.04

V

VDDOUT2

VDD Output

Voltage 2

VDD

Topt=+25

°C, VCC=2.0V,

VSB=3.0V, Iout=0.1mA

VSB

-0.08

VSB

-0.02

V

CG

Internal Oscillation

Capacitance 1

OSCIN

10

CD

Internal Oscillation

Capacitance 2

OSCOUT

10

pF

*1) Guaranteed by design.

*2) Except R2051T01

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R2051K01-E2 Datasheet(PDF) 6 Page - RICOH electronics devices division

R2051K01-E2 Datasheet(HTML) 6 Page - RICOH electronics devices division

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