BU9873FVM-GTTR datasheet(5/40 Pages) ROHM

Part #	BU9873FVM-GTTR

Description	I2C BUS Serial Interface RTC with High-precision Oscillation Adjustment

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Manufacturer	ROHM [Rohm]

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Datasheet

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BU9873

TSZ02201-0919AGZ00010-1-2

13.Sep.2013 REV.001

www.rohm.com

TSZ22111・15・001

DC Characteristics

Item

Symbol

Pin Name

Spec

Unit

Conditions

Min

Typ

Max

“H” Input Voltage

VIH

SCL, SDA

0.7VDD

－

VDD+0.3

V

“L” Input Voltage

VIL

SCL, SDA

-0.3

－

0.3VDD

V

“H” Output Current

IOH

32KOUT

－

-0.5

mA

VOH=VDD-0.5V

“L” Output Current

IOL1

INTRB, 32KOUT

1

－

mA

VOL1=0.4V

IOL2

SDA

6

－

mA

VOL2=0.4V

Input Leakage Current

IILK

SCL

-1

－

1

μAVIN=5.5V or VSS, VDD=5.5V

Output Off State Leakage

Current

IOZ

SDA, INTRB,

32KOUT

-1

－

1

μA

VOUT=5.5V or VSS,

VDD=5.5V

Standby Current

(time keeping current)

IDD1

VDD

－

0.4

0.6

μA

VDD=3V,

Topt=25°C,

SCL, SDA=3V,

CGOUT=CDOUT=0pF,

Output=Open

(Note1)

IDD2

VDD

－

1.0

μA

VDD=3V,

Topt=-40°C to +85°C,

SCL, SDA=3V,

CGOUT=CDOUT=0pF,

Output=Open

(Note1)

IDD3

VDD

－

1.35

μA

VDD=5.5V,

Topt=-40°C to +85°C,

SCL, SDA=5.5V,

CGOUT=CDOUT=0pF,

Output=Open

(Note1)

Internal Oscillation

Capacitance 1

CG

OSCIN

－

10

－

pF

Internal Oscillation

Capacitance 2

CD

OSCOUT

－

10

－

pF

Unless otherwise specified: Vss=0V, VDD=3V, Topt=−40°C to +85°C, Oscillation frequency=32.768 kHz

(load capacitance CL=6pF, equivalent series resistance R1=20kΩ)

(Note 1) In this mode, 32KOUT is disabled and no clock is output from this pin.

For time keeping current when outputting 32-kHz pulse from 32KOUT pin (this pin without loading), please refer to “P.7 Typical Performance Curves”.

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BU9873FVM-GTTR Datasheet(PDF) 5 Page - Rohm

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