RS5C372A Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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RS5C372A

I2C bus SERIAL INTERFACE REAL-TIME CLOCK ICs

RICOH Co.,Ltd. 

RS5C372B

RECOMMENDED OPERATING CONDITIONS

Symbol

VDD

VCLK

Item

Supply Voltage

Timekeeping Voltage

Conditions

FXT

Oscillation Frequency

VPUP1

VPUP2

Pull-up Voltage 1

Pull-up Voltage 2

SCL, SDA

INTR

MIN.

2.0

1.45

(Vss=0V, Topt=–40 to +85˚C)

TYP. MAX. Unit

6.0

V

6.0

V

32.768

or

kHz

32.000

6.0

V

10.0

V

DC CHARACTERISTICS

Unless otherwise specified: Vss=0V, VDD=3V, Topt=–40 to +85˚C, Oscillation frequency=32.768kHz, or 32.000kHz(R1=30kΩ)

Symbol

Item

Pin name

Conditions

MIN. TYP. MAX. Unit

VIH

“H” Input Voltage

SCL, SDA

0.8VDD

6.0

V

VIL

“L” Input Voltage

SCL, SDA

–0.3

0.2VDD V

IOH

“H” Output Current 32KOUT

VOH=VDD–0.5V

–0.5 mA

IOL1

INTR, 32KOUT

VOL1=0.4V

1

mA

“L” Output Current

IOL2

SDA

VOL2=0.6V

6

mA

IILK

Input Leakage Current SCL

VI=6V or Vss

–1

VDD=6V

1

µA

Output Off State

SDA, INTR

VO=6V or Vss

IOZ

–1

Leakage Current

32KOUT

VDD=6V

1

µA

VDD=3V, Topt=25˚C

IDD1

VDD

SCL, SDA=3V

0.5

0.9

µA

Output=OPEN *1

IDD2 Standby Current

VDD

VDD=3V,

Topt=–40 to +85˚C

SCL, SDA=3V

Output=OPEN *1

1.0

µA

VDD=6V

IDD3

VDD

SCL, SDA=6V

0.8

2.0

µA

Output=Open *1

CG Internal Oscillation Capacitance 1 OSCIN

10

pF

CD Internal Oscillation Capacitance 2 OSCOUT

10

pF

*1) The mode outputs no clock pulses when output is open (output off state).

For consumption current (output: no load) when 32kHz pulses are output from 32KOUT, see “USAGES, 6. Typical Characteristic Measurements”

10

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