RV5C387A_03 datasheet(6/49 Pages) RICOH

Nome de Peças	RV5C387A

Descrição Electrónicos	I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC WITH VOLTAGE MONITORING FUNCTION

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Fabricante Electrônico	RICOH [RICOH electronics devices division]

Página de início	http://www.ricoh.com

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6 / 49 page

RV5C387A

6

Symbol

Item

Conditions

VDD

≥2.0V

VDD

≥2.5V

Unit

MIN.

TYP.

MAX.

MIN.

TYP.

MAX.

fSLC

SCL clock frequency

100

400

kHz

tLOW

SCL clock “L” time

4.7

1.3

µs

tHIGH

SCL clock “H” time

4.0

0.6

µs

tHD ; STA

Start condition hold time

4.0

0.6

µs

tSU ; STO

Stop condition setup time

4.0

0.6

µs

tSU ; STA

Start condition setup time

4.7

0.6

µs

tSU ; DAT

Data setup time

250

200

ns

tHD ; DAT

Data hold time

0

ns

tPL ; DAT

SDA “L” stable time after falling of SCL

2.0

0.9

µs

tPZ ; DAT

SDA off stable time after falling of SCL

2.0

0.9

µs

tR

Rising time of SCL and SDA (input)

1000

300

ns

tF

Falling time of SCL and SDA (input)

300

ns

tSP

Spike width that can be removed

50

ns

with input filter

AC ELECTRICAL CHARACTERISTICS

Unless otherwise specified : VSS=0V, Topt=–40 to +85˚C

I/O conditions: VIH=0.8

×VDD, VIL=0.2×VDD, VOL=0.2×VDD, CL=50pF

SSr

P

SCL

SDA(IN)

SDA(OUT)

tLOW

tHD;STA

tHD;DAT

tPZ;DAT

tPL;DAT

tSU;STA

tSU;STO

tHIGH

tHD;STA

tSP

tSU;DAT

Sr

S Start condition

Stop condition

Repeated start condition

P

*) For read/write timing, see “USAGES, 1.5 Considerations in Reading and Writing Time Data”.

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