RS5C372A-E2-F datasheet(14/57 Pages) RICOH | I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC

Part #	RS5C372A-E2-F

Description	I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC

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Manufacturer	RICOH [RICOH electronics devices division]

Direct Link	http://www.ricoh.com

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RS5C372B

13

 V

DD

2.5V (supports fast mode I

2C bus)

Unless otherwise specified : VSS

0V, Topt40 to 85, Crystal32.768kHz or 32.000kHz,

Input and Output Conditions:VIH

0.8VDD,VIL=0.2VDD,VOL=0.2VDD,CL=50pF

Symbol

Item

Conditions

Min.

Typ.

Max.

Unit

fSCL

SCL Clock Frequency

0

400

kHz

tLOW

SCL Clock “L” Time

1.3

s

tHIGH

SCL Clock “H” Time

0.6

s

tHD ; STA

Start Condition Hold Time

0.6

s

tSU ; STO

Stop Condition Setup Time

0.6

s

tSU ; STA

Start Condition Setup Time

0.6

s

tSU ; DAT

Data Setup Time

100

ns

tHDH ; DAT

“H”Data Hold Time

0

ns

tHDL ; DAT

“L”Data Hold Time

35

ns

tPL ; DAT

SDA “L” Stable Time After Falling of SCL

0.9

s

tPZ ; DAT

SDA Off Stable Time After Falling of SCL

0.9

s

tR

Rising Time of SCL and SDA (Input)

300

ns

tF

Falling Time of SCL and SDA (Input)

300

ns

tSP

Spike Width that can be Removed with

Input Filter

50

ns

SSr

P

SCL

SDA(IN)

SDA(OUT)

tLOW

tHD;STA

tHDH;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

tHDL;DAT

) For detailed information refer to “USAGES, 1.2 Transmission System of I2C bus.”

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RS5C372A-E2-F Datasheet(PDF) 14 Page - RICOH electronics devices division

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