R2023K datasheet(6/50 Pages) RICOH

tên linh kiện	R2023K

Giải thích chi tiết về linh kiện	2-wire Serial Interface Real Time Clock IC

PDF	50 Pages

Scroll/Zoom	100%

nhà sản xuất	RICOH [RICOH electronics devices division]

Trang chủ	http://www.ricoh.com

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6 / 50 page

R2023K/T

AC ELECTRICAL CHARACTERISTICS

Unless otherwise specified: VSS=0V,Topt=-40 to +85

°C

Input and Output Conditions: VIH=0.8

×VDD,VIL=0.2×VDD,VOH=0.8×VDD,VOL=0.2×VDD,CL=50pF

VDD

≥1.7V *1)

Sym

-bol

Item

Condi-

Tions

Min.

Typ.

Max.

Unit

fSCL

SCL Clock Frequency

400

kHz

tLOW

SCL Clock Low Time

1.3

µs

tHIGH

SCL Clock High Time

0.6

µs

tHD;STA

Start Condition Hold Time

0.6

µs

tSU;STO

Stop Condition Set Up Time

0.6

µs

tSU;STA

Start Condition Set Up Time

0.6

µs

tSU;DAT

Data Set Up Time

200

tHD;DAT

Data Hold Time

tPL;DAT

SDA “L” Stable Time

After Falling of SCL

0.9

µs

tPZ;DAT

SDA off Stable Time

After Falling of SCL

0.9

µs

Rising Time of SCL and SDA

(input)

300

Falling Time of SCL and SDA

(input)

300

tSP

Spike Width that can be

removed with Input Filter

tRCV

Recovery Time from Stop

Condition to Start Condition

µs

*) For reading/writing timing, see “P.28 Interfacing with the CPU

•Data Transmission under Special Conditions”.

SDA(OUT)

SCL

tPZ;DAT

tHIGH

tSU;DAT

tHD;STA

tSP

tSU;STO

tLOW

tSU;STA

SDA(IN)

tHD;STA

tPL;DAT

Stop Condition

Start Condition

Repeated Start Condition

tHD;DAT

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