1337CSRI datasheet(13/24 Pages) IDT

13 / 24 page

IDT1337

REA LTIME CLOCK WITH SERIAL INTERFACE

RTC

IDT™ REAL-TIME CLOCK WITH I2C SERIAL INTERFACE

IDT1337

REV J 111009

DC Electrical Characteristics

Unless stated otherwise, VCC = 1.8 V to 5.5 V, Ambient Temperature -40 to +85

° C, Note 1

DC Electrical Characteristics

Unless stated otherwise, VCC = 1.3 V to 1.8 V, Ambient Temperature -40 to +85

° C, Note 1

AC Electrical Characteristics

Unless stated otherwise, VCC = 1.8 V to 5.5 V, Ambient Temperature -40 to +85

° C, Note 1

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Input Leakage

ILI

Note 2

-1

µA

I/O Leakage

ILO

Note 3

-1

µA

Logic 0 Output

VOL = 0.4 V

IOL

Note 3

Active Supply Current

ICCA

Note 4

150

µA

Standby Current

ICCS

Notes 5, 6

1.5

µA

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

Timekeeper Current (Oscillator

Enabled)

ICCTOSC Notes 5, 7, 8, 9

425

600

Data-Retention Current (Oscillator

Disabled)

ICCTDDR Notes 5, 9

100

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Units

SCL Clock Frequency

fSCL

Fast Mode

100

400

kHz

Standard Mode

100

Bus Free Time Between a STOP and

START Condition

tBUF

Fast Mode

1.3

µs

Standard Mode

4.7

Hold Time (Repeated) START

Condition, Note 10

tHD:STA

Fast Mode

0.6

µs

Standard Mode

4.0

Low Period of SCL Clock

tLOW

Fast Mode

1.3

µs

Standard Mode

4.7

High Period of SCL Clock

tHIGH

Fast Mode

0.6

µs

Standard Mode

4.0

Setup Time for a Repeated START

Condition

tSU:STA

Fast Mode

0.6

µs

Standard Mode

4.7

Data Hold Time, Notes 11, 12

tHD:DAT

Fast Mode

0.9

µs

Standard Mode

Data Setup Time, Note 13

tSU:DAT

Fast Mode

100

Standard Mode

250

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