PT7C43390LE datasheet(4/38 Pages) PERICOM

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2015-12-0001

PT0280-8

12/11/15

PT7C43390/43390C

Real-time Clock Module

Maximum Ratings

Storage Temperature....................................................................................-55oC to +125oC

Operating Temperature..................................................................................-40oC to +85oC

Power Supply Voltage........................................................................Vss-0.3V to Vss+6.5V

DC Input Voltage(SCL, SDA).........................................................Vss-0.3V to Vss+6.5V

DC Output Voltage(SDA, INT1, INT2).......................................Vss-0.3V to Vss+6.5V

Power Dissipation

..........................................................250mW (depend onpackage)

Recommended Operating Conditions

Symbol

Parameter

CONDITIONS

Min

Typ

Max

Unit

VDD

Power supply voltage

TA = −40 to +85°C

1.35

3.0

5.5

Topr

Operating temperature

VDD =1.3 to 5.5 V

−40

+25

+85

°C

VDDT

Time keeping voltage range

TA = −40 to +85°C

1.25

5.5

VDDR

TA = −40 to +85°C

0.9

5.5

VDET

Power supply voltage detection voltage

TA = −40 to +85°C

0.70

1.05

1.40

Crystal oscillator CL value

12.5

*1. Power supply voltage detection voltage: Constantly maintains the relation of VDET > VDDRM (minimum data hold voltage).

Oscillation Characteristics

(For PT7C43390: TA = 25°C, VDD = 3.0 V, VSS = 0 V, crystal oscillator (CL = 6pF, 32.768 kHz).)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VSTA

Oscillation start voltage

Within 10 seconds

1.1

5.5

Oscillation start time

δIC

IC to IC frequency deviation

-10

+10

ppm

δV

Frequency voltage deviation

VDD =1.35 to 5.5 V

-3

ppm

(For PT7C43390C: TA = 25°C, VDD = 3.0 V, VSS = 0 V.)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VSTA

Oscillation start voltage

Within 10 seconds

1.1

5.5

Oscillation start time

δIC

IC to IC frequency deviation

-10

+10

ppm

f / f

Frequency tolerance

-30

+30

ppm

δV

Frequency voltage deviation

VDD =1.3 to 5.5 V

-3

ppm

Aging

First year

±5

ppm/year

Stresses greater than those listed under MAXIMUM

RATINGS may cause permanent damage to the

device. This is a stress rating only and functional

operation of the device at these or any other conditions

above those indicated in the operational sections of

this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may

affect reliability.

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