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DS3231

Extremely Accurate I2C-Integrated RTC/TCXO/Crystal

Dallas Semiconductor -> Maxim Integrated 

Extremely Accurate I2C-Integrated

RTC/TCXO/Crystal

ABSOLUTE MAXIMUM RATINGS

Voltage Range on VCC, VBAT, 32kHz, SCL, SDA, RST,

INT/SQW Relative to Ground.............................-0.3V to +6.0V

Operating Temperature Range

(noncondensing) .............................................-40°C to +85°C

Junction Temperature ......................................................+125°C

Storage Temperature Range ...............................-40°C to +85°C

Lead Temperature

(Soldering, 10s).....................................................+260°C/10s

Soldering Temperature....................................See the Handling,

PC Board Layout, and Assembly section.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

RECOMMENDED DC OPERATING CONDITIONS

(TA = TMIN to TMAX, unless otherwise noted.) (Notes 1, 2)

PARAMETER

Supply Voltage

SYMBOL

VCC

VBAT

CONDITIONS

Logic 1 Input SDA, SCL

VIH

Logic 0 Input SDA, SCL

Pullup Voltage

(SDA, SCL, 32kHz, INT/SQW)

VIL

VPU

VCC = 0V

MIN

2.3

2.3

0.7 x

VCC

-0.3

TYP

3.3

3.0

MAX

5.5

5.5

VCC +

0.3

+0.3 x

VCC

UNITS

V

V

V

V

5.5V

V

ELECTRICAL CHARACTERISTICS

(VCC = 2.3V to 5.5V, VCC > VBAT, TA = TMIN to TMAX, unless otherwise noted.) (Typical values are at VCC = 3.3V, VBAT = 3.0V, and

TA = +25°C, unless otherwise noted.) (Notes 1, 2)

PARAMETER

Active Supply Current

Standby Supply Current

Temperature Conversion Current

Power-Fail Voltage

Logic 0 Output, 32kHz, INT/SQW,

SDA

Logic 0 Output, RST

Output Leakage Current 32kHz,

INT/SQW, SDA

Input Leakage SCL

RST Pin I/O Leakage

VBAT Leakage Current

(VCC Active)

SYMBOL

ICCA

ICCS

CONDITIONS

(Notes 3, 4)

VCC = 3.63V

VCC = 5.5V

I2C bus inactive, 32kHz

output on, SQW output off

(Note 4)

VCC = 3.63V

VCC = 5.5V

ICCSCONV

I2C bus inactive, 32kHz

output on, SQW output off

VPF

VCC = 3.63V

VCC = 5.5V

VOL

IOL = 3mA

VOL

IOL = 1mA

ILO

Output high impedance

ILI

IOL

RST high impedance (Note 5)

IBATLKG

MIN

2.45

-1

-1

-200

TYP

2.575

0

25

MAX

200

300

110

170

575

650

2.70

0.4

0.4

+1

+1

+10

100

UNITS

µA

µA

µA

V

V

V

µA

µA

µA

nA

2 _____________________________________________________________________

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