DS3232 datasheet(2/19 Pages) MAXIM

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Extremely Accurate I2C RTC with

Integrated Crystal and SRAM

_____________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

RECOMMENDED OPERATING CONDITIONS

(TA = -40°C to +85°C, unless otherwise noted.) (Notes 2, 3)

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.

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

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

Junction-to-Ambient Thermal Resistance (

θJC) (Note 1)..55.1°C/W

Junction-to-Case Thermal Resistance (

θJC) (Note 1)..........24°C/W

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

Soldering Temperature (reflow, 2 times max) ....................+260°C

(See the

Handling, PC Board Layout, and Assembly section.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VCC

2.3

3.3

5.5

Supply Voltage

VBAT

2.3

3.0

5.5

Logic 1 Input SDA, SCL

VIH

0.7 x

VCC

VCC +

0.3

Logic 0 Input SDA, SCL

VIL

-0.3

+0.3 x

VCC

ELECTRICAL CHARACTERISTICS

(VCC = 2.3V to 5.5V, VCC = active supply (see Table 1), TA = -40°C to +85°C, unless otherwise noted.) (Typical values are at VCC =

3.3V, VBAT = 3.0V, and TA = +25°C, unless otherwise noted.) (Notes 2, 3)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VCC = 3.3V

200

Active Supply Current

ICCA

32kHz output off

(Notes 4, 5)

VCC = 5.5V

325

µA

VCC = 3.3V

120

Standby Supply Current

ICCS

I2C bus inactive, 32kHz

output off, SQW output off

(Note 5)

VCC = 5.5V

160

µA

VCC = 3.3V

500

Temperature Conversion Current

ICCSCONV

I2C bus inactive, 32kHz

output off, SQW output off

VCC = 5.5V

600

µA

Power-Fail Voltage

VPF

2.45

2.575

2.70

ACTIVE SUPPLY (Table 1 ) (2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted) (Note 2)

Logic 1 Output, 32kHz

IOH = -1mA

IOH = -0.75mA

IOH = -0.14mA

VOH

Active supply > 3.3V,

3.3V > active supply > 2.7V,

2.7V > active supply > 2.3V

2.0

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

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