DS3232M datasheet(3/23 Pages) MAXIM

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�� Maxim Integrated Products 3

DS3232M

±5ppm, I2C Real-Time Clock with SRAM

DC ELECTRICAL CHARACTERISTICS—GENERAL (continued)

(VCC = +2.3V to +4.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = +3.3V, VBAT = +3.0V, and

TA = +25NC, unless otherwise noted.) (Note 1)

DC ELECTRICAL CHARACTERISTICS—VBAT CURRENT CONSUMPTION

(VCC = 0V, VBAT = +2.3V to +4.5V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VCC = 0V, VBAT = +3.0V, and

TA = +25NC, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Temperature Conversion Current

(I2C Inactive)

ICCSCONV

200

350

µA

Power-Fail Voltage

VPF

2.45

2.575

2.70

Logic 0 Output

(32KHZ, INT/SQW, SDA)

VOL

IOL = 3mA

0.4

Logic 0 Output (RST)

VOL

IOL = 1mA

0.4

Logic 1 Output (32KHZ)

VOH

Active supply > 3.3V, IOH = -1mA

2.0

Active supply > 2.7V, IOH = -0.75mA

2.0

Active supply > 2.3V, IOH = -0.14mA

2.0

Output Leakage

(32KHZ, INT/SQW, SDA)

ILO

-0.1

+0.1

µA

Input Leakage (SCL)

ILI

-0.1

+0.1

µA

RST I/O Leakage

IOL

-200

+10

µA

VBAT Leakage

IBATLKG

TA = +25NC

-100

+100

Temperature Accuracy

TEMPACC VCC or VBAT = +3.3V

Temperature Conversion Time

tCONV

Pushbutton Debounce

PBDB

250

Reset Active Time

tRST

250

Oscillator Stop Flag (OSF) Delay

tOSF

(Note 4)

100

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Active Battery Current

(I2C Active)

IBATA

(Note 2)

µA

Timekeeping Battery Current

(I2C Inactive)

IBATT

EN32KHZ = 0, INTCN = 1 (Note 2)

1.8

3.0

µA

Temperature Conversion Current

(I2C Inactive)

IBATTC

200

350

µA

Data Retention Current

(Oscillator Stopped and I2C

Inactive)

IBATDR

TA = +25NC

100

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