DS1307 64 x 8, Serial, I

2C Real-Time Clock

2 of 14

ABSOLUTE MAXIMUM RATINGS

Voltage Range on Any Pin Relative to Ground ....................................................................................-0.5V to +7.0V

Operating Temperature Range (Noncondensing)

Commercial................................................................................................................................0°C to +70°C

Industrial ..................................................................................................................................-40°C to +85°C

Storage Temperature Range ............................................................................................................. -55°C to +125°C

Soldering Temperature (DIP, leads)........................................................................................+260°C for 10 seconds

Soldering Temperature (surface mount)…..……………………….Refer to the JPC/JEDEC J-STD-020 Specification.

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

RECOMMENDED DC OPERATING CONDITIONS

(TA = 0°C to +70°C, TA = -40°C to +85°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage

VCC

4.5

5.0

5.5

V

Logic 1 Input

VIH

2.2

VCC + 0.3

V

Logic 0 Input

VIL

-0.3

+0.8

V

VBAT Battery Voltage

VBAT

2.0

3

3.5

V

DC ELECTRICAL CHARACTERISTICS

(VCC = 4.5V to 5.5V; TA = 0°C to +70°C, TA = -40°C to +85°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Leakage (SCL)

ILI

-1

1

μA

I/O Leakage (SDA, SQW/OUT)

ILO

-1

1

μA

Logic 0 Output (IOL = 5mA)

VOL

0.4

V

Active Supply Current

(fSCL = 100kHz)

ICCA

1.5

mA

Standby Current

ICCS

(Note 3)

200

μA

VBAT Leakage Current

IBATLKG

5

50

nA

Power-Fail Voltage (VBAT = 3.0V)

VPF

1.216 x

VBAT

1.25 x

VBAT

1.284 x

VBAT

V

DC ELECTRICAL CHARACTERISTICS

(VCC = 0V, VBAT = 3.0V; TA = 0°C to +70°C, TA = -40°C to +85°C.) (Notes 1, 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VBAT Current (OSC ON);

SQW/OUT OFF

IBAT1

300

500

nA

VBAT Current (OSC ON);

SQW/OUT ON (32kHz)

IBAT2

480

800

nA

VBAT Data-Retention Current

(Oscillator Off)

IBATDR

10

100

nA

WARNING: Negative undershoots below -0.3V while the part is in battery-backed mode may cause loss of data.