Extremely Accurate SPI Bus RTC with

Integrated Crystal and SRAM

2

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ABSOLUTE MAXIMUM RATINGS

RECOMMENDED DC OPERATING CONDITIONS

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 Any Pin 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

Soldering Temperature

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

Soldering Temperature (reflow, 2 times max) .......See IPC/JEDEC

J-STD-020 Specification

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

2.0

3.3

5.5

Supply Voltage

2.0

3.0

3.8

V

Logic 1 Input

CS, SCLK, DIN

0.7 x

0.3

V

2.0V

3.63V

-0.3

+0.2 x

Logic 0 Input

CS, SCLK, DIN,

RST

5.5V

-0.3

+0.7

V

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

400

Active Supply Current

SCLK = 4MHz, BSY = 0

(Notes 3, 4)

700

µA

120

Standby Supply Current

SQW output off

(Note 4)

160

µA

500

Temperature Conversion Current

SPI bus inactive, 32kHz

output off, SQW output off

600

µA

Power-Fail Voltage

2.45

2.575

2.70

V

25

100

nA

Logic 1 Output, 32kHz

(BB32kHz = 1)

V