DS1338Z-33+ datasheet(3/16 Pages) MAXIM

Part #	DS1338Z-33+

Description	I2C RTC with 56-Byte NV RAM

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Manufacturer	MAXIM [Maxim Integrated Products]

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DS1338 I2C RTC with 56-Byte NV RAM

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DC ELECTRICAL CHARACTERISTICS

(

VCC = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VBAT = 3.0V, TA = +25°C, unless

otherwise noted.) (Note 1)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

VBAT Current (OSC ON); VBAT = 3.7V, SQW/OUT OFF (Note 7)

IBATOSC1

800

1200

nA

VBAT Current (OSC ON); VBAT = 3.7V, SQW/OUT ON (32kHz)

(Note 7)

IBATOSC2

1025

1400

nA

VBAT Data-Retention Current (Osc Off); VBAT = 3.7V (Note 7)

IBATDAT

10

100

nA

AC ELECTRICAL CHARACTERISTICS

(VCC = VCC(MIN) to VCC(MAX), TA = -40°C to +85°C) (Note 1)

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

SCL Clock Frequency

fSCL

Fast mode

100

400

kHz

Standard mode

0

100

Bus Free Time Between STOP

and START Condition

tBUF

Fast mode

1.3

µ

s

Standard mode

4.7

Hold Time (Repeated) START

Condition (Note 8)

tHD:STA

Fast mode

0.6

µ

s

Standard mode

4.0

LOW Period of SCL Clock

tLOW

Fast mode

1.3

µ

s

Standard mode

4.7

HIGH Period of SCL Clock

tHIGH

Fast mode

0.6

µ

s

Standard mode

4.0

Setup Time for Repeated

START Condition

tSU:STA

Fast mode

0.6

µ

s

Standard mode

4.7

Data Hold Time (Notes 9, 10)

tHD:DAT

Fast mode

0

0.9

µ

s

Standard mode

0

Data Setup Time (Note 11)

tSU:DAT

Fast mode

100

ns

Standard mode

250

Rise Time of Both SDA and

SCL Signals (Note 12)

tR

Fast mode

20 + 0.1CB

300

ns

Standard mode

20 + 0.1CB

1000

Fall Time of Both SDA and

SCL Signals (Note 12)

tF

Fast mode

20 + 0.1CB

300

ns

Standard mode

20 + 0.1CB

300

Setup Time for STOP

Condition

tSU:STO

Fast mode

0.6

µ

s

Standard mode

4.0

Capacitive Load for Each Bus

Line

CB

(Note 12)

400

pF

I/O Capacitance (SDA, SCL)

CI/O

(Note 13)

10

pF

Oscillator Stop Flag (OSF)

Delay

tOSF

(Note 14)

100

ms

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