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

Part #	DS1338Z-3+

Description	I2C RTC with 56-Byte NV RAM

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Manufacturer	MAXIM [Maxim Integrated Products]

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DS1338 I

2C RTC with 56-Byte NV RAM

3 of 16

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

Fast mode

100

400

SCL Clock Frequency

fSCL

Standard mode

0

100

kHz

Fast mode

1.3

Bus Free Time Between STOP

and START Condition

tBUF

Standard mode

4.7

μs

Fast mode

0.6

Hold Time (Repeated) START

Condition (Note 8)

tHD:STA

Standard mode

4.0

μs

Fast mode

1.3

LOW Period of SCL Clock

tLOW

Standard mode

4.7

μs

Fast mode

0.6

HIGH Period of SCL Clock

tHIGH

Standard mode

4.0

μs

Fast mode

0.6

Setup Time for Repeated

START Condition

tSU:STA

Standard mode

4.7

μs

Fast mode

0

0.9

Data Hold Time (Notes 9, 10)

tHD:DAT

Standard mode

0

μs

Fast mode

100

Data Setup Time (Note 11)

tSU:DAT

Standard mode

250

ns

Fast mode

20 + 0.1CB

300

Rise Time of Both SDA and

SCL Signals (Note 12)

tR

Standard mode

20 + 0.1CB

1000

ns

Fast mode

20 + 0.1CB

300

Fall Time of Both SDA and

SCL Signals (Note 12)

tF

Standard mode

20 + 0.1CB

300

ns

Fast mode

0.6

Setup Time for STOP

Condition

tSU:STO

Standard mode

4.0

μs

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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