Ac electrical characteristics—2-wire interface – Rainbow Electronics DS1087L User Manual

Page 4

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DS1087L

3.3V Spread-Spectrum EconOscillator

4

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AC ELECTRICAL CHARACTERISTICS—2-WIRE INTERFACE

(V

CC

= 2.7V to 3.6V, T

A

= 0°C to +70°C.)

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

Fast mode (Note 8)

400

SCL Clock Frequency

f

SCL

Standard mode (Note 8)

100

kHz

Fast mode (Note 8)

1.3

Bus Free Time Between a STOP
and START Condition

t

BUF

Standard mode (Note 8)

4.7

µs

Fast mode (Notes 8 and 9)

0.6

Hold Time (repeated) START
Condition

t

HD:STA

Standard mode (Notes 8 and 9)

4.0

µs

Fast mode (Note 8)

1.3

LOW Period of SCL

t

LOW

Standard mode (Note 8)

4.7

µs

Fast mode (Note 8)

0.6

HIGH Period of SCL

t

HIGH

Standard mode (Note 8)

4.0

µs

Fast mode

0.6

Setup Time for a Repeated
START

t

SU:STA

Standard mode

4.7

µs

Fast mode (Notes 8, 10, and 11)

0

0.9

Data Hold Time

t

HD:DAT

Standard mode (Notes 8, 10, and 11)

0

0.9

µs

Fast mode (Note 8)

100

Data Setup Time

t

SU:DAT

Standard mode (Note 8)

250

ns

Fast mode (Note 12)

20 + 0.1C

B

300

Rise Time of Both SDA and SCL
Signals

t

R

Standard mode (Note 12)

20 + 0.1C

B

1000

ns

Fast mode (Note 12)

20 + 0.1C

B

300

Fall Time of Both SDA and SCL
Signals

t

F

Standard mode (Note 12)

20 + 0.1C

B

1000

ns

Fast mode

0.6

Setup Time for STOP

t

SU:STO

Standard mode

4.0

µs

Capacitive Load for Each Bus

C

B

(Note 12)

400

pF

NV Write Cycle Time

t

WR

10

ms

Input Capacitance

C

I

5

pF

NONVOLATILE MEMORY CHARACTERISTICS

(V

CC

= 2.7V to 3.6V)

PARAMETER

SYMBOL

CONDITION

MIN

TYP

MAX

UNITS

Writes

+70°C

10,000

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