Rainbow-electronics DS1621 Manual de usuario descargar pdf (Pagina 14)

DS1621

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AC ELECTRICAL CHARACTERISTICS (-55°C to +125°C; V

=2.7V to 5.5V)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

Temperature

Conversion Time

0.4 1 s

NV Write Cycle

Time

0°C to 70°C 10 50 ms 10

SCL Clock

Frequency

SCL

Fast Mode

Standard Mode

400

100

KHz

Bus Free Time

Between a STOP

and START

Condition

BUF

Fast Mode

Standard Mode

1.3

4.7

µs

Hold Time

(Repeated) START

Condition

HD:STA

Fast Mode

Standard Mode

0.6

4.0

µs 5

Low Period of SCL

Clock

LOW

Fast Mode

Standard Mode

1.3

4.7

µs

High Period of SCL

Clock

HIGH

Fast Mode

Standard Mode

0.6

4.0

µs

Setup Time for a

Repeated START

Condition

SU:STA

Fast Mode

Standard Mode

0.6

4.7

µs

Data Hold Time t

HD:DAT

Fast Mode

Standard Mode

0.9 µs 6, 7

Data Setup Time t

SU:DAT

Fast Mode

Standard Mode

100

250

ns 8

Rise Time of Both

SDA and SCL

Signals

Fast Mode

Standard Mode

20+0.1C

300

1000

ns 9

Fall Time of both

SDA and SCL

Signals

Fast Mode

Standard Mode

20+0.1C

300

ns 9

Setup time for

STOP Condition

SU:STO

Fast Mode

Standard Mode

0.6

4.0

µs

Capacitative Load

for each Bus Line

400 pF

All values referred to V

=0.9 V

and V

=0.1 V

AC ELECTRICAL CHARACTERISTICS (-55°C to +125°C; VDD=2.7V to 5.5V)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Input Capacitance C

5 pF

1 2 ... 9 10 11 12 13 14 15 16

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Rainbow-electronics DS1621 Manual de usuario Pagina 14

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