Rainbow-electronics DS1631 Manual de usuario descargar pdf (Pagina 13)

DS1631

13 of 14

EEPROM AC ELECTRICAL CHARACTERISTICS

(-55°C to +100°C; V

= 2.7V to 5.5V)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

EEPROM Write Cycle Time t

410ms

EEPROM Writes N

EEWR

-55°C to +55°C 50k writes

EEPROM Data Retention t

EEDR

-55°C to +55°C 10 years

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

= 2.7V to 5.5V)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES

9-bit resolution 93.75

10-bit resolution 187.5

11-bit resolution 375

Temperature

Conversion Time

12-bit resolution 750

SCL Frequency f

SCL

0 400 kHz

Bus Free Time

Between a STOP and

START Condition

BUF

1.3 µs 1

START and Repeated

START Hold Time

from Falling SCL

HD:STA

0.6 µs 1, 2

Low Period of SCL t

LOW

1.3 µs 1

High Period of SCL t

HIGH

0.6 µs 1

Repeated START

Condition Setup Time

to Rising SCL

SU:STA

0.6 µs 1

Data-Out Hold Time

from Falling SCL

HD:DAT

0 0.9 µs 1

Data-In Setup Time to

Rising SCL

SU:DAT

100 ns 1

Rise Time of SDA and

SCL

20 +

0.1C

1000 ns 1, 3

Fall time of SDA and

SCL

20 +

0.1C

300 ns 1, 3

STOP Setup Time to

Rising SCL

SU:STO

0.6 µs 1

Capacitive Load for

each Bus Line

400 pF

I/O Capacitance C

I/O

10 pF

Input Capacitance C

5pF

Spike Pulse Width that

can be Suppressed by

Input Filter

050ns

All values referenced to V

= 0.9 V

and V

= 0.1 V

NOTES:

1) See timing diagram in Figure 8.

2) After this period the first clock pulse is generated.

3) For example, if C

= 300pF, then t

[min] = t

[min] = 50ns.

1 2 ... 8 9 10 11 12 13 14

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Rainbow-electronics DS1631 Manual de usuario Pagina 13

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