Rainbow-electronics DS2432 Manual do Utilizador descarregar pdf (Página 29)

PRELIMINARY DS2432

29 of 30

ABSOLUTE MAXIMUM RATINGS*

Voltage on Any Pin Relative to Ground -0.5V to +5.5V

Operating Temperature -40°C to +85°C

Storage Temperature -55°C to +125°C

Soldering Temperature See J-STD-020A specification

* This is a stress rating only and functional operation of the device at these or any other conditions above

those indicated in the operation sections of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods of time may affect reliability.

DC ELECTRICAL CHARACTERISTICS (V

PUP

=2.8V to 5.25V; -40°C to +85°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

1-Wire Input High V

2.2 V 1, 7

1-Wire Input Low V

-0.3 TBD V 1, 8

1-Wire Output Low @ 4 mA V

0.4 V 1

1-Wire Output High V

PUP

V 1, 2

Input Load Current I

5µA3

Programming Current I

LPROG

500 µA 9

CAPACITANCE (t

= 25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

1-Wire I/O C

IN/OUT

100 800 pF 5

ENDURANCE (V

PUP

=5.0V; T

= 25°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Write/Erase Cycles N

CYCLE

50k —

Data Retention t

DRET

10 years

AC ELECTRICAL CHARACTERISTICS

REGULAR SPEED (V

PUP

=2.8V to 5.25V; -40°C to +85°C)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Time Slot t

SLOT

60 120 µs

Write 1 Low Time t

LOW1

115µs

Write 0 Low Time t

LOW0

60 120 µs

Read Low Time t

LOWR

115µs

Read Data Valid t

RDV

15 µs 10

Release Time t

RELEASE

01545µs

Read Data Setup t

1µs4

Recovery Time t

REC

1µs

Reset High Time t

RSTH

480 µs

Reset Low Time t

RSTL

480 µs 6

Presence Detect High t

PDHIGH

15 60 µs

Presence Detect Low t

PDLOW

60 240 µs

Programming Time t

PROG

10 ms

SHA Computation Time t

CSHA

1.0 2.0 ms 9

1 2 ... 24 25 26 27 28 29 30

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Rainbow-electronics DS2432 Manual do Utilizador Página 29

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