BQ2084DBT-V143G4 datasheet(5/69 Pages) TI

Part #	BQ2084DBT-V143G4

Description	SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

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SMBus TIMING DIAGRAMS

bq2084-V143

SLUS732 – SEPTEMBER 2006

SMBus TIMING SPECIFICATIONS (continued)

V

DD = 3 V to 3.6 V, TA = -20°C to 85°C unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

t(HIGH)

Clock high period

See (2)

4

50

µs

tLOW:SEXT)

Cumulative clock low slave extend time

See (3)

25

ms

tLOW:MEXT

Cumulative clock low master extend time

See (4)

10

ms

tf

Clock/data fall time

(VILMAX – 0.15 V) to (VIHMIN + 0.15 V)

300

ns

tr

Clock/data rise time

0.9 VDD to (VILMAX– 0.15 V)

1000

ns

(2)

t(HIGH) Max. is minimum bus idle time. SMBC = 1 for t > 50 ms causes reset of any transaction involving bq2084-V143 that is in

progress.

(3)

t(LOW:SEXT) is the cumulative time a slave device is allowed to extend the clock cycles in one message from initial start to the stop.

(4)

t(LOW:MEXT) is the cumulative time a master device is allowed to extend the clock cycles in one message from initial start to the stop.

5

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