Timing Diagram - Analog Devices LTC2941 Datasheet

LTC2941
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL PARAMETER
t Minimum Data Set-Up Time Input
SU,DAT(MIN)
t Minimum Data Hold Time Input
HD,DATI(MIN)
t Data Hold Time Output
HD,DATO
t Data Output Fall Time
Of
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive, all voltages are referenced to
GND unless otherwise specified
Note 3: I = I + I
SENSE –
SENSE +
SUPPLY
Note 4: The equivalent charge of an LSB in the accumulated charge
registers (C, D) depends on the value of R
internal prescaling factor M. It is calculated by:
50mΩ M
q = 0.085mAh • •
LSB
R 128
SENSE

TIMING DIAGRAM

SDA
SCL
t
HD, STA
START
CONDITION
4
The
l
= 25°C. (Note 2)
A
CONDITIONS
(Notes 6, 7)
and the setting of the
SENSE
t
t
SU, DAT
HD, DATO,
t
HD, DATI
REPEATED START
CONDITION
Figure 1. Definition of Timing on I
For more information
denotes the specifications which apply over the full operating
l
l
l
l
See Choosing R and Coulomb Counter Prescaler "M" B[5:3] section
SENSE
for more information.
1mAh = 3.6A • s = 3.6C (coulomb), 0.085mAh = 306mC.
Note 5: Deviation of q from its nominal value.
LSB
Note 6: C = capacitance of one bus line in pF (10pF ≤ C
B
Note 7: Guaranteed by design, not subject to test.
t
of
t
SU, STA
t
t
HD, STA
SU, STO
2
C Bus
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MIN TYP MAX
100
0
0.3 0.9
20 + 0.1 300
• C
B
≤ 400pF).
B
t
BUF
2941 F01
STOP START
CONDITION CONDITION
UNITS
ns
µs
µs
ns
Rev. C