Rainbow-electronics DS2788 Manuel d'utilisateur télécharger pdf (Page 4)

DS2788

Stand-Alone Fuel-Gauge IC with

LED Display Drivers

4 _______________________________________________________________________________________

Note 1: All voltages are referenced to V

Note 2: Factory-calibrated accuracy. Higher accuracy can be achieved by in-system calibration by the user.

Note 3: Parameters guaranteed by design.

Note 4: At a constant regulated V

voltage, the Current Offset Bias register can be used to obtain higher accuracy.

Note 5: Accumulation Bias register set to 00h.

Note 6: EEPROM data retention is 10 years at +50°C.

ELECTRICAL CHARACTERISTICS: 1-Wire INTERFACE, OVERDRIVE

= 2.5V to 5.5V, T

= -25°C to +70°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Time Slot t

LOT

6 16 µs

Recovery Time t

REC

1 µs

Write-0 Low Time t

LOW0

6 16 µs

Write-1 Low Time t

LOW1

1 2 µs

Read Data Valid t

RDV

2 µs

Reset-Time High t

RSTH

48 µs

Reset-Time Low t

RSTL

48 80 µs

Presence-Detect High t

PDH

2 6 µs

Presence-Detect Low t

PDL

8 24 µs

EEPROM RELIABILITY SPECIFICATION

= 2.5V to 5.5V, T

= -25°C to +70°C, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

EEPROM Copy Time t

EEC

10 ms

EEPROM Copy Endurance N

EEC

= +50°C (Note 6) 50,000 Cycles

1 2 3 4 5 6 7 8 9 ... 29 30

LED Display Drivers 1

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Rainbow-electronics DS2788 Manuel d'utilisateur Page 4

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