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DS2781: Two-Cell Standalone Fuel Gauge IC

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Table 2. MEMORY MAP

ADDRESS (HEX) DESCRIPTION READ/WRITE

00 Reserved R

STATUS - Status Register

R/W

RAAC - Remaining Active Absolute Capacity MSB

RAAC - Remaining Active Absolute Capacity LSB

RSAC - Remaining Standby Absolute Capacity MSB

RSAC - Remaining Standby Absolute Capacity LSB

RARC - Remaining Active Relative Capacity

RSRC - Remaining Standby Relative Capacity

IAVG - Average Current Register MSB

IAVG - Average Current Register LSB

TEMP - Temperature Register MSB

TEMP - Temperature Register LSB

VOLT - Voltage Register MSB

VOLT - Voltage Register LSB

CURRENT - Current Register MSB

CURRENT - Current Register LSB

ACR - Accumulated Current Register MSB

R/W*

ACR - Accumulated Current Register LSB

R/W *

ACRL – Low Accumulated Current Register MSB

ACRL – Low Accumulated Current Register LSB

AS - Age Scalar

R/W *

SFR - Special Feature Register

R/W

FULL - Full Capacity MSB

FULL - Full Capacity LSB

AE - Active Empty MSB

AE - Active Empty LSB

SE - Standby Empty MSB

SE - Standby Empty LSB

1C to 1E Reserved —

EEPROM - EEPROM Register

R/W

20 to 2F User EEPROM, Lockable, Block 0 R/W

30 to 5F Reserved —

60 to 7F Parameter EEPROM, Lockable, Block 1 R/W

80 to AF Reserved —

B0 to B1 FSGAIN – Factory Gain Calibration Value R

B2 to FF Reserved —

* Register value is automatically saved to EEPROM during ACTIVE mode operation and recalled from EEPROM

on power up.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 28 29 30

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