
DS2781: Two-Cell Standalone Fuel Gauge IC
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Table 2. MEMORY MAP
ADDRESS (HEX) DESCRIPTION READ/WRITE
00 Reserved R
01
STATUS - Status Register
R/W
02
RAAC - Remaining Active Absolute Capacity MSB
R
03
RAAC - Remaining Active Absolute Capacity LSB
R
04
RSAC - Remaining Standby Absolute Capacity MSB
R
05
RSAC - Remaining Standby Absolute Capacity LSB
R
06
RARC - Remaining Active Relative Capacity
R
07
RSRC - Remaining Standby Relative Capacity
R
08
IAVG - Average Current Register MSB
R
09
IAVG - Average Current Register LSB
R
0A
TEMP - Temperature Register MSB
R
0B
TEMP - Temperature Register LSB
R
0C
VOLT - Voltage Register MSB
R
0D
VOLT - Voltage Register LSB
R
0E
CURRENT - Current Register MSB
R
0F
CURRENT - Current Register LSB
R
10
ACR - Accumulated Current Register MSB
R/W*
11
ACR - Accumulated Current Register LSB
R/W *
12
ACRL – Low Accumulated Current Register MSB
R
13
ACRL – Low Accumulated Current Register LSB
R
14
AS - Age Scalar
R/W *
15
SFR - Special Feature Register
R/W
16
FULL - Full Capacity MSB
R
17
FULL - Full Capacity LSB
R
18
AE - Active Empty MSB
R
19
AE - Active Empty LSB
R
1A
SE - Standby Empty MSB
R
1B
SE - Standby Empty LSB
R
1C to 1E Reserved —
1F
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.
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