Datasheet
DS2782
17 of 28
RESULT REGISTERS
The DS2782 processes measurement and cell characteristics on a 3.5s interval and yields seven result registers.
The result registers are sufficient for direct display to the user in most applications. The host system can produce
customized values for system use, or user display by combining measurement, result and User EEPROM values.
FULL(T) [ ]: The Full capacity of the battery at the present temperature is reported normalized to the 40°C Full
value. This 15-bit value reflects the cell model Full value at the given temperature. FULL(T) reports values between
100% and 50% with a resolution of 61ppm (precisely 2
-14
). Though the register format permits values greater than
100%, the register value is clamped to a maximum value of 100%.
Active Empty, AE(T) [ ]: The Active Empty capacity of the battery at the present temperature is reported
normalized to the 40°C Full value. This 13-bit value reflects the cell model Active Empty at the given temperature.
AE(T) reports values between 0% and 49.8% with a resolution of 61ppm (precisely 2
-14
).
Standby Empty, SE(T) [ ]: The Standby Empty capacity of the battery at the present temperature is reported
normalized to the 40°C Full value. This 13-bit value reflects the cell model Standby Empty value at the current
temperature. SE(T) reports values between 0% and 49.8% with a resolution of 61ppm (precisely 2
-14
).
Remaining Active Absolute Capacity (RAAC) [mAh]: RAAC reports the capacity available under the current
temperature conditions at the Active Empty discharge rate (IAE) to the Active Empty point in absolute units of milli-
amp-hours. RAAC is 16 bits. See Figure 14.
Figure 14. Remaining Active Absolute Capacity Register Format
Remaining Standby Absolute Capacity (RSAC) [mAh]: RSAC reports the capacity available under the current
temperature conditions at the Standby Empty discharge rate (ISE) to the Standby Empty point capacity in absolute
units of milli-amp-hours. RSAC is 16 bits. See Figure 15.
Figure 15. Remaining Standby Absolute Capacity Register Format
RAAC
Read Only
MSB—Address 02h LSB—Address 03h
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
MSb LSb MSb LSb
Units:1.6mAh
r
RSAC
Read Only
MSB—Address 04h LSB—Address 05h
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
MSb LSb MSb LSb
Units:1.6mAh
r