DS2755E 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS2755E Datasheet PDF : 20 Pages
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DS2755: High-Accuracy Battery Fuel Gauge with Snapshot
Figure 9. INTERRUPT THRESHOLD REGISTER FORMATS
Current Accumulator Interrupt High Threshold
MSB—Address 80
S 214 213
MSb
212 211 210
29 28
LSb
LSB—Address 81
27 26 25 24 23 22 21 20
MSb
LSb
Units: 6.25μVhrs
Current Accumulator Interrupt Low Threshold
MSB—Address 82
S 214 213 212 211 210 29 28
MSb
LSb
LSB—Address 83
27 26 25 24 23 22 21 20
MSb
LSb
Units: 6.25μVhrs
Temperature Interrupt High Threshold
Address 84
S 26 25 24 23 22 21 20
MSb
LSb
Units: 1.0°C
Temperature Alarm Low Threshold
Address 85
S 26 25 24 23 22 21 20
MSb
LSb
Units: 1.0°C
SNAPSHOT MODE
Measurement of the current and voltage can be synchronized to a system event with the Snapshot mode.
Triggering a Snapshot event causes the ADC to abandon the current conversion and capture one current and one
voltage sample. The Snapshot results are reported in the Current and Voltage registers for retrieval by the host.
Normal current, voltage and temperature measurements and current accumulation resume immediately following a
Snapshot event, though the Snapshot current and voltage values persist until the host system writes the SNAP bit
in the Special Function Register to a 0. Since the snapshot mode disrupts the continuity of the coulomb counting
process, it should be used sparingly.
The Sync Function Command [D2h] signals the ADC control to expect a Snapshot trigger on DQ. Following the
Sync command, the host can trigger a Snapshot event by toggling the DQ line. Synchronization occurs on the
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