NEC Barracuda Service Manual page 53

Pda
Table of Contents

Advertisement

1.5.3. Battery gas gauge: Dallas DS2760
Features
Li-Ion safety circuit
- Over voltage protection
- Over current/short circuit protection
- Under voltage protection
Available in two configurations:
- Internal 25 m? sense resistor
- External user-selectable sense resistor current measurement
- 12-bit bi-directional measurement
- Internal sense resistor configuration:0.625 mA LSB and ±1.8A dynamic range
- External sense resistor configuration:15.625 V LSB and ±64 mV dynamic range
Current accumulation
- Internal sense resistor: 0.25 mA /hr LSB
- External sense resistor: 6.25 Vhr LSB
Voltage measurement with 4.88 mV resolution
Temperature measurement using integrated sensor with 0.125 ℃ resolution
System power management and control feature support
32 bytes of lockable EEPROM
16 bytes of general purpose SRAM
Dallas 1-Wire® interface with unique 64-bit device address
Low power consumption:
- Active current: 90 uA max
- Sleep current: 2 uA max
Barracuda PDA Maintenance
52

Advertisement

Table of Contents
loading

Table of Contents