DS2781G+ Maxim Integrated Products, DS2781G+ Datasheet - Page 20

• Manufacturer Part Number: DS2781G+
• Description: IC FUEL GAUGE STND ALONE 10-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2781G+

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2.5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Operating Supply Voltage: 2.5 V to 10 V
• Supply Current: 70 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CONTROL REGISTER
All CONTROL register bits are read and write accessible. The CONTROL register is recalled from Parameter
EEPROM memory at power-up. Register bit values can be modified in shadow RAM after power-up. Shadow RAM
values can be saved as the power up default values by using the Copy Data command.
Figure 19. Control Register Format
NBEN
UVEN
PMOD
RNAOP
UVTH
Reserved
SPECIAL FEATURE REGISTER
All Special Feature Register bits are read and write accessible, with default values specified in each bit definition.
Figure 20. Special Feature Register Format
Reserved
PIOSC
ADDRESS
ADDRESS
FIELD
FIELD
60h
15h
BIT
BIT
0:2
1:7
7
6
5
4
3
0
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
FORMAT
FORMAT
—
—
Undefined
Negative Blanking Enable
0: Allows negative current readings to always be accumulated
1: Enables blanking of negative current readings up to -25µV
Under Voltage SLEEP Enable
0: Disables transition to SLEEP mode based on V
1: Enables transition to SLEEP mode if,
Power Mode Enable
0: Disables transition to SLEEP mode based on DQ logic state
1: Enables transition to SLEEP mode if DQ at a logic-low for t
Read Net Address Opcode
0: Read Net Address Command = 33h
1: Read Net Address Command = 39h
Under Voltage Threshold Select
0: Selects an Under Voltage Sleep threshold of 2.45V
1: Selects an Under Voltage Sleep threshold of 4.9V
Undefined
PIO Sense and Control
Read values
0: PIO pin ≤ Vil
1: PIO pin ≥ Vih
Write values
0: Activates PIO pin open-drain output driver, forcing the PIO pin low
1: Disables the output driver, allowing the PIO pin to be pulled high or
Power-up and SLEEP mode default: 1 (PIO pin is hi-Z)
Note: PIO pin has weak pulldown
V
used as an input
IN
< V
SLEEP
20 of 31
AND DQ stable at either logic level for t
ALLOWABLE VALUES
ALLOWABLE VALUES
BIT DEFINITION
BIT DEFINITION
IN
voltage
SLEEP
SLEEP