DS2780 Maxim Integrated Products, DS2780 Datasheet - Page 17

• Manufacturer Part Number: DS2780
• Description: Stand-Alone Fuel Gauge IC
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
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 14. Control Register Format
Address
Field
Reserved
UVEN
PMOD
RNAOP
Reserved
SPECIAL FEATURE REGISTER
All Special Feature Register bits are read and write accessible, with default values specified in each bit definition.
Figure 15. Special Feature Register Format
Address
Field
Reserved
PIOSC
EEPROM REGISTER
The EEPROM register provides access control of the EEPROM blocks. EEPROM blocks can be locked to prevent
alteration of data within the block. Locking a block disables write access to the block. Once a block is locked, it
cannot be unlocked. Read access to EEPROM blocks is unaffected by the lock/unlock status.
60h
15h
0:3
1:7
Bit
Bit
7
6
5
4
0
Read/Write
Read/Write
Read/Write
Read/Write
Format
Format
Bit Definition
Allowable Values
Undefined
Under Voltage SLEEP Enable
0: Disables transition to SLEEP mode based on VIN voltage
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
Undefined
Bit Definition
Allowable Values
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
VIN < V
used as an input
17 of 27
SLEEP
AND DQ stable at either logic level for t
DS2780 Stand-Alone Fuel Gauge IC
SLEEP
SLEEP