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Ds 2 7 8 8, Stand-alone fuel-gauge ic with led display drivers, Control register – Rainbow Electronics DS2788 User Manual

Page 18

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D

S

2

7

8

8

All Control register bits are read and write accessible.

T h e C o n t r o l r e g i s t e r i s r e c a l l e d f r o m p a r a m e t e r

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 val-

ues by using the Copy Data command.

Stand-Alone Fuel-Gauge IC with
LED Display Drivers

18

______________________________________________________________________________________

Control Register

ADDRESS

60h

BIT DEFINITION

Field

Bit

Format

Allowable Values

NBEN

7

Read/Write

Negative Blanking Enable

0: Allows negative current readings to always be accumulated.

1: Enables blanking of negative current readings up to -25µV.

UVEN

6

Read/Write

Undervoltage SLEEP Enable

0: Disables transition to SLEEP mode based on V

IN

voltage.

1: Enables transition to SLEEP mode if V

IN

< V

SLEEP

and DQ are stable at either

logic level for t

SLEEP.

PMOD

5

Read/Write

Power Mode Enable

0: Disables transition to SLEEP mode based on DQ logic state.

1: Enables transition to SLEEP mode if DQ is at a logic-low for t

SLEEP.

RNAOP

4

Read/Write

Read Net Address Op Code

0: Read net address command = 33h.

1: Read net address command = 39h.

DC

3

Read/Write

Display Control

0: Enables LED5 fuel-gauge display.

1: Enables LED4 fuel-gauge display.

Reserved

0:2

Undefined

Figure 15. Control Register Format