DS2780 Standalone Fuel Gauge IC

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the RARC result crosses 4% boundaries. This allows the DS2780 to be located outside the protection FETs. In this

manner, if a protection device is triggered, the DS2780 cannot lose more that 4% of charge or discharge data.

Table 2. MEMORY MAP

ADDRESS (HEX)

DESCRIPTION

READ/WRITE

00

Reserved

R

01

STATUS

- Status Register

R/W

02

RAAC

- Remaining Active Absolute Capacity MSB

R

03

RAAC

- Remaining Active Absolute Capacity LSB

R

04

RSAC

- Remaining Standby Absolute Capacity MSB

R

05

RSAC

- Remaining Standby Absolute Capacity LSB

R

06

RARC

- Remaining Active Relative Capacity

R

07

RSRC

- Remaining Standby Relative Capacity

R

08

IAVG

- Average Current Register MSB

R

09

IAVG

- Average Current Register LSB

R

0A

TEMP

- Temperature Register MSB

R

0B

TEMP

- Temperature Register LSB

R

0C

VOLT

- Voltage Register MSB

R

0D

VOLT

- Voltage Register LSB

R

0E

CURRENT

- Current Register MSB

R

0F

CURRENT

- Current Register LSB

R

10

ACR

- Accumulated Current Register MSB

R/W*

11

ACR

- Accumulated Current Register LSB

R/W *

12

ACRL

– Low Accumulated Current Register MSB

R

13

ACRL

– Low Accumulated Current Register LSB

R

14

AS

- Age Scalar

R/W *

15

SFR

- Special Feature Register

R/W

16

FULL

- Full Capacity MSB

R

17

FULL

- Full Capacity LSB

R

18

AE

- Active Empty MSB

R

19

AE

- Active Empty LSB

R

1A

SE

- Standby Empty MSB

R

1B

SE

- Standby Empty LSB

R

1C to 1E

Reserved

—

1F

EEPROM

- EEPROM Register

R/W

20 to 2F

User EEPROM, Lockable, Block 0

R/W

30 to 5F

Reserved

—

60 to 7F

Parameter EEPROM, Lockable, Block 1

R/W

80 to FF

Reserved

—

* Register value is automatically saved to EEPROM during ACTIVE mode operation and recalled from EEPROM

on power up.