MPF42791 datasheet(33/75 Pages) MPS

33 / 75 page

MPF42791 – 2 TO 16 BATTERY PACK FG W/ R DETECTION AND THERMAL MODEL

MPF42791 Rev. 1.0

MonolithicPower.com

9/19/2022

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

RCXN_CELL16_

BKUP,

0x03DE

These bits are the backup register for

cell 1 ’s

connection resistance state. This address is a

R/W alias for the RCXN_CELL16 register.

The fuel gauge must be in learning backup

mode for this register to be written. For more

details, see the FG_BKUP_ENABLE register

on page 33 and the FG_BKUP_FLAG register

on page 54.

Writing to this backup register or any other

cell RCXN register prepares the fuel gauge to

use the values written in this register as a

starting point for the RCXN learning.

16, [15:0]

R/W

16-bit unsigned

integer

LSB = 0.1m

Ω to

6553.5m

FG_BKUP_

ENABLE,

0x03F0

Enables learning backup mode. See the

FG_BKUP_FLAG register on page 54 for

more details.

1, [0]

Write-only

Control

Enable = 1

Disable = 0

0 to 1

Fuel Gauge Output

Name, Address

Description

Bit Length,

Position

Type

Encoding

Decoded

Default Value

Range

IT_DONE_INTR,

0x0400

Signals an interrupt when an iteration has

been completed. Setting this bit to 1

clears the interrupt. This interrupt bit is

automatically

cleared

when

new

iteration is requested.

1, [0]

W1C/RO

Boolean

true/false

0 to 1

STATUS_INTR,

0x0400

Signals an interrupt when there is a

change in the STATUS register. Setting

this bit to 1 clears the interrupt.

1, [1]

W1C/RO

Boolean

true/false

0 to 1

EMTY_LIM_

INTR,

0x0400

Signals an interrupt when there is a

change in the EMPTY_LIM register,

which indicates that the empty limiting

factor has changed. Setting this bit to 1

clears the interrupt.

1, [2]

W1C/RO

Boolean

true/false

0 to 1

FULL_LIM_

INTR,

0x0400

Signals an interrupt when there is a

change in the FULL_LIM register, which

indicates that the full limiting factor has

changed. Setting this bit to 1 clears the

interrupt.

1, [3]

W1C/RO

Boolean

true/false

0 to 1

SOC_PACK_

RSLT_INTR,

0x0400

Signals an interrupt when there is a

change

the

SOC_PACK_RSLT

SOC result has changed. Setting this bit

to 1 clears the interrupt.

1, [4]

W1C/RO

Boolean

true/false

0 to 1

OT_WARN_

INTR,

0x0400

Signals an interrupt when an over-

temperature (OT) condition occurs; check

the statuses of OT_ID, WARN_OTDIS,

WARN_OTCHG_CC,

and

WARN_OTCHG_END for more details.

Setting this bit to 1 clears the interrupt.

1, [5]

W1C/RO

Boolean

true/false

0 to 1

IDIS_AVG_

INTR,

0x0400

Signals an interrupt when there is a

change

the

IDIS_AVG_LRN

IDIS_AVG_RSLT

registers,

which

indicates a change for the average

discharge current learning. Setting this bit

to 1 clears the interrupt.

1, [6]

W1C/RO

Boolean

true/false

0 to 1

IDIS_END_

INTR,

0x0400

Signals an interrupt when there is a

change

the

IDIS_END_LRN

IDIS_END_RSLT

registers,

which

indicates a change for the discharge end

current learning. Setting this bit to 1 clears

the interrupt.

1, [7]

W1C/RO

Boolean

true/false

0 to 1

MPF42791 Datasheet(PDF) 33 Page - Monolithic Power Systems

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