MPF42791 datasheet(66/75 Pages) MPS

66 / 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.

Customer Block

Name, Address

Description

Bit Length,

Position

Type

Encoding

Decoded

Default Value

Range

CUST_BLOCK_

PASSWORD,

0x5000

Sets the password to allow editing to the

customer block feature. To set a new

password, write a value to this register

while

configuration

mode

when

CUST_BLOCK_PASS_EDIT_EN

After

the

new

password

set,

CUST_BLOCK_PASS_EDIT_EN resets

to 0. When writing a new value for the

password, only the four password bytes

must be written, so the address used must

be 0x5000, and the data length must be

4. Users must exit configuration mode for

the new password to be stored in the fuel

gauge’s NVM.

To enable the customer block feature or

the editing of the password, send a write

command to address 0x5000 with a data

length of 3. This command should contain

the correct password and the correct

values

for

CUST_BLOCK_EN

and

CUST_BLOCK_PASS_EDIT_EN.

The content of this register can only be

read when CUST_BLOCK_FLAG = 0.

This register can only be written when

CONFIG_MODE_FLAG = 1.

32, [31:0]

R/W

32-bit unsigned

integer

LSB = 1

4294967295

0 to

4294967295

CUST_

BLOCK_EN,

0x5004

Enables the customer block feature. To

enable the customer block feature, send

a write command to address 0x5000, with

a data length of 5. This command should

contain the correct password, and the

correct value for this register must be

sent.

The CUST_BLOCK_FLAG flag is a mirror

of this register.

The content of this register can only be

read when CUST_BLOCK_FLAG = 0.

This register can only be written when

CONFIG_MODE_FLAG = 1.

1, [0]

R/W

Control

Enable = 1

Disable = 0

0 to 1

CUST_BLOCK_

PASS_EDIT_

EN,

0x5004

Enables

costumer

block

password

editing. To enable the customer block

feature, send a write command to address

0x5000, with a data length of 5. This

command should contain the correct

password, and the correct value for this

This register can only be set when

CUST_BLOCK_FLAG = 0; otherwise, it

stays at 0.

The content of this register can only be

read when CUST_BLOCK_FLAG = 0.

This register can only be written when

CONFIG_MODE_FLAG = 1.

1, [1]

R/W

Control

Enable = 1

Disable = 0

0 to 1

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