HS401x Datasheet

R36DS0023EU0103 Rev.1.03

Jun 6, 2022

Page 19

Setting

Register

Address

(HEX)

Bits

Description

Trigger Threshold for

Temperature High

Alert

0x08, 0x07

<13:0>

Registers 0x08, 0x07 set the threshold for when the “Temperature High”

alert is triggered. When the measured temperature goes above the value in

this register, the Alert pin will be triggered.

The temperature used for the threshold is composed of 14-bits as follows:

This 14-bit value is converted into a temperature threshold using the same

conversion equation shown in section 4.4.3.

Reset Threshold for

Temperature High

Alert

0x06, 0x05

<13:0>

Registers 0x06, 0x05 set the threshold for when the “Temperature High”

alert condition is reset. After the alert is triggered, it will only be reset after

the measured temperature goes below the value in this register.

The temperature used for the threshold is composed of 14-bits as follows:

This 14-bit value is converted into a temperature threshold using the same

conversion equation shown in section 4.4.3.

Trigger Threshold for

Temperature Low Alert

0x0A, 0x09

<13:0>

Registers 0x0A, 0x09 set the threshold for when the “Temperature Low”

alert is triggered. When the measured temperature goes below the value in

this register, the Alert pin will be triggered.

The temperature used for the threshold is composed of 14-bits as follows:

This 14-bit value is converted into a temperature threshold using the same

conversion equation shown in section 4.4.3.

Reset Threshold for

Temperature Low Alert

0x0C, 0x0B

<13:0>

Registers 0x0C, 0x0B set the threshold for when the “Temperature Low”

alert condition is reset. After the alert is triggered, it will only be reset after

the measured temperature goes above the value in this register.

The temperature used for the threshold is composed of 14-bits as follows:

This 14-bit value is converted into a temperature threshold using the same

conversion equation shown in section 4.4.3.

Trigger Threshold for

Relative Humidity High

Alert

0x10, 0x0F

<13:0>

Registers 0x10, 0x0F set the threshold for when the “RH High” alert is

triggered. When the measured RH goes above the value in this register,

the Alert pin will be triggered.

The humidity used for the threshold is composed of 14-bits as follows:

This 14-bit value is converted into a humidity threshold using the same

conversion equation shown in section 4.4.3.

0

0

0

0

0

1

0

1

1

0

0

0

0

0

0

0

0's

Trigger Threshold [13:8]

Trigger Threshold [7:0]

Register 0x08

Register 0x07

0

0

0

0

0

1

0

1

1

0

0

0

0

0

0

0

Register 0x06

Register 0x05

0's

Reset Threshold [13:8]

Reset Threshold [7:0]

0

0

0

0

0

1

0

1

1

0

0

0

0

0

0

0

Register 0x0A

Register 0x09

0's

Trigger Threshold [13:8]

Trigger Threshold [7:0]

0

0

0

0

0

1

0

1

1

0

0

0

0

0

0

0

Register 0x0C

Register 0x0B

0's

Reset Threshold [13:8]

Reset Threshold [7:0]

0

0

0

0

0

1

0

1

1

0

0

0

0

0

0

0

0's

Trigger Threshold [13:8]

Trigger Threshold [7:0]

Register 0x10

Register 0x0F