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Retention

0x04

Device ID (24-31) Bit

0x0C

Retention

0x14

Retention

0x1C

Retention

0x05

Device ID (24-31) Bit

0x0D

Retention

0x15

Retention

0x1D

Retention

0x06

Device ID (24-31) Bit

0x0E

Retention

0x16

Retention

0x1E

Retention

0x07

Status Register

0x0F

Retention

0x17

Retention

0x1F

◎Temperature output format

Temperature resolution is 16Bit, temperature highest bit (Bit15) is equal to 1 indicates a

negative temperature, the temperature highest bit (Bit15) is equal to 0 indicates a positive

temperature; temperature in addition to the most significant bit (Bit14 ~ Bit0) indicates the

temperature sensor string value. Temperature sensor value is a string of 10 times the actual

temperature value.

◎Status Register

Status Register, Bit7-Bit0 bit, temporarily reserved

Status

register

bits

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Features

Retention

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◎I C Mod Bus Function Code Description

1. Function code "03": Read registers multiplexed sensor

The host sends reading frame format：

START + (I C address + W) + function code (0x03) + start address + number of registers

+ STOP

Host read return data:

START + (I C address + R) + sequential read sensor data returned + STOP

Sensor response frame format:

Function code (0x03) + number + data +CRC

For example: Host sequential read sensor data: the starting address for the register data of four

sensors 0x00.

Sensor data register address and data:

Register Address

Register data

Data Description

Register Address

Register data

Data Description

0x00

0x01

High humidity

0x02

0x00

High temperature

0x01

0XF4

Low humidity

0x03

0xFA

Low temperature

Host message format sent:

The host sends

Byte count

Transmitting information

Remarks

Sensor address

1

0xB8

Sensor C address (0xB8) + W (0)

2

2

2

]

1

[

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Enterprise QQ: 4006305378

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