TH01

Temperature and Humidity Module

2012-7-2

Version: 1.4

Fax: +86‐755‐86096602

E‐mail: sales@hoperf.com

http://www.hoperf.com

SCK pin is pull up with internal pull-up resistor.

SYN+CODE(data format)

RF

CODE

H/L(US)

0

488/488±20

1

488/1952±50

SYN

488/6958±50

TH01 with two mode

A or B mode Option

TH01 power on after 1 second start to detect the SCK PIN level

PIN level is high; it will work in B mode. SCK pin level must be set high after set mode, At least

3seonds the user can be read data, When in mode A it should be at least 2 seconds interval between

two reads. In mode B, each time SCK pin level changed, TX cycle will reset and TX after 60s.After

power up and set mode, A mode will directly enter sleep, B mode will enter low power consumption

mode after once TX.

A mode

Communication Step

1. Master output the falling edge signal keep this low level for 500ms to 5 seconds on SCK PIN.

2. Master output one dummy clock which high level pulse width will over 1ms.

3. Master output the clock in its fix rate to get each bit data.

4. When SCK at high, the SDA data is stable. The clock rate is from 5k to 100kbps.

5. Data is 4 bytes, 3 bytes data, and 1 byte CRC checksum.

6. Each byte is the MSB first out.

A mode Timing

Dummy high

Sleep

mode

>1ms

END

SCK

500ms<T<5S

get data

Set_SCK

//Before enter sleep mode