TH01 Datasheet, PDF (4/7 Pages) List of Unclassifed Manufacturers – Temperature and Humidity Module

TH01
Temperature and Humidity Module
2012-7-2
Version: 1.4
SCK pin is pull up with internal pull-up resistor.
SYN+CODE(data format)
RF
CODE
0
1
SYN
H/L(US)
488/488±20
488/1952±50
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
Sleep
mode
Dummy high
>1ms
END
SCK
500ms<T<5S
get data
Set_SCK
//Before enter sleep mode
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