TB(P) Series Specification

Non-contact Infrared Temperature Sensor

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1.0.0

Timing

The TB(P) meets all the timing specifications of the SMBus. The maximum frequency

of the TB(P) SMBus is 100KHz and the minimum is 10KHz.

The specific timings in TB(P)’s SMBus are:

Timeout L is the maximum allowed time for SCL to be low during communication.

After this time the TB(P) will reset its communication block and will be ready for new

communication – not more than 27ms;

Timeout H is the maximum allowed time for SCL to be high during communication.

After this time TB(P) will reset its communication block assuming that the bus is idle

(according to the SMBus specification) – not more than 45μs.

Tsuac(SD) is the time after the eighth falling edge of SCL that TB(P) will force SDA

low to acknowledge the last received byte – not more than 2.5μs.

Thdac(SD) is the time after the ninth falling edge of SCL that TB(P) will release the

SDA (so the MD can continue with the communication) – not more than 1.5μs.

Tsuac(MD) is the time after the eighth falling edge of SCL that TB(P) will release

SDA (so that the MD can acknowledge the last received byte) – not more than 1.5μs.

Thdac(MD) is the time after the ninth falling edge of SCL that TB(P) will take control

of the SDA (so it can continue with the next byte to transmit) – not more than 1.5μs.

The indexes MD and SD for the latest timings are used – MD when the master device

is making acknowledge; SD when the slave device is making acknowledge.

SMBus timing

Bit transfer

Bit transfer on SMBus

The data on SDA must be changed when SCL is low (min 300ns after the falling edge

of SCL). The data is fetched by both MD and SDs on the rising edge of the SCL.

Products handling precaution

※ When it comes to dust removal by air, the best method is to use a blower, and

to avoid using compressed air.

※ Do not press the lens with your hands or any other object.

※ Do not scratch the lens surface with sharp objects.

※ Voluntary disassembly and modification of the product is prohibited.

※ Avoid direct sunlight, chemical substance, heat or fire.

※ Water resistance is not guaranteed.

Tutorial 1(Arduino UNO - TB(P)-I2C-H08)

- Requirements

Hardware: Arduino Uno, TB(P) series Sensor

Software: Arduino IDE.

- Connection Diagram

-

TB-I2C-H08

-

TBP-I2C-H08

- Sample code

https://www.diwellshop.com/web/en/TB/TB_example.zip

- Expected Results.