TMP112 restart

Hamza Hammami

Other Parts Discussed in Thread: TMP112

I have a question about how restart of TMP112 is made.

According to datasheet (7.3.2.6 General Call), we should proceed to a two-wire general-call address (0000 000) if the eighth bit is 0.

In a write transaction, we send first at all the write command with the slave address followed by the register address.

In case of a reset command, it's not clear where I should place "(0000 0000)", in the first byte or the second one?

over 10 years ago

0 Ren Schackmann over 10 years ago

TI__Mastermind 46625 points

An I2C transaction consists of:
Start
Address + R/W
ACK
Data
ACK
(Additional Data)
(Additional ACK)
Stop

In the case of General Call Reset, the Address+R/W equals 0x0 and the first data byte equals 0x6. Additional data is not needed.

For normal write commands to TMP112, Address+R/W is as normal, the first data byte sets the Register Pointer, and additional bytes may be supplied in order to write to the contents of the register selected by Register Pointer.

Ren

0 Hamza Hammami over 10 years ago in reply to Ren Schackmann

Prodigy 20 points

Hi Mr Schackmann,

Thank you for your quick response.

Sensors

Sensors forum

TMP112 restart